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的修复体的存活率和并发症率


背景牙齿和种植体支持的固定假牙是有据可查的美容治疗替代方案，经过全面的牙周治疗后，如果严格遵循维护计划，则该方案具有良好的长期预后。目的重新检查预先存在的患者队列为了获得估计的固定假牙的长期生存率和并发症结果。材料和方法本研究对 1978 年至 2002 年接受固定假牙治疗的患者在 2019 年至 2020 年间进行了重新检查。修复体分为单冠和固定假牙由牙齿（TSC、FPTDP）和种植体​​（ISC、FPIDP）支撑的假体。获得了生存率和并发症率。使用Kaplan-Meier函数对并发症概率进行建模，并使用加权Cox回归比较不同层次的平均风险比。结果40名患者和223个重建的平均观察时间为20.3（±9.7，1.2-36.2）年。 TSC 的估计生存率为 84%（CI：77%–92%），FPTDP 为 63%（CI：51%–79%），ISC 为 87%（CI：71%–100%），ISC 为 64% (CI: 34%–100%) 25 年后 FPIDP。生物学并发症包括龋齿（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%) 和固位丧失 (10.8%)。 结论 无论基台类型（牙齿或种植体）如何，超过三分之二的病例都会因生物并发症导致基台丢失。与生物并发症相比，技术并发症与基台脱落的相关性较小。