Hawthan Mohammed Abdullah, Chrcanovic Bruno R, Larsson Christel
Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden.
Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, Faculty of Dentistry, Umm Al-Qura University, Makkah, Saudi Arabia.
J Prosthodont Res. 2023 Apr 12;67(2):238-245. doi: 10.2186/jpr.JPR_D_21_00222. Epub 2022 Aug 27.
To assess the influence of several factors on the survival of tooth-supported fixed partial dentures (FPDs) with vital and non-vital abutments.
The present retrospective cohort study was based on the records of patients treated with 3-to-7-unit tooth-supported FPDs with a minimum follow-up time of 6 months after prosthesis delivery. Cumulative survival rate (CSR) was calculated over the maximum follow-up period. Cox regression models were used to evaluate the association between the clinical covariates and prosthesis failure.
A total of 331 FPDs in 229 patients were included. The CSRs were 90.1% and 77.6% after 5 and 10 years and 67.9% and 52.1% after 15 and 20 years, respectively. Tooth-supported FPD failure was more prevalent within the first years of prosthesis delivery. Loss of one or more abutment teeth and loss of prosthesis retention were the main reasons for failure. Smoking and type of prosthesis material significantly influenced the survival of FPDs. Abutment vitality, position of the non-vital abutment, or prosthesis length did not show any significant influence on the occurrence of prosthesis failure.
Smoking and the type of prosthesis material are suggested to contribute to an increased rate of FPD failure irrespective of abutment vitality.
评估多种因素对具有活髓和无髓基牙的牙支持固定局部义齿（FPD）存留率的影响。
本回顾性队列研究基于接受3至7单位牙支持FPD治疗患者的记录，义齿交付后最短随访时间为6个月。在最长随访期内计算累积存留率（CSR）。采用Cox回归模型评估临床协变量与义齿失败之间的关联。
共纳入229例患者的331颗FPD。5年和10年后的CSR分别为90.1%和77.6%，15年和20年后分别为67.9%和52.1%。牙支持FPD失败在义齿交付后的最初几年更为普遍。一颗或多颗基牙缺失和义齿固位丧失是失败的主要原因。吸烟和义齿材料类型显著影响FPD的存留率。基牙活力、无髓基牙位置或义齿长度对义齿失败的发生没有任何显著影响。
无论基牙活力如何，吸烟和义齿材料类型均被认为会导致FPD失败率增加。
