不同材料对楔状缺损疗效影响的分析

目的 比较Dyract AP复合体和3M-VitremerTM光固化玻璃离子水门汀两种材料修复牙体楔状缺损的临床效果.方法 便利取样法选取2009年7月至2011年6月接受楔状缺损修复治疗的89例患者的246颗楔状缺损患牙,随机法分为A、B两组。A组（121颗）采用Dyract AP复合体充填修复,B组（125颗）采用3 M-VitremerTM光固化玻璃离子水门汀充填修复,随访期为2年,评定两种材料修复成功率.结果 术后1年末,A组患牙修复成功率（91.0％）与B组（93.2％）比较,差异无统计学意义（x^2 =0.393,P＞0.05）;术后2年末,A组成功率（79.4％）显著低于B组（89.4％）,两组差异有统计学意义（x^2 =4.100,P ＜0.05）.结论 3M-VitremerTM光固化玻璃离子水门汀修复楔状缺损效果优于Dyract AP复合体。

Research on efficacy of treatment for teeth wedge-shaped defects with different materials

Objective To evaluate clinically the efficacy of two materials （ Dyract AP and 3M-Vitremer glass-ionomer cement） for restoration of dental wedge-shaped defects. Methods In the research, a total of 246 teeth with wedge-shaped defects were restored by Dyract AP and 3M-Vitremer glass-ionomer cement from July 2009 to June 2011 and the 89 out-patients were collected by convenience sampling method. The 246 teeth were randomly divided into two groups. The defects of group A were restored by Dyract AP complex and group B by 3M-Vitremer glass-ionomer cement. One-year and two year follow-up results were evaluated with modified USPHS evaluation criterion. Results There were no significant differences between the 1-year successful rate of group A （91.0%）and that of group B（93.2% ） （X^2 =0. 393, P 〉0. 05）. The 2-year successful rate of group A（79. 4% ）was lower than that of group B（ 89.4% ） , and the difference was statistically significant（ X^2 = 4. 100, P 〈 0. 05 ）. Conclusions The efficacy of 3 M-Vitremer glass-ionomer cement is superior to that of Dyract AP complex in treating teeth with wedge-shaped defects.