高嵌体修复隐裂牙5年随访分析

A 5year Followup Evaluation of Onlay Restoration on Incompletely Fractured Tooth

对２１名患者的２２颗隐裂牙进行钴铬合金高嵌体保护性修复，５年后进行随访。结果：有１５例１６颗牙高嵌体稳固完好，５例高嵌体脱落者经及时处理后，现仍在良好的行使功能，１例因“根尖炎”拔除。说明高嵌体保护隐裂牙有一定的临床意义。但是应注意严格嵌体洞型预备，调整好咬合关系，定期观察，防止产生继发龋及嵌体脱落。

Twenty two incompletely fractured teeth from 21 patients were restored by chrome cobalt alloy onlays, all of patients attended the followup study within 5 years. 16 onlays in 15 cases had good performance. 5 onlays, those were refixed timely after they had lost, still worked well. One case was extracted for apicitis'. The clinical results showed that onlay restoration was the effective way for protecting incompletely farctured tooth, meanwhile, it is very important to prevent tooth from secondary caries, and onlay from coming out by means of accomplished preparation, accurate adjustment and regular reexamine.