Edentulism has significant functional and psychosocial consequences, and full-arch implant-supported fixed dental prostheses (FDPs) have become one of the most reliable rehabilitation options. However, long-term outcomes of prostheses due to prosthesis-related and patient-related risk factors remain limited. Thus, this study aimed to evaluate the long-term clinical performance, rates of complication types of full-arch implant-supported FDPs over a 4-10-year follow-up period. Additionally, the potential influence of patient- and prostheses- related risk factors—particularly bruxism, opposing arch type, retention system, and cantilever configuration—was assessed. This retrospective study included 24 patients (13 males, 11 females; aged 39–77) treated between 2015 and 2020 with complete or single-arch edentulism received full-arch implant-supported FDPs. A total of 180 implants were placed in 34 edentulous arches, 24 of the implants were angled in posterior regions. Eighteen arches were restored with cement-retained prostheses, and 16 with screw-retained prostheses. Standardized clinical and radiographic examinations were performed at follow-up visits to record periimplant conditions, marginal bone levels and prosthetic complications. Outcomes were documented descriptively at the prosthesis and patient levels. However, the cumulative prosthesis survival probability at 5 and 10 years were 80% and 60%, respectively. The cumulative success probability (complication-free) was 61.8% at 1 year, 26.5% at 3 years, and 14.7% at 5 years. By the 6th year, all prostheses (100%) had experienced at least one minor complication, with a median complication-free time of 3 years. “Probable” bruxism was significantly associated with chipping (p = 0.049) and a higher rate of minor complications in the mandible (p = 0.015). However, no significant correlation was found between cantilever length or prosthetic material and marginal bone loss (p > 0.05). Full-arch implant-supported FDPs demonstrated stable clinical performance over 4–10 years, with manageable technical complications. The present study contributes to the existing literature by providing long-term, single-center data with standardized follow-up and by presenting detailed implant-, prosthesis-, and patient-level complication profiles. Bruxism may increase the likelihood of certain technical complications, though further studies with larger samples are required to confirm. Not applicable.
Acar et al. (Sat,) studied this question.
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