Adjunctive therapies for the nonsurgical treatment of peri-implant diseases: systemic review and meta-analysis

Abstract Background Peri-implant diseases are mainly caused by biofilms around the implant and may lead to implant failure. Non-surgical mechanical debridement with different adjunctive therapies has being applied in the treatment of peri-implant diseases. This systematic review aims to figure out whether one adjunctive therapy is superior to any other. Methods Two independent authors screened the literature via the MEDLINE, Cochrane Library and Science Direct. Only clinical randomized controlled trials (RCTs) that compared the efficacy of adjunctive therapies in the treatment of peri-implant diseases with non-surgical mechanical debridement (MD) were included in this review. The studies selected were published before June 2020. Comparisons of clinical outcomes were estimated using meta-analysis Results: A total of eighteen RCTs met the inclusion criteria, of which 13 articles were included in the meta-analysis. The following adjunctive interventions were compared in the included studies: modifying the prosthesis; air abrasive; photodynamic therapy; local antibiotics; systemic antibiotics; probiotics. Statistically significant difference was observed between MD with photodynamic therapy and MD alone at 3 months follow-up ( P < 0.01). There is no statistical difference between MD with chlorhexidine and MD alone in the treatment of peri-implant diseases at 3 months follow-up ( P = 0.84), so is MD with probiotics and MD alone ( P = 0.96), and so is systemic antibiotics and MD alone ( P = 0.47). Conclusion. MD adjunct with PDT is an effective treatment for peri-implant mucositis. However, there is still no effective non-surgical treatment for peri-implantitis.