Associate Professor, Program Director, Department of Prosthodontics, Eastman Institute for Oral Health, University of Rochester, Rochester, N.Y.
Assistant Professor, University of Iceland, Reykjavik, Iceland.
J Prosthet Dent. 2020 Nov;124(5):539-546. doi: 10.1016/j.prosdent.2019.11.022. Epub 2020 Jan 22.
Implant fixed complete dental prostheses (IFCDPs) are widely used in the rehabilitation of completely edentulous patients, yet limited information is available on the relationship between prosthetic complications and patient-associated and prosthesis-associated risk factors.
The purpose of this retrospective study was to assess the prosthetic complication and survival rates of IFCDPs after a mean observational period of 3.5 years.
Eligible participants were identified by an electronic health record review. The study consisted of a review of the dental record and a single-visit study appointment when a comprehensive examination was performed, including a review of the medical and dental history, clinical and radiographic examination, intraoral photographs, patient satisfaction questionnaire, and occlusal analysis. Prosthodontic parameters and risk factors were assessed, including time with the prosthesis in place, bruxism, occlusal device use, prosthesis material, number of implants, cantilever length, and mode of prosthesis retention. Association between these prosthodontic parameters and risk factors and the observed prosthetic complications was assessed.
A total of 37 participants (mean age 62.35 ±10.39 years) with 48 IFCDPs were included. Thirty-eight prostheses were metal-acrylic resin (MR group), whereas 10 were metal-ceramic (MC group). Five of the 48 prostheses failed during the follow-up period, a cumulative prosthesis survival rate of 88%. Minor complications were more frequent than major complications. The most frequent minor complication was loss of screw access hole material (5.18%/year), whereas the most frequently observed major complication was major wear of the prosthetic material (5.85%/year). A significant association was found between not wearing an occlusal device and minor chipping, loss of access hole material, and framework fracture. Minor chipping was significantly associated with bruxism, whereas the opposing dentition significantly affected the total number of prosthetic complications.
High survival rates were observed with both MR and MC IFCDPs. No significant difference was found between MR and MC groups in terms of patient satisfaction, as well as total number of prosthetic complications.
种植体固定全口义齿（IFCDP）广泛应用于无牙颌患者的修复，但关于修复体并发症与患者相关和修复体相关的危险因素之间的关系，相关信息有限。
本回顾性研究的目的是评估 IFCDP 在平均观察期 3.5 年后的修复体并发症和存活率。
通过电子健康记录审查确定合格的参与者。该研究包括对牙科记录的审查和单次就诊预约，在预约时进行全面检查，包括审查病史和牙科病史、临床和影像学检查、口腔内照片、患者满意度问卷和咬合分析。评估了修复体参数和危险因素，包括修复体使用时间、磨牙症、咬合装置使用、修复体材料、种植体数量、悬臂长度和修复体保留方式。评估了这些修复体参数和危险因素与观察到的修复体并发症之间的关系。
共纳入 37 名参与者（平均年龄 62.35±10.39 岁），共 48 例 IFCDP。38 个修复体为金属丙烯酸树脂（MR 组），10 个为金属陶瓷（MC 组）。在随访期间，有 5 个修复体失败，累计修复体存活率为 88%。轻微并发症比重大并发症更常见。最常见的轻微并发症是螺丝孔材料丢失（5.18%/年），最常见的重大并发症是修复体材料严重磨损（5.85%/年）。未佩戴咬合装置与轻微崩瓷、螺丝孔材料丢失和支架断裂之间存在显著相关性。轻微崩瓷与磨牙症显著相关，而对颌牙显著影响修复体并发症的总数。
MR 和 MC IFCDP 的存活率均较高。MR 组和 MC 组在患者满意度以及修复体并发症总数方面无显著差异。
