Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol

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However, the successful implementation of this technique necessitates meticulous planning concerning implant selection, materials, and prosthesis design. The recent introduction of PEEK (Polyetheretherketone) in dentistry, especially in all-on-four prosthetics, prompts questions regarding its clinical efficacy and comparative biomechanical and biological advantages over conventional materials such as titanium and zirconia. While some studies have compared PEEK with other materials, systematic reviews evaluating its efficacy are scarce. This systematic review protocol intends to assess the evidence regarding the viability of PEEK as a potential alternative within the all-on-four approach in dental implantology. Methods This systematic review protocol will adhere to the Cochrane Handbook for Systematic Review of Interventions and align with the Methodological Expectations of the Cochrane Intervention Reviews (MECIR) guidelines. Utilizing a comprehensive search strategy, multiple databases, including PubMed, EMBASE, Scopus, EBSCO, Web of Science, Cochrane Central, and registries of clinical trials, will be explored. The search aims to identify randomized controlled trials and non-randomized studies investigating the application of PEEK in the all-on-four approach for dental procedures. Emphasizing clinically relevant outcomes such as implant survival, prosthesis success, peri-implant complications, and patient satisfaction, this review aims to provide insights into the effectiveness and potential benefits of using PEEK in all-on-four prosthetics. Non-randomized studies will be assessed for bias using ROBINS-I, while randomized controlled trials will undergo evaluation with the Cochrane Risk of Bias assessment tool, ROB II. Discussion The outcomes derived from this systematic review hold great significance for dental practitioners exploring the all-on-four concept. Understanding PEEK’s advantages and limitations compared to titanium and zirconia facilitates tailored treatment plans, enhancing success and satisfaction, ultimately improving dental care quality. Systematic review registration PROSPERO: CRD42024531175 (Registered on 13/04/2024). " } { "@context": "http://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": "1", "item": { "@id": "https://f1000research.com/", "name": "Home" } }, { "@type": "ListItem", "position": "2", "item": { "@id": "https://f1000research.com/browse/articles", "name": "Browse" } }, { "@type": "ListItem", "position": "3", "item": { "@id": "https://f1000research.com/articles/13-507", "name": "Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis..." } } ] } Home Browse Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis... ALL Metrics - Views Downloads Get PDF Get XML Cite How to cite this article Boukhris H, Hajjami H and Ben youssef S. Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] . F1000Research 2025, 13 :507 ( https://doi.org/10.12688/f1000research.150799.2 ) NOTE: If applicable, it is important to ensure the information in square brackets after the title is included in all citations of this article. Close Copy Citation Details Export Export Citation Sciwheel EndNote Ref. Manager Bibtex ProCite Sente EXPORT Select a format first Track Share ▬ ✚ Study Protocol Revised Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] Hanen Boukhris https://orcid.org/0000-0001-7574-1872 1 , Hayet Hajjami 1 , Souha Ben youssef https://orcid.org/0000-0001-6568-9425 2 Hanen Boukhris https://orcid.org/0000-0001-7574-1872 1 , Hayet Hajjami 1 , Souha Ben youssef https://orcid.org/0000-0001-6568-9425 2 PUBLISHED 30 Jan 2025 Author details Author details 1 faculty of dental medicine-department of prosthodontics-LR12SP10, University of Monastir, Monastir, Monastir, 4000, Tunisia 2 Faculty of dental medicine, department of oral surgery, LR12SP10, University of Monastir, Monastir, Monastir, 4000, Tunisia Hanen Boukhris Roles: Conceptualization, Formal Analysis, Investigation, Methodology, Project Administration, Resources, Supervision, Validation, Visualization, Writing – Original Draft Preparation, Writing – Review & Editing Hayet Hajjami Roles: Conceptualization, Data Curation, Investigation, Methodology, Project Administration, Supervision, Validation, Visualization, Writing – Original Draft Preparation, Writing – Review & Editing Souha Ben youssef Roles: Conceptualization, Supervision, Validation, Writing – Original Draft Preparation, Writing – Review & Editing OPEN PEER REVIEW DETAILS REVIEWER STATUS Abstract Background The “all-on-four” concept represents a significant advancement in dental implantology. particularly beneficial in cases of extensive jaw bone loss where invasive bone regeneration procedures are typically required. However, the successful implementation of this technique necessitates meticulous planning concerning implant selection, materials, and prosthesis design. The recent introduction of PEEK (Polyetheretherketone) in dentistry, especially in all-on-four prosthetics, prompts questions regarding its clinical efficacy and comparative biomechanical and biological advantages over conventional materials such as titanium and zirconia. While some studies have compared PEEK with other materials, systematic reviews evaluating its efficacy are scarce. This systematic review protocol intends to assess the evidence regarding the viability of PEEK as a potential alternative within the all-on-four approach in dental implantology. Methods This systematic review protocol will adhere to the Cochrane Handbook for Systematic Review of Interventions and align with the Methodological Expectations of the Cochrane Intervention Reviews (MECIR) guidelines. Utilizing a comprehensive search strategy, multiple databases, including PubMed, EMBASE, Scopus, EBSCO, Web of Science, Cochrane Central, and registries of clinical trials, will be explored. The search aims to identify randomized controlled trials and non-randomized studies investigating the application of PEEK in the all-on-four approach for dental procedures. Emphasizing clinically relevant outcomes such as implant survival, prosthesis success, peri-implant complications, and patient satisfaction, this review aims to provide insights into the effectiveness and potential benefits of using PEEK in all-on-four prosthetics. Non-randomized studies will be assessed for bias using ROBINS-I, while randomized controlled trials will undergo evaluation with the Cochrane Risk of Bias assessment tool, ROB II. Discussion The outcomes derived from this systematic review hold great significance for dental practitioners exploring the all-on-four concept. Understanding PEEK’s advantages and limitations compared to titanium and zirconia facilitates tailored treatment plans, enhancing success and satisfaction, ultimately improving dental care quality. Systematic review registration PROSPERO: CRD42024531175 (Registered on 13/04/2024). READ ALL READ LESS Keywords All-on-four, PEEK (Polyetheretherketone), Full-arch implant, Systematic review, Dental materials, Success rates, Complications, Clinical outcomes Corresponding Author(s) Hanen Boukhris ( [email protected] ) Close Corresponding author: Hanen Boukhris Competing interests: No competing interests were disclosed. Grant information: The author(s) declared that no grants were involved in supporting this work. Copyright: © 2025 Boukhris H et al . This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. How to cite: Boukhris H, Hajjami H and Ben youssef S. Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] . F1000Research 2025, 13 :507 ( https://doi.org/10.12688/f1000research.150799.2 ) First published: 17 May 2024, 13 :507 ( https://doi.org/10.12688/f1000research.150799.1 ) Latest published: 30 Jan 2025, 13 :507 ( https://doi.org/10.12688/f1000research.150799.2 ) Revised Amendments from Version 1 This updated version of the article includes several significant improvements and clarifications: Eligibility Criteria Refinement: The distinction between "success" and "survival" has been explicitly defined. Success is now based on specific criteria such as implant stability, peri-implant soft tissue health, prosthetic function, and patient satisfaction, while survival focuses on the physical retention of the implant. Additionally, the exclusion of in vitro and animal studies has been explicitly stated to ensure the focus remains on clinical outcomes. Search Strategy Enhancements: The methods used to assess parameters, including keyword selection and search string development, are clearly outlined. The strategy now integrates a comprehensive exploration of unpublished literature and grey literature through conference proceedings, dissertations, and clinical trial registries, guided by an advisory board. Methodological Precision: Efforts have been made to define and explicitly state all methods to enhance transparency and reproducibility, including the measures of effect (e.g., risk ratio, odds ratio, and number needed to treat) for success rates. Addressing Reviewer Feedback: Modifications were made in direct response to peer review comments, emphasizing clarity and methodological rigor in defining all parameters and outcomes. These changes aim to improve the clarity, transparency, and comprehensiveness of the systematic review protocol, ensuring a thorough and unbiased exploration of the research question. This updated version of the article includes several significant improvements and clarifications: Eligibility Criteria Refinement: The distinction between "success" and "survival" has been explicitly defined. Success is now based on specific criteria such as implant stability, peri-implant soft tissue health, prosthetic function, and patient satisfaction, while survival focuses on the physical retention of the implant. Additionally, the exclusion of in vitro and animal studies has been explicitly stated to ensure the focus remains on clinical outcomes. Search Strategy Enhancements: The methods used to assess parameters, including keyword selection and search string development, are clearly outlined. The strategy now integrates a comprehensive exploration of unpublished literature and grey literature through conference proceedings, dissertations, and clinical trial registries, guided by an advisory board. Methodological Precision: Efforts have been made to define and explicitly state all methods to enhance transparency and reproducibility, including the measures of effect (e.g., risk ratio, odds ratio, and number needed to treat) for success rates. Addressing Reviewer Feedback: Modifications were made in direct response to peer review comments, emphasizing clarity and methodological rigor in defining all parameters and outcomes. These changes aim to improve the clarity, transparency, and comprehensiveness of the systematic review protocol, ensuring a thorough and unbiased exploration of the research question. See the authors' detailed response to the review by Marwa Emam READ REVIEWER RESPONSES Introduction In the field of clinical dentistry, the integration of computer-aided design and computer-aided manufacturing (CAD/CAM) methods marks a transformative advancement in restorative practices. Leading this evolution are techniques such as digital light processing and stereolithography. 1 – 3 Despite rapid technological advancements propelled by patent expirations and widespread acceptance in dentistry, their adoption in clinical practice hinges primarily on the availability of suitable materials. These materials must ensure precise fabrication and possess requisite biological and physical properties. 3 Polymeric materials, notably ultra-high-performance variants like PEEK, have garnered attention for their outstanding mechanical properties. PEEK, established in medical applications since the 1990s, has demonstrated success in various procedures, such as spinal fusions and orthopedic surgery. 4 – 6 The potential utilization of these materials in dental prostheses and implants, including the “all-on-four concept,” has attracted considerable interest from both researchers and clinicians. 7 , 8 The “all-on-four concept” offers a simplified approach to rehabilitation, introduced in the early 2000s to provide a fixed, comfortable solution for fully edentulous patients with atrophic jaws, while avoiding costly and complex regenerative procedures. 9 , 10 Initially, prostheses were constructed using fused metallic frameworks or milled bars, with titanium or cast metal alloy frameworks favored for their mechanical properties. 11 – 13 Recent suggestions to incorporate polymers into all-on-four prostheses aim to enhance patient satisfaction and confidence, addressing challenges associated with prosthesis fractures and failures. 14 , 15 Therefore, this proposed systematic review seeks to gather data on the clinical performance of PEEK as a restorative material for all-on-four prostheses, in comparison to alternative materials such as titanium and zirconia. This survey is crucial for dentists. It provides essential data for making informed decisions regarding the utilization of PEEK in the all-on-four concept. Protocol Methods/design The systematic review will follow the Preferred Reporting Items for Systematic Review and Meta-analysis Protocols (PRISMA-P) checklist. 16 – 18 It will also adhere to guidelines outlined in the Methodological Expectations of Cochrane Intervention Reviews and Cochrane Handbook for Systematic Review of Interventions. 19 , 20 The protocol has been officially recorded in the International Prospective Register of Systematic Reviews (PROSPERO) under registration number CRD42024531175 on 13/04/2024. Objectives Primary objectives: • To evaluate the efficacy of PEEK (Polyetheretherketone) in the all-on-four concept, comparing it to conventional materials like titanium zirconia, and base metals. • To examine related clinical outcomes, including implant survival rates, prosthesis success, patient satisfaction levels, and incidences of peri-implant complications and aesthetic success evaluated through validated clinical metrics. These include gingival harmony, shade matching, overall prosthetic appearance, and patient-reported satisfaction with esthetics. Secondary objectives: • Identify any potential advantages or limitations of using PEEK in all-on-four prosthetics compared to traditional materials. • Provide evidence-based recommendations for clinicians regarding the selection of materials for all-on-four procedures. • Identify any gaps in the existing literature and suggest potential directions for future research. Eligibility criteria The eligibility criteria are organized based on the PICOS framework (Participant-Intervention-Comparison-Outcome-Study Design). This framework aims to identify the key components of the research question. The research question for this systematic review is: Does the choice of prosthetic material, especially PEEK (Polyetheretherketone), impact success rates in all-on-four dental implant concept compared to titanium and zirconia? ✓ Types of participants: This systematic review will focus on patients who have received all-on-four implant-supported fixed prostheses. Eligible participants must not have medical conditions that could affect bone healing or metabolism, such as diabetes, hypertension, or cardiovascular diseases. However, smokers or those who have undergone chemotherapy or radiation therapy will be excluded due to potential impacts on bone healing. ✓ Types of interventions: This systematic review will center on the use of PEEK (Polyetheretherketone) as the prosthetic material in all-on-four concepts. The minimum follow-up period will be six months. The analysis will focus on evaluating the effectiveness of PEEK relative to conventional materials. ✓ Types of outcomes: The most important outcome will be the success rate of all-on-four prosthesis. Success will be assessed based on criteria including implant stability, peri-implant soft tissue health, prosthetic stability and function, patient satisfaction, and absence of major complications such as peri-implantitis. Survival rates, which reflect the continued existence of the implant or prosthesis regardless of complications, will be distinguished and reported separately from success rates. This distinction is critical to avoid conflating different metrics and ensure clarity and precision in reporting outcomes. These assessments will be conducted at various time points. ✓ Measures of effect: The main outcome (success rate) will be quantified using the risk ratio (relative risk) or odds ratio, depending on the available data in the included studies. These measures will evaluate the likelihood of success with PEEK prosthetic material compared to alternative materials in all-on-four rehabilitations. Additionally, risk differences and the number needed to treat may be calculated to provide further insights into the clinical significance of any differences observed in success rates between the two groups. ✓ Study types: This systematic review will involve randomized controlled trials as well as non-randomized controlled trials (non-RCTs). Additionally, observational studies, including cohort and case-control studies, will be considered if they adhere to at least 15 criteria from the STROBE quality guide. 21 – 23 Furthermore, comparative studies, such as quasi-experimental designs, will be included if they compare outcomes of all-on-four rehabilitation using PEEK prosthetic material with alternative materials. Exclusion criteria will involve individual case reports and letters to the editor due to limited generalizability, while non-English studies will be excluded to mitigate language bias and resource constraints. Additionally, animal studies and in vitro studies will not be considered, as outcomes cannot be effectively investigated through non-clinical models. Studies with insufficient outcome data will also be excluded to ensure the reliability of the review. Search strategy The improved search strategy will utilize both keywords and controlled vocabulary terms specific to the topic of interest, ensuring a thorough exploration of relevant literature. The methods used to assess all parameters, including keyword selection and search string development, will be clearly defined and explicitly stated in the review protocol. In addition to MEDLINE, other databases such as EMBASE, Scopus, EBSCO, Cochrane Central and Web of Science will be systematically searched to minimize the risk of missing relevant studies. To ensure inclusivity, efforts will be made to identify unpublished literature and ongoing clinical trials through sources such as conference proceedings, dissertations, and clinical trial registries. The advisory board will play a crucial role in guiding the identification of grey literature sources and analyzing their relevance to the review. Moreover, the search strategy will be complemented by manually searching through the bibliographies of included studies to identify additional articles that may not have been identified through electronic searches alone. This approach will help to minimize the risk of publication bias and ensure an exhaustive overview of the existing evidence. Study selection (screening process) After conducting a thorough search across all identified databases and removing duplicate papers, two reviewers will independently assess the titles and abstracts of potentially eligible articles. Articles meeting the initial eligibility criteria will undergo a full-text examination. Additionally, reviewers will carefully examine the bibliography of selected articles to identify further relevant studies. Papers meeting the selection criteria will proceed to the data extraction stage. Any differences between the reviewers during the selection phase will be addressed through discussion. If needed, an additional reviewer (SB) will be engaged to assist in reaching a consensus and maintaining the integrity of the selection process. The findings of the search and selection process will be meticulously documented and reported in the final systematic review, ensuring compliance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. 19 , 20 Assessment of methodological quality and risk of bias To ensure a thorough evaluation of bias within the included studies, two review authors (HB, HH) will independently conduct assessments using the revised Cochrane Risk of Bias Assessment Tool (ROBII) and the Newcastle-Ottawa Scale (NOS). 24 , 25 These established tools will facilitate our analysis of multiple aspects, including participant recruitment, classification of interventions, adherence to intended protocols, data completeness, outcome assessment, and reporting of results. Each identified risk will be categorized as low, high, serious, or moderate, allowing for a nuanced understanding of the quality of evidence. If there are any discrepancies between the review authors, they will be addressed through thorough comprehensive discussion or, if required, consultation with a third reviewer. Data extraction Two independent reviewers (HB, HH) will conduct data extraction using a template designed for this purpose, which has been carefully evaluated during a pilot phase. In the data extraction phase, any discrepancies will be addressed through discussion by the two reviewers as the initial step. If consensus cannot be achieved, (SB) will be consulted for further input. Final decisions will be made based on majority agreement. In instances where information or data is unpublished or missing, attempts will be made to contact the study authors to request the necessary details. If sufficient data are obtained, additional pertinent statistical analyses will be conducted. Data analysis and synthesis The analysis of results and data will involve descriptive statistics, such as mean and median, along with measures of dispersion. Frequencies and proportions will be calculated for all variables. The findings will be presented through both textual descriptions and tables, utilizing narrative synthesis. Subgroup analyses may be conducted if feasible, and sensitivity analyses will assess the robustness of findings. If considered suitable, a meta-analysis will be conducted utilizing random-effects models to combine data from studies with methodology and outcome homogeneity. To assess statistical heterogeneity, comprehensive tests like the Chi-squared, Tau-squared, and I-squared metrics will be used. Heterogeneity levels will be systematically categorized, from low to high or severe, to interpret observed variability. These findings will be illustrated through a forest plot, providing a clear visualization of combined study effects. In identifying potential sources of heterogeneity, thorough subgroup analyses will be conducted. These analyses will examine key characteristics impacting incidence or prevalence estimates. The aim is to enhance the objectivity of the findings by investigating these factors thoroughly. Moreover, to address potential publication bias, a funnel plot will be utilized, grouping studies in sets of ten for meta-analysis. The plot’s symmetry will then be carefully assessed using the Egger test to identify any bias in the included studies. Discussion The findings of this proposed systematic review hold importance for dentists specializing in dental implantology. They will play a critical role in enhancing patient care for the all-on-four concept. By consolidating existing evidence on PEEK’s use in all-on-four prosthetics, this review helps clinicians make informed decisions about material selection. Understanding both the potential benefits and limitations of PEEK compared to traditional materials like titanium and zirconia allows dentists to personalize treatment plans, enhancing success and satisfaction. Consequently, this review serves as a valuable resource for guiding clinical practice and elevating the quality of dental care provided. Ethics and dissemination No ethical approval is needed for this systematic survey. The authors intend to present the findings at target conferences and publish the research findings in a peer-reviewed journal adopting open science practices. Study status This systematic review is currently in the data analysis process. The protocol of this systematic review was submitted to PROSPERO registry on 13th April, 2024 (CRD42024531175). Data availability No data are associated with this article. Reporting guidelines Figshare: PRISMA-P checklist for Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review https://doi.org/10.6084/m9.figshare.25662519.v1 . 26 Data are available under the terms of the Creative Commons Attribution 4.0 International license (CC-BY 4.0). References 1. Arcila L, de Carvalho Ramos N , Bottino M, et al. : Indications, materials and properties of 3D printing in dentistry: a literature overview. ResSocDev. 2020; 9 (11). Publisher Full Text 2. Revilla-León M, Sadeghpour M, Özcan M: An update on applications of 3D printing technologies used for processing polymers used in implant dentistry. Odontology. 2020; 108 (03): 331–338. PubMed Abstract | Publisher Full Text 3. Kessler A, Hickel R, Reymus M: 3D printing in dentistry-state of the art. Oper. Dent. 2020; 45 (01): 30–40. Publisher Full Text 4. 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Publisher Full Text Comments on this article Comments (0) Version 2 VERSION 2 PUBLISHED 17 May 2024 ADD YOUR COMMENT Comment Author details Author details 1 faculty of dental medicine-department of prosthodontics-LR12SP10, University of Monastir, Monastir, Monastir, 4000, Tunisia 2 Faculty of dental medicine, department of oral surgery, LR12SP10, University of Monastir, Monastir, Monastir, 4000, Tunisia Hanen Boukhris Roles: Conceptualization, Formal Analysis, Investigation, Methodology, Project Administration, Resources, Supervision, Validation, Visualization, Writing – Original Draft Preparation, Writing – Review & Editing Hayet Hajjami Roles: Conceptualization, Data Curation, Investigation, Methodology, Project Administration, Supervision, Validation, Visualization, Writing – Original Draft Preparation, Writing – Review & Editing Souha Ben youssef Roles: Conceptualization, Supervision, Validation, Writing – Original Draft Preparation, Writing – Review & Editing Competing interests No competing interests were disclosed. Grant information The author(s) declared that no grants were involved in supporting this work. Article Versions (2) version 2 Revised Published: 30 Jan 2025, 13:507 https://doi.org/10.12688/f1000research.150799.2 version 1 Published: 17 May 2024, 13:507 https://doi.org/10.12688/f1000research.150799.1 Copyright © 2025 Boukhris H et al . This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Download Export To Sciwheel Bibtex EndNote ProCite Ref. Manager (RIS) Sente metrics Views Downloads F1000Research - - PubMed Central info_outline Data from PMC are received and updated monthly. - - Citations open_in_new 0 open_in_new 0 open_in_new SEE MORE DETAILS CITE how to cite this article Boukhris H, Hajjami H and Ben youssef S. Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] . F1000Research 2025, 13 :507 ( https://doi.org/10.12688/f1000research.150799.2 ) NOTE: If applicable, it is important to ensure the information in square brackets after the title is included in all citations of this article. COPY CITATION DETAILS track receive updates on this article Track an article to receive email alerts on any updates to this article. TRACK THIS ARTICLE Share Open Peer Review Current Reviewer Status: ? Key to Reviewer Statuses VIEW HIDE Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions Version 1 VERSION 1 PUBLISHED 17 May 2024 Views 0 Cite How to cite this report: Emam M. Reviewer Report For: Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] . F1000Research 2025, 13 :507 ( https://doi.org/10.5256/f1000research.165398.r350243 ) The direct URL for this report is: https://f1000research.com/articles/13-507/v1#referee-response-350243 NOTE: it is important to ensure the information in square brackets after the title is included in this citation. Close Copy Citation Details Reviewer Report 17 Jan 2025 Marwa Emam , Fixed Prosthodontics, Ain Shams University, Cairo, Egypt Approved with Reservations VIEWS 0 https://doi.org/10.5256/f1000research.165398.r350243 The report contains minor issues regarding the clarity of its English language. Editing is required to improve the flow and enhance the understandability of the sentences. Introduction Section: It is unclear whether only ... Continue reading READ ALL The report contains minor issues regarding the clarity of its English language. Editing is required to improve the flow and enhance the understandability of the sentences. Introduction Section: It is unclear whether only in vivo studies will be included, as outcomes cannot be effectively investigated through in vitro studies. The first sentences of the introduction should focus on implant dentistry or the available dental materials for CAD/CAM manufacturing, rather than 3D printing manufacturing. There is no need to mention PEKK since it will not be included in the review. Additionally, abbreviations should only be used after the full term has been introduced. A brief mention of the material’s composition and its related properties should be included here. PMMA is primarily a provisional material, so comparing it with PEEK is somewhat inappropriate. Instead, titanium and Co-Cr should be highlighted as they are considered the gold standard. Mention the advantages zirconia and PEEK bring to clinical outcomes. Objectives (Primary Objectives): Have you considered including base metals? How will each outcome be measured, and will aesthetic success be evaluated? Eligibility Criteria: There is a significant difference between “success” and “survival.” The report should specify the measured outcomes, and the terms should not be used interchangeably. Measures of Effect: The methods used to assess all parameters should be clearly defined and explicitly stated. Is the rationale for, and objectives of, the study clearly described? Partly Is the study design appropriate for the research question? Partly Are sufficient details of the methods provided to allow replication by others? Yes Are the datasets clearly presented in a useable and accessible format? Yes Competing Interests: No competing interests were disclosed. Reviewer Expertise: Fixed prosthodontics, dental materials, digital dentistry, implant biomechanics. I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above. Close READ LESS CITE CITE HOW TO CITE THIS REPORT Emam M. Reviewer Report For: Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] . F1000Research 2025, 13 :507 ( https://doi.org/10.5256/f1000research.165398.r350243 ) The direct URL for this report is: https://f1000research.com/articles/13-507/v1#referee-response-350243 NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article. COPY CITATION DETAILS Report a concern Author Response 23 Jan 2025 Hanen Boukhris , faculty of dental medicine-department of prosthodontics-LR12SP10, University of Monastir, Monastir, 4000, Tunisia 23 Jan 2025 Author Response Dear Reviewer, Thank you for your valuable feedback on our systematic review protocol. We appreciate your careful consideration of the manuscript and your insightful comments, which will help improve the ... Continue reading Dear Reviewer, Thank you for your valuable feedback on our systematic review protocol. We appreciate your careful consideration of the manuscript and your insightful comments, which will help improve the clarity and precision of the report. Below, we address each of your reservations: Clarity of English Language: We recognize the importance of clear and concise language in scientific writing. We will thoroughly revise the manuscript to improve the flow and readability, ensuring that sentences are more straightforward and easier to follow. A native English speaker will assist with the final editing to enhance the language quality further. Introduction Section: In vivo vs. In vitro studies: We understand the need for clarification regarding the inclusion criteria for in vivo studies. We will revise the introduction to explicitly state that only in vivo studies will be included in the review, as outcomes cannot be effectively evaluated through in vitro studies. Focus on Implant Dentistry: We acknowledge that the introduction should primarily focus on implant dentistry rather than 3D printing manufacturing. The first sentences will be rephrased to center on available dental materials for CAD/CAM manufacturing, as this aligns better with the focus of the review. PEKK Mention: We will remove the mention of PEKK from the introduction as it will not be part of the review, streamlining the discussion. Material Composition and Properties: We agree with your suggestion to include a brief mention of PEEK's composition and its relevant properties in the introduction. This information will be incorporated to provide a better context for readers. Comparison of PMMA with PEEK: We acknowledge that PMMA is primarily a provisional material, and comparing it with PEEK may not be entirely appropriate. In light of this, we will revise the text to focus more on titanium and Co-Cr alloys as the gold standard materials for all-on-four prosthetics. Additionally, we will highlight the clinical advantages that zirconia and PEEK bring to the outcomes of such treatments. Objectives (Primary Objectives): Inclusion of Base Metals: We will consider incorporating base metals into the review, as their inclusion may provide a more comprehensive comparison. This will be reflected in the revised primary objectives. Outcome Measures and Aesthetic Success: We will provide clearer details on how each outcome will be measured, including the evaluation of aesthetic success, which is crucial for patient satisfaction and clinical outcomes. Eligibility Criteria: Clarification of "Success" vs. "Survival": We will ensure that the terms "success" and "survival" are clearly defined and not used interchangeably. The manuscript will specify how each outcome is measured, distinguishing between these two concepts. Measures of Effect: We will revise the manuscript to clearly define the methods used to assess each outcome, including the rationale behind the selection of these measures. The objectives of the study will be more explicitly stated to ensure clarity. Study Design Appropriateness: We will revisit the study design section and provide a more thorough explanation of why the chosen design is appropriate for addressing the research question, ensuring that all methodological details align with the objectives of the review. We believe that these revisions will strengthen the manuscript and enhance its clarity and precision. Once again, we appreciate your constructive feedback, and we are confident that the revised version will meet your expectations. Sincerely, Dear Reviewer, Thank you for your valuable feedback on our systematic review protocol. We appreciate your careful consideration of the manuscript and your insightful comments, which will help improve the clarity and precision of the report. Below, we address each of your reservations: Clarity of English Language: We recognize the importance of clear and concise language in scientific writing. We will thoroughly revise the manuscript to improve the flow and readability, ensuring that sentences are more straightforward and easier to follow. A native English speaker will assist with the final editing to enhance the language quality further. Introduction Section: In vivo vs. In vitro studies: We understand the need for clarification regarding the inclusion criteria for in vivo studies. We will revise the introduction to explicitly state that only in vivo studies will be included in the review, as outcomes cannot be effectively evaluated through in vitro studies. Focus on Implant Dentistry: We acknowledge that the introduction should primarily focus on implant dentistry rather than 3D printing manufacturing. The first sentences will be rephrased to center on available dental materials for CAD/CAM manufacturing, as this aligns better with the focus of the review. PEKK Mention: We will remove the mention of PEKK from the introduction as it will not be part of the review, streamlining the discussion. Material Composition and Properties: We agree with your suggestion to include a brief mention of PEEK's composition and its relevant properties in the introduction. This information will be incorporated to provide a better context for readers. Comparison of PMMA with PEEK: We acknowledge that PMMA is primarily a provisional material, and comparing it with PEEK may not be entirely appropriate. In light of this, we will revise the text to focus more on titanium and Co-Cr alloys as the gold standard materials for all-on-four prosthetics. Additionally, we will highlight the clinical advantages that zirconia and PEEK bring to the outcomes of such treatments. Objectives (Primary Objectives): Inclusion of Base Metals: We will consider incorporating base metals into the review, as their inclusion may provide a more comprehensive comparison. This will be reflected in the revised primary objectives. Outcome Measures and Aesthetic Success: We will provide clearer details on how each outcome will be measured, including the evaluation of aesthetic success, which is crucial for patient satisfaction and clinical outcomes. Eligibility Criteria: Clarification of "Success" vs. "Survival": We will ensure that the terms "success" and "survival" are clearly defined and not used interchangeably. The manuscript will specify how each outcome is measured, distinguishing between these two concepts. Measures of Effect: We will revise the manuscript to clearly define the methods used to assess each outcome, including the rationale behind the selection of these measures. The objectives of the study will be more explicitly stated to ensure clarity. Study Design Appropriateness: We will revisit the study design section and provide a more thorough explanation of why the chosen design is appropriate for addressing the research question, ensuring that all methodological details align with the objectives of the review. We believe that these revisions will strengthen the manuscript and enhance its clarity and precision. Once again, we appreciate your constructive feedback, and we are confident that the revised version will meet your expectations. Sincerely, Competing Interests: none Close Report a concern Respond or Comment COMMENTS ON THIS REPORT Author Response 23 Jan 2025 Hanen Boukhris , faculty of dental medicine-department of prosthodontics-LR12SP10, University of Monastir, Monastir, 4000, Tunisia 23 Jan 2025 Author Response Dear Reviewer, Thank you for your valuable feedback on our systematic review protocol. We appreciate your careful consideration of the manuscript and your insightful comments, which will help improve the ... Continue reading Dear Reviewer, Thank you for your valuable feedback on our systematic review protocol. We appreciate your careful consideration of the manuscript and your insightful comments, which will help improve the clarity and precision of the report. Below, we address each of your reservations: Clarity of English Language: We recognize the importance of clear and concise language in scientific writing. We will thoroughly revise the manuscript to improve the flow and readability, ensuring that sentences are more straightforward and easier to follow. A native English speaker will assist with the final editing to enhance the language quality further. Introduction Section: In vivo vs. In vitro studies: We understand the need for clarification regarding the inclusion criteria for in vivo studies. We will revise the introduction to explicitly state that only in vivo studies will be included in the review, as outcomes cannot be effectively evaluated through in vitro studies. Focus on Implant Dentistry: We acknowledge that the introduction should primarily focus on implant dentistry rather than 3D printing manufacturing. The first sentences will be rephrased to center on available dental materials for CAD/CAM manufacturing, as this aligns better with the focus of the review. PEKK Mention: We will remove the mention of PEKK from the introduction as it will not be part of the review, streamlining the discussion. Material Composition and Properties: We agree with your suggestion to include a brief mention of PEEK's composition and its relevant properties in the introduction. This information will be incorporated to provide a better context for readers. Comparison of PMMA with PEEK: We acknowledge that PMMA is primarily a provisional material, and comparing it with PEEK may not be entirely appropriate. In light of this, we will revise the text to focus more on titanium and Co-Cr alloys as the gold standard materials for all-on-four prosthetics. Additionally, we will highlight the clinical advantages that zirconia and PEEK bring to the outcomes of such treatments. Objectives (Primary Objectives): Inclusion of Base Metals: We will consider incorporating base metals into the review, as their inclusion may provide a more comprehensive comparison. This will be reflected in the revised primary objectives. Outcome Measures and Aesthetic Success: We will provide clearer details on how each outcome will be measured, including the evaluation of aesthetic success, which is crucial for patient satisfaction and clinical outcomes. Eligibility Criteria: Clarification of "Success" vs. "Survival": We will ensure that the terms "success" and "survival" are clearly defined and not used interchangeably. The manuscript will specify how each outcome is measured, distinguishing between these two concepts. Measures of Effect: We will revise the manuscript to clearly define the methods used to assess each outcome, including the rationale behind the selection of these measures. The objectives of the study will be more explicitly stated to ensure clarity. Study Design Appropriateness: We will revisit the study design section and provide a more thorough explanation of why the chosen design is appropriate for addressing the research question, ensuring that all methodological details align with the objectives of the review. We believe that these revisions will strengthen the manuscript and enhance its clarity and precision. Once again, we appreciate your constructive feedback, and we are confident that the revised version will meet your expectations. Sincerely, Dear Reviewer, Thank you for your valuable feedback on our systematic review protocol. We appreciate your careful consideration of the manuscript and your insightful comments, which will help improve the clarity and precision of the report. Below, we address each of your reservations: Clarity of English Language: We recognize the importance of clear and concise language in scientific writing. We will thoroughly revise the manuscript to improve the flow and readability, ensuring that sentences are more straightforward and easier to follow. A native English speaker will assist with the final editing to enhance the language quality further. Introduction Section: In vivo vs. In vitro studies: We understand the need for clarification regarding the inclusion criteria for in vivo studies. We will revise the introduction to explicitly state that only in vivo studies will be included in the review, as outcomes cannot be effectively evaluated through in vitro studies. Focus on Implant Dentistry: We acknowledge that the introduction should primarily focus on implant dentistry rather than 3D printing manufacturing. The first sentences will be rephrased to center on available dental materials for CAD/CAM manufacturing, as this aligns better with the focus of the review. PEKK Mention: We will remove the mention of PEKK from the introduction as it will not be part of the review, streamlining the discussion. Material Composition and Properties: We agree with your suggestion to include a brief mention of PEEK's composition and its relevant properties in the introduction. This information will be incorporated to provide a better context for readers. Comparison of PMMA with PEEK: We acknowledge that PMMA is primarily a provisional material, and comparing it with PEEK may not be entirely appropriate. In light of this, we will revise the text to focus more on titanium and Co-Cr alloys as the gold standard materials for all-on-four prosthetics. Additionally, we will highlight the clinical advantages that zirconia and PEEK bring to the outcomes of such treatments. Objectives (Primary Objectives): Inclusion of Base Metals: We will consider incorporating base metals into the review, as their inclusion may provide a more comprehensive comparison. This will be reflected in the revised primary objectives. Outcome Measures and Aesthetic Success: We will provide clearer details on how each outcome will be measured, including the evaluation of aesthetic success, which is crucial for patient satisfaction and clinical outcomes. Eligibility Criteria: Clarification of "Success" vs. "Survival": We will ensure that the terms "success" and "survival" are clearly defined and not used interchangeably. The manuscript will specify how each outcome is measured, distinguishing between these two concepts. Measures of Effect: We will revise the manuscript to clearly define the methods used to assess each outcome, including the rationale behind the selection of these measures. The objectives of the study will be more explicitly stated to ensure clarity. Study Design Appropriateness: We will revisit the study design section and provide a more thorough explanation of why the chosen design is appropriate for addressing the research question, ensuring that all methodological details align with the objectives of the review. We believe that these revisions will strengthen the manuscript and enhance its clarity and precision. Once again, we appreciate your constructive feedback, and we are confident that the revised version will meet your expectations. Sincerely, Competing Interests: none Close Report a concern COMMENT ON THIS REPORT Views 0 Cite How to cite this report: Muhsin S. Reviewer Report For: Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] . F1000Research 2025, 13 :507 ( https://doi.org/10.5256/f1000research.165398.r300937 ) The direct URL for this report is: https://f1000research.com/articles/13-507/v1#referee-response-300937 NOTE: it is important to ensure the information in square brackets after the title is included in this citation. Close Copy Citation Details Reviewer Report 04 Oct 2024 Saja Muhsin , Middle Technical University, Baghdad, Baghdad Governorate, Iraq Approved VIEWS 0 https://doi.org/10.5256/f1000research.165398.r300937 Summary; Two independent reviewers will use the Cochrane Risk of Bias Tool and the Newcastle-Ottawa Scale to assess studies, addressing discrepancies through discussion or a third reviewer to ensure a comprehensive evaluation of bias. Data extraction will be performed independently, ... Continue reading READ ALL Summary; Two independent reviewers will use the Cochrane Risk of Bias Tool and the Newcastle-Ottawa Scale to assess studies, addressing discrepancies through discussion or a third reviewer to ensure a comprehensive evaluation of bias. Data extraction will be performed independently, with differences resolved similarly. Descriptive statistics and narrative synthesis will summarize findings, with subgroup and sensitivity analyses enhancing robustness. If feasible, a random-effects meta-analysis will be conducted, using Chi-squared, Tau-squared, and I-squared tests to assess heterogeneity. Funnel plots and the Egger test will evaluate publication bias, aiming for objective and reliable results. To ensure the article is scientifically sound, the authors should focus on the following specific points: 1. Bias Assessment Tools: Justify the choice of the Cochrane Risk of Bias Tool (ROBII) and the Newcastle-Ottawa Scale (NOS) for assessing bias. Explain how these tools complement each other and their relevance to the study design. 2. Discrepancy Resolution: Provide detailed procedures for resolving discrepancies between reviewers. Specify criteria for involving a third reviewer and how to achieve consensus to enhance transparency. 3. Data Extraction Template: Include a comprehensive description of the data extraction template and the pilot phase evaluation. This ensures the template's effectiveness and reliability in capturing relevant data. 4. Unpublished/Missing Data: Outline the specific steps and methods for contacting study authors to obtain unpublished or missing data. Clarify how these data will be integrated into the analysis and the impact on overall findings. 5. Statistical Analyses: Elaborate on the statistical methods, including how descriptive statistics, frequencies, and proportions will be calculated. Provide clear definitions and justifications for the measures of dispersion used. 6. Subgroup and Sensitivity Analyses: Detail the criteria for conducting subgroup analyses and the factors considered in sensitivity analyses. Explain how these analyses will contribute to understanding the robustness and generalizability of the findings. 7. Meta-Analysis Criteria: Specify the criteria for including studies in the meta-analysis, particularly the definitions of methodological and outcome homogeneity. Justify the use of random-effects models and provide a rationale for the selected tests (Chi-squared, Tau-squared, and I-squared) to assess heterogeneity. 8. Heterogeneity Categorization: Clearly define the categories of heterogeneity (low, high, severe) and explain the thresholds or criteria used to classify them. This aids in interpreting the variability among included studies. 9. Publication Bias: Provide a detailed methodology for creating and interpreting the funnel plot and using the Egger test. Explain the rationale for grouping studies in sets of ten and how symmetry will be assessed to identify publication bias. 10. Visualization of Results: Ensure that the forest plot and any other visualizations are clearly described and justified. Explain how these visual tools will aid in the interpretation and presentation of the combined study effects. By addressing these points, the authors can strengthen the methodological rigour and scientific validity of their study, making it more robust and reliable. Is the rationale for, and objectives of, the study clearly described? Yes Is the study design appropriate for the research question? Yes Are sufficient details of the methods provided to allow replication by others? Yes Are the datasets clearly presented in a useable and accessible format? Yes References 1. Stogiannis D, Siannis F, Androulakis E: Heterogeneity in meta-analysis: a comprehensive overview. Int J Biostat . 2024; 20 (1): 169-199 PubMed Abstract | Publisher Full Text Competing Interests: No competing interests were disclosed. Reviewer Expertise: Dental Material Sciences, Prosthodontics, Research Methodoldy (Dental field) I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard. Close READ LESS CITE CITE HOW TO CITE THIS REPORT Muhsin S. Reviewer Report For: Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] . F1000Research 2025, 13 :507 ( https://doi.org/10.5256/f1000research.165398.r300937 ) The direct URL for this report is: https://f1000research.com/articles/13-507/v1#referee-response-300937 NOTE: it is important to ensure the information in square brackets after the title is included in all citations of this article. COPY CITATION DETAILS Report a concern Respond or Comment COMMENT ON THIS REPORT Comments on this article Comments (0) Version 2 VERSION 2 PUBLISHED 17 May 2024 ADD YOUR COMMENT Comment keyboard_arrow_left keyboard_arrow_right Open Peer Review Reviewer Status info_outline Alongside their report, reviewers assign a status to the article: Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions Reviewer Reports Invited Reviewers 1 2 Version 2 (revision) 30 Jan 25 Version 1 17 May 24 read read Saja Muhsin , Middle Technical University, Baghdad, Iraq Marwa Emam , Ain Shams University, Cairo, Egypt Comments on this article All Comments (0) Add a comment Sign up for content alerts Sign Up You are now signed up to receive this alert Browse by related subjects keyboard_arrow_left Back to all reports Reviewer Report 0 Views copyright © 2025 Emam M. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 17 Jan 2025 | for Version 1 Marwa Emam , Fixed Prosthodontics, Ain Shams University, Cairo, Egypt 0 Views copyright © 2025 Emam M. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. format_quote Cite this report speaker_notes Responses (1) Approved With Reservations info_outline Alongside their report, reviewers assign a status to the article: Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions The report contains minor issues regarding the clarity of its English language. Editing is required to improve the flow and enhance the understandability of the sentences. Introduction Section: It is unclear whether only in vivo studies will be included, as outcomes cannot be effectively investigated through in vitro studies. The first sentences of the introduction should focus on implant dentistry or the available dental materials for CAD/CAM manufacturing, rather than 3D printing manufacturing. There is no need to mention PEKK since it will not be included in the review. Additionally, abbreviations should only be used after the full term has been introduced. A brief mention of the material’s composition and its related properties should be included here. PMMA is primarily a provisional material, so comparing it with PEEK is somewhat inappropriate. Instead, titanium and Co-Cr should be highlighted as they are considered the gold standard. Mention the advantages zirconia and PEEK bring to clinical outcomes. Objectives (Primary Objectives): Have you considered including base metals? How will each outcome be measured, and will aesthetic success be evaluated? Eligibility Criteria: There is a significant difference between “success” and “survival.” The report should specify the measured outcomes, and the terms should not be used interchangeably. Measures of Effect: The methods used to assess all parameters should be clearly defined and explicitly stated. Is the rationale for, and objectives of, the study clearly described? Partly Is the study design appropriate for the research question? Partly Are sufficient details of the methods provided to allow replication by others? Yes Are the datasets clearly presented in a useable and accessible format? Yes Competing Interests No competing interests were disclosed. Reviewer Expertise Fixed prosthodontics, dental materials, digital dentistry, implant biomechanics. I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard, however I have significant reservations, as outlined above. reply Respond to this report Responses (1) Author Response 23 Jan 2025 Hanen Boukhris, faculty of dental medicine-department of prosthodontics-LR12SP10, University of Monastir, Monastir, 4000, Tunisia Dear Reviewer, Thank you for your valuable feedback on our systematic review protocol. We appreciate your careful consideration of the manuscript and your insightful comments, which will help improve the clarity and precision of the report. Below, we address each of your reservations: Clarity of English Language: We recognize the importance of clear and concise language in scientific writing. We will thoroughly revise the manuscript to improve the flow and readability, ensuring that sentences are more straightforward and easier to follow. A native English speaker will assist with the final editing to enhance the language quality further. Introduction Section: In vivo vs. In vitro studies: We understand the need for clarification regarding the inclusion criteria for in vivo studies. We will revise the introduction to explicitly state that only in vivo studies will be included in the review, as outcomes cannot be effectively evaluated through in vitro studies. Focus on Implant Dentistry: We acknowledge that the introduction should primarily focus on implant dentistry rather than 3D printing manufacturing. The first sentences will be rephrased to center on available dental materials for CAD/CAM manufacturing, as this aligns better with the focus of the review. PEKK Mention: We will remove the mention of PEKK from the introduction as it will not be part of the review, streamlining the discussion. Material Composition and Properties: We agree with your suggestion to include a brief mention of PEEK's composition and its relevant properties in the introduction. This information will be incorporated to provide a better context for readers. Comparison of PMMA with PEEK: We acknowledge that PMMA is primarily a provisional material, and comparing it with PEEK may not be entirely appropriate. In light of this, we will revise the text to focus more on titanium and Co-Cr alloys as the gold standard materials for all-on-four prosthetics. Additionally, we will highlight the clinical advantages that zirconia and PEEK bring to the outcomes of such treatments. Objectives (Primary Objectives): Inclusion of Base Metals: We will consider incorporating base metals into the review, as their inclusion may provide a more comprehensive comparison. This will be reflected in the revised primary objectives. Outcome Measures and Aesthetic Success: We will provide clearer details on how each outcome will be measured, including the evaluation of aesthetic success, which is crucial for patient satisfaction and clinical outcomes. Eligibility Criteria: Clarification of "Success" vs. "Survival": We will ensure that the terms "success" and "survival" are clearly defined and not used interchangeably. The manuscript will specify how each outcome is measured, distinguishing between these two concepts. Measures of Effect: We will revise the manuscript to clearly define the methods used to assess each outcome, including the rationale behind the selection of these measures. The objectives of the study will be more explicitly stated to ensure clarity. Study Design Appropriateness: We will revisit the study design section and provide a more thorough explanation of why the chosen design is appropriate for addressing the research question, ensuring that all methodological details align with the objectives of the review. We believe that these revisions will strengthen the manuscript and enhance its clarity and precision. Once again, we appreciate your constructive feedback, and we are confident that the revised version will meet your expectations. Sincerely, View more View less Competing Interests none reply Respond Report a concern Emam M. Peer Review Report For: Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] . F1000Research 2025, 13 :507 ( https://doi.org/10.5256/f1000research.165398.r350243) NOTE: it is important to ensure the information in square brackets after the title is included in this citation. The direct URL for this report is: https://f1000research.com/articles/13-507/v1#referee-response-350243 keyboard_arrow_left Back to all reports Reviewer Report 0 Views copyright © 2024 Muhsin S. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 04 Oct 2024 | for Version 1 Saja Muhsin , Middle Technical University, Baghdad, Baghdad Governorate, Iraq 0 Views copyright © 2024 Muhsin S. This is an open access peer review report distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. format_quote Cite this report speaker_notes Responses (0) Approved info_outline Alongside their report, reviewers assign a status to the article: Approved The paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved Fundamental flaws in the paper seriously undermine the findings and conclusions Summary; Two independent reviewers will use the Cochrane Risk of Bias Tool and the Newcastle-Ottawa Scale to assess studies, addressing discrepancies through discussion or a third reviewer to ensure a comprehensive evaluation of bias. Data extraction will be performed independently, with differences resolved similarly. Descriptive statistics and narrative synthesis will summarize findings, with subgroup and sensitivity analyses enhancing robustness. If feasible, a random-effects meta-analysis will be conducted, using Chi-squared, Tau-squared, and I-squared tests to assess heterogeneity. Funnel plots and the Egger test will evaluate publication bias, aiming for objective and reliable results. To ensure the article is scientifically sound, the authors should focus on the following specific points: 1. Bias Assessment Tools: Justify the choice of the Cochrane Risk of Bias Tool (ROBII) and the Newcastle-Ottawa Scale (NOS) for assessing bias. Explain how these tools complement each other and their relevance to the study design. 2. Discrepancy Resolution: Provide detailed procedures for resolving discrepancies between reviewers. Specify criteria for involving a third reviewer and how to achieve consensus to enhance transparency. 3. Data Extraction Template: Include a comprehensive description of the data extraction template and the pilot phase evaluation. This ensures the template's effectiveness and reliability in capturing relevant data. 4. Unpublished/Missing Data: Outline the specific steps and methods for contacting study authors to obtain unpublished or missing data. Clarify how these data will be integrated into the analysis and the impact on overall findings. 5. Statistical Analyses: Elaborate on the statistical methods, including how descriptive statistics, frequencies, and proportions will be calculated. Provide clear definitions and justifications for the measures of dispersion used. 6. Subgroup and Sensitivity Analyses: Detail the criteria for conducting subgroup analyses and the factors considered in sensitivity analyses. Explain how these analyses will contribute to understanding the robustness and generalizability of the findings. 7. Meta-Analysis Criteria: Specify the criteria for including studies in the meta-analysis, particularly the definitions of methodological and outcome homogeneity. Justify the use of random-effects models and provide a rationale for the selected tests (Chi-squared, Tau-squared, and I-squared) to assess heterogeneity. 8. Heterogeneity Categorization: Clearly define the categories of heterogeneity (low, high, severe) and explain the thresholds or criteria used to classify them. This aids in interpreting the variability among included studies. 9. Publication Bias: Provide a detailed methodology for creating and interpreting the funnel plot and using the Egger test. Explain the rationale for grouping studies in sets of ten and how symmetry will be assessed to identify publication bias. 10. Visualization of Results: Ensure that the forest plot and any other visualizations are clearly described and justified. Explain how these visual tools will aid in the interpretation and presentation of the combined study effects. By addressing these points, the authors can strengthen the methodological rigour and scientific validity of their study, making it more robust and reliable. Is the rationale for, and objectives of, the study clearly described? Yes Is the study design appropriate for the research question? Yes Are sufficient details of the methods provided to allow replication by others? Yes Are the datasets clearly presented in a useable and accessible format? Yes References 1. Stogiannis D, Siannis F, Androulakis E: Heterogeneity in meta-analysis: a comprehensive overview. Int J Biostat . 2024; 20 (1): 169-199 PubMed Abstract | Publisher Full Text Competing Interests No competing interests were disclosed. Reviewer Expertise Dental Material Sciences, Prosthodontics, Research Methodoldy (Dental field) I confirm that I have read this submission and believe that I have an appropriate level of expertise to confirm that it is of an acceptable scientific standard. reply Respond to this report Responses (0) Muhsin S. Peer Review Report For: Clinical Outcomes of Polyetheretherketone (PEEK) Hybrid Prosthesis in All-on-Four Rehabilitation: A Systematic Review Protocol [version 2; peer review: 1 approved, 1 approved with reservations] . F1000Research 2025, 13 :507 ( https://doi.org/10.5256/f1000research.165398.r300937) NOTE: it is important to ensure the information in square brackets after the title is included in this citation. The direct URL for this report is: https://f1000research.com/articles/13-507/v1#referee-response-300937 Alongside their report, reviewers assign a status to the article: Approved - the paper is scientifically sound in its current form and only minor, if any, improvements are suggested Approved with reservations - A number of small changes, sometimes more significant revisions are required to address specific details and improve the papers academic merit. Not approved - fundamental flaws in the paper seriously undermine the findings and conclusions Adjust parameters to alter display View on desktop for interactive features Includes Interactive Elements View on desktop for interactive features Competing Interests Policy Provide sufficient details of any financial or non-financial competing interests to enable users to assess whether your comments might lead a reasonable person to question your impartiality. 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