Clinical Report of Six-Month Follow-Up After Cementing PEEK Crown On Molars

To investigate the therapeutic effect of polyetheretherketone (PEEK) crowns, a six-month clinical study on CAD/CAM-fabricated molar PEEK crowns was conducted. Twenty-three cases of PEEK crowns placed on the molars of 20 subjects (7 males and 13 females, mean age: 60.6 ± 14.4 years) were included in the study. The evaluation items were the condition of the crowns at the time of cementation and after six months, patient satisfaction, masticatory ability, and occlusal force. A Wilcoxon signed-rank test with a significance level of 5% was used to examine the difference in masticatory ability with and without PEEK crowns. The occlusion, margin fit, and contact of all 23 cases at the time of cementing was good. Six months after cementation, there was no crown desorption, no fracture or crack, and no prosthodontics was needed in the 22 cases where one patient dropped out. No wear of the dental antagonist was observed. Patient satisfaction was generally high. There was no significant difference in masticatory ability between the groups with and without PEEK crowns. The subject's occlusal force was within normal range. PEEK crowns on molars are highly therapeutic methods and can be fully used as a crown prosthetic material to replace metal.