In-Ceram冠修复上颌前牙牙体缺损的临床观察

目的探讨In-Ceram全瓷冠结合铸造金属桩修复上颌前牙牙体缺损的临床效果。方法60例患者,184颗牙随机平均分成两组,实验组以In-Ceram全瓷冠和铸造金属桩修复;对照组以Ni-Cr金属烤瓷冠和铸造金属桩核修复。采用美国加利弗尼亚牙科协会的评价标准对临床结果进行追踪评价。结果经3年的临床观察,实验组的颜色满意程度、牙龈着色、牙龈反应、边缘适合性及边缘着色均优于对照组,两组间差异有统计学意义（P〈0.01）;修复体完整度方面两组差异无统计学意义（P=0.65）。结论In-Ceram全瓷冠修复牙体缺损的临床效果优于金属烤瓷冠。

Observation for the clinical effect of In-Ceram crown on maxillary anterior tooth defect restoration

Objective To investigate the clinical effect of In-Ceram all ceramic crown and cast post-core in restoring maxillary anterior tooth defect. Methods A total of 60 patients （184 teeth） were randomly divided into two groups ： in the experimental group, 30 patients of 92 teeth were restored with In-Ceram all ceramic crown and cast post-core ; and the control group, 30 patients of 92 teeth were restored with Ni-Cr porcelain-fused-to-ceramic crown and cast post-core. The California Dental Association quality assessment evaluation system was used to assessing the clinical results. Results After 3-year＇s follow-up, significant defference was observed between the two groups （P 〈 0.01）. The color stability, gingival coloration, gum reaction, margin adequacy and marginal discoloration of the experimental group were superior to those of the control group. However, there was no significant difference （P=0.65） with respect to the prosthesis integrity. Conclusions In-Ceram all ceramic crown has a better effect on maxillary anterior tooth defect restoration compared with porcelain-fused-to-ceramic crown.