老年人可摘局部义齿修复对基牙的影响

目的:分析研究老年人可摘局部义齿修复后对基牙的影响,探讨其原因及预防措施。方法:对95例牙列缺失后的老年人行冷弯卡环固位式可摘局部义齿修复,记录和比较戴可摘局部义齿后基牙和非基牙的龋坏率和缺失率,用χ2检验分析其结果有无差异,并对影响基牙的原因进行分析。结果:戴用可摘局部义齿5a后,基牙的患龋率(17.38%)显著高于非基牙(7.10%);因牙折、牙周病松动及龋坏无法保留而拔除的基牙缺失率(27.01%)也显著高于非基牙(7.79%)(P<0.01)。结论:冷弯卡环固位可摘局部义齿修复后在一定程度上可增加老年人基牙的患龋率和缺失率。

The effects of removable partial dentures on abutment teeth in elder patients

PURPOSE: To analyse the effects of removable partial dentures on abutment teeth in elder patient and to discuss the reason of the effects and the preventive measures. METHODS: 95 aged patients with removable partial dentures were involved in the investigation, the rate of dental caries, fractures and missing in their abutment and non abutment teeth and the reason were recorded and analysed. X2 test was used for the statistical comparison. RESULTS: The removable partial denture in 5 years after wearing, the dental caries rate of the abutment teeth (17.38%) was significantly higher than the non abutment teeth (7.10%) (P<0.01). The missing abutment teeth (27.01%) extracted because of fracture or loose that made by periodontal disease and dental caries which can not be reserved was significantly higher than that of non abutment teeth (7.79%). CONCLUSION: The effect on abutment teeth of removable partial denture in aged patients were complex and it can increase the rate of dental caries , fracture and missing of abutment teeth.