Purcell Bradley A, McGlumphy Edwin A, Holloway Julie A, Beck Frank M
Int J Oral Maxillofac Implants. 2008 Sep-Oct;23(5):847-57.
The purpose of this study was to investigate the prosthetic complications of patients with a maxillary complete removable dental prosthesis opposing a mandibular metal-resin implant fixed complete dental prosthesis.
This study is a retrospective analysis of an ongoing prospective study. Dental records from 46 patients treated with a maxillary complete removable dental prosthesis and a mandibular metal-resin implant-fixed complete dental prosthesis were reviewed for 15 different prosthetic complications. The average recall time was 7.9 years. The percentage of patients exhibiting each complication and corresponding 95% confidence intervals was calculated. Logistic regression analysis determined the effect of recall period, age, and gender on each of the following major complications: tooth fracture, complete denture relines, screw complications, and tooth replacement. The recall period was divided into 3 parts: < or = 2 years, 2 to 5 years, and more than 5 years.
Statistical significance was exhibited for complete denture relines, posterior tooth replacement, and screw complications. No abutment or framework fractures were recorded for any of the time intervals. The most common complications were prosthetic tooth fracture, tooth wear, maxillary hard relines, and screw complications. Patients were 1.06 times more likely to require a heat-processed hard reline with each year increase of age. After 2 to 5 years and > 5 years, patients were 3.7 times and 8.5 times more likely to require a hard reline than at < or = 2 years. Patients were 52.5 times more likely to need posterior tooth replacement at > 5 years than at < or = 2 years, and 7.7 times more likely to encounter a screw complication at > 5 years than at < or = 2 years.
本研究旨在调查佩戴上颌全口可摘义齿并与下颌金属树脂种植固定全口义齿相对合的患者的修复并发症情况。
本研究是对一项正在进行的前瞻性研究的回顾性分析。回顾了46例接受上颌全口可摘义齿和下颌金属树脂种植固定全口义齿治疗的患者的牙科记录，以分析15种不同的修复并发症。平均复诊时间为7.9年。计算了出现每种并发症的患者百分比及相应的95%置信区间。逻辑回归分析确定了复诊时间、年龄和性别对以下主要并发症的影响：牙齿折断、全口义齿重衬、螺钉并发症和牙齿替换。复诊时间分为3部分：≤2年、2至5年和超过5年。
全口义齿重衬、后牙替换和螺钉并发症具有统计学意义。在任何时间段均未记录到基牙或支架折断情况。最常见的并发症是修复体牙齿折断、牙齿磨损、上颌硬重衬和螺钉并发症。年龄每增加一岁，患者需要热凝硬重衬的可能性增加1.06倍。在2至5年和>5年后，患者需要硬重衬的可能性分别是≤2年时的3.7倍和8.5倍。与≤2年相比，患者在>5年后需要后牙替换的可能性高52.5倍，遇到螺钉并发症的可能性高7.7倍。
