前牙美容修复夹层技术应用研究

Application of sandwich technique to anterior tooth aesthetical repairment

目的观察用夹层技术修复活髓前牙的临床治疗效果。方法将2004年7月至2008年3月在深圳市龙岗区人民医院和龙岗区中心医院口腔科就诊的前牙深龋患者118例(236颗患牙),随机分为试验组116颗和对照组120颗,分别以玻璃离子水门汀夹层修复和以氢氧化钙垫底后纳米树脂修复,比较治疗后3年的临床疗效和修复后反应。结果试验夹层技术组成功率为93.97%,对照组传统方法修复为84.17%,两种方法疗效差异有统计学意义(P<0.05)。夹层技术组牙髓炎和继发龋的发生率低于对照组(P<0.05),而边缘密合性和充填物脱落发生率两者之间差异无统计学意义(P>0.05)。结论夹层技术将纳米树脂和玻璃离子性能相互补偿,使活髓前牙的修复达到理想效果。

Objective To observe the therapeutic effect of repairing vital anterior tooth with the sandwich technique and Z350 nanocomposite.Methods A total of 236pcs deep caries anterior tooth were divided into 2 groups randomly.Test group was treated by sandwich technique;control group was restored by classic method;compare clinical therapy and the effect after repairing.Results The result shows the success rate of sandwich technique group was 93.97%,while the control group 84.17%.There was remarkable difference between the 2 therapie(sP<0.05):the occurrence rate of pulpi-tis and secondary caries in sandwich technique group was lower than contrasting group(P<0.05),but there was no big difference between the occurrence rate of marginal adaptation and restoration fracture(P<0.05).Conclusion Sand-wich technique makes it possible to complement the property of Z350 nanocomposite and glass ionomer cement,and it results in the ideal therapeutic effect of repairing deep caries anterior tooth.