三种材料修复基牙环状龋的临床疗效观察

目的　探讨修复可摘局部义齿引起的后基牙环状龋的较理想材料。方法　选择由戴用可摘局部义齿引起后基牙环状龋的门诊病例 2 86例 ,共 3 5 4颗患牙 ,随机分成三组 ,分别采用光固化复合树脂、玻璃离子和银汞合金进行充填治疗 ,随访观察 3年。结果　银汞合金与玻璃离子两组材料修复的成功率有显著性差异 ,0 .0 5 >P >0 .0 1。银汞合金与光固化复合树脂两组材料修复的成功率有高度显著性差异 ,P <0 .0 1。玻璃离子和光固化复合树脂两组材料修复的成功率无显著性差异 ,P >0 .0 5。结论　银汞合金为修复可摘局部义齿引起的后基牙环状龋的较理想材料。

Observation of clinicical curative effects on repairing abutment cricoid caries by three kinds of materials

Objective To investigate the ideal materials for hind abutment cricoid caries caused by removable partial denture. Methods 286 hind abutment cricoid caries cases caused by wearing removable partial denture, totally 354 decayed teeth were selected. Three groups were divided by randomization, light curing composite resin, glass ion group and silver amalgam were used in each group. After three years all the patients were examined. Results The successful rate between silver amalgam and glass ion group has significant difference(0.05> P >0.01). The successful rate between silver amalgam and light curing composite resin group has high significant difference( P <0.01). The successful rate between glass ion and light curing composite resin group has no statistical difference( P >0.05).Conclusion Silver amalgam is an ideal material for hind abutment cricoid caries caused by removable partial denture.