不同设计类型的IPS Empress铸瓷贴面前牙美学修复的疗效观察

目的：通过比较研究不同设计类型的IPS?Empress铸瓷贴面在前牙美学修复中的临床疗效，探讨铸瓷贴面不同设计类型对瓷贴面成功率的影响。方法分别采用唇面覆盖型（Ⅰ型）、唇切缘覆盖型（L型）和唇切邻面覆盖型（U型）3种类型的贴面修复方法，对41例患者共计124颗患牙行铸瓷贴面修复，于修复后1周、6个月，12个月复诊观察修复体保存完整度、颜色匹配和边缘适合性等评价指标，评估其临床疗效。?结果???Ⅰ型贴面在第12个月时有1例在切端出现微小间歇；L型贴面在第6个月时出现2例脱落，第12个月时又出现1例因咬硬物脱落；U型贴面在第6个月时有1例出现边缘微小缝隙。3种类型的贴面在各随访时间段的成功率比较无明显差异。结论3种类型的铸瓷贴面均能取得较好的临床修复效果。

A clinical evaluation of IPS Empress ceramic veneers in esthetic restoration of anterior teeth with different kinds ;of veneer designs

Objective To evaluate the success rates of IPS Empress ceramic veneers in esthetic restoration of anterior teeth with different veneer designs. Methods 124 anterior teeth in 41 patients were collected and prepared by labial overlap (type I), incisive edge overlap (type L) and finishing lines extended proximally (type U). The veneers’ integrity, fracture, color match and the marginal situation were evaluated at 1 week, 6 months and 12 months. Results For type I, 1 failure was found at 12-month follow-up. For type L, 2 failed at 6-month follow-up and 1 failure at 12-month followup. For type U, 1 failed at 6-month follow-up. There was no significant differences in success rates among three types of veneers. Conclusion Each type of IPS Empress ceramic veneer could get excellent clinical effectiveness.