BackgroundTooth‐ and implant‐supported fixed dental prostheses are well‐documented and aesthetic treatment alternatives, and after a comprehensive periodontal treatment, a protocol with a good long‐term prognosis if the maintenance program is strictly followed.AimTo reexamine a pre‐existing patient cohort in order to obtain estimated long‐term survival and complication outcomes of fixed dental prostheses.Materials and MethodsFor this study, patients treated with fixed dental prostheses between 1978 and 2002 were reexamined between 2019 and 2020. The restorations were divided in single crowns and fixed dental prostheses supported by teeth (TSC, FPTDP) and implants (ISC, FPIDP). Survival and complication rates were obtained. Kaplan–Meier functions were used to model complication probabilities, and average hazard ratios of different strata were compared using weighted Cox regression.ResultsThe mean observation time of 40 patients and 223 reconstructions was 20.3 (±9.7, 1.2–36.2) years. The estimated survival rates were 84% (CI: 77%–92%) for TSC, 63% (CI: 51%–79%) for FPTDP, 87% (CI: 71%–100%) for ISC, and 64% (CI: 34%–100%) for FPIDP after 25 years. Biological complications included carious lesions (10.6%), periodontitis (7.9%), and peri‐implantitis (6.8%). Technical complications included chipping (20.2%) and loss of retention (10.8%).ConclusionBiological complications lead to abutment loss in more than two‐thirds of cases, regardless of the type of abutment (tooth or implant). Technical complications are less associated with abutment loss than biological complications.

中文翻译：

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长达 36 年的观察期后牙齿和种植体支持修复体的生存率和并发症率


背景牙齿和种植体支撑的固定牙科修复体是有据可查的美学治疗替代方案，在全面的牙周治疗之后，如果严格遵循维护计划，则长期预后良好。目的重新检查预先存在的患者队列，以获得固定牙科修复体的估计长期生存和并发症结果。材料和方法在本研究中，对 1978 年至 2002 年间接受固定牙科修复体治疗的患者在 2019 年至 2020 年期间进行了复查。修复体分为单牙冠和由牙齿 （TSC、FPTDP） 和种植体 （ISC、FPIDP） 支撑的固定牙科修复体。获得生存率和并发症率。使用 Kaplan-Meier 函数对并发症概率进行建模，并使用加权 Cox 回归比较不同层的平均风险比。结果40 例患者和 223 例重建的平均观察时间为 20.3 （±9.7， 1.2–36.2） 年。25 年后，TSC 的估计生存率为 84% （CI： 77%–92%），FPTDP 为 63% （CI： 51%–79%），ISC 为 87% （CI： 71%–100%） 和 FPIDP 为 64% （CI： 34%–100%）。生物并发症包括龋齿病变 （10.6%） 、牙周炎 （7.9%） 和种植体周围炎 （6.8%）。技术并发症包括碎裂 （20.2%） 和保留缺失 （10.8%）。结论生物并发症导致超过 2/3 的病例发生基台丢失，无论基台类型（牙齿或种植体）如何。与生物学并发症相比，技术并发症与基台丢失的相关性较小。