Dimitrios Bardis, Doriana Agop-Forna, Cristina Dascălu, Ioana Cristea, Norina Forna
The study aimed to assess the biological and mechanical-technical complications rates of the 3-5 units posterior metal-ceramic implant-supported fixed partial dentures (FPD). Materials and method. The research was designed as a retrospective study on 67 edentulous patients (mean age 63,88 ± 11,70 yr) with implant-prosthetic treatment (mean follow-up 7,89-year). Biological complications (peri-implantitis) and mechanical/technical complications were assessed at implant, FPD and patient levels. Results. Implants survival rates were 96,6%. The rates of biological complications (peri-implantitis) were 13,5% at implant level (17,9% at patient level; 15,8% at FPD level). The rates of mechanical/technical complications were 28,7% at implant level (35,8% at patient level; 35,5% at FPD level); the most frequent were loss of screw access hole material (23,6%), followed by ceramic veneers fracture/chipping (11,8%), and screw loosening (8,4%). Conclusions. Despite of high survival rate (96,6%) of the implants supporting metal-ceramic FPD, 13,5% of implants had biological complications (peri-implantitis), and 28,7% of implants had at least one mechanical complication. Diagnostic of complications and additional intervention are requested in early stages to prevent the failure of the implant-prosthetic therapy.