摘要
目的 :研究两种牙本质表面处理剂对Dyract修复Ⅴ类洞边缘封闭性的影响。 方法 :选择 10 0颗无龋坏的前磨牙在颈部制备Ⅴ类洞 ,随机分为四组用 2 .5 %NaOCl、17%EDTA处理窝洞后Dyract复合体充填。经品红染色后纵剖牙体 ,检测充填体与牙体间的染色深度。结果 :2 .5 %NaOCl处理组 ,17%EDTA处理组与未处理组之间染色深度有显著性差异 (P <0 .0 1) ,以 17%EDTA +2 .5 %NaOCl+17%EDTA组效果最佳。结论
Objective:To observe the effect of 17%EDTA and 2.5%NaOCl on the micro leakage of Dyract.Methods:100 teeth without caries were seleeted and Ⅴ type cavities were made in the neck of the teeth.The teeth were divided into 4 groups randomly.One served as control group the other were treated with 2.5%NaOCl,17%EDTA and 17%EDTA+2.5%NaOCl+17%EDTA respectively. All the teeth were filled with Dyract. Dying with 0.5%Basic Fuchsin ,the teeth were longitudinal-sectioned and the depth of the dying was observed.Results:There are significant differences between the control and the treated groups.( P <0.01),but no differences among the treated groups( P >0.05).Conclusion:The combined usage of EDTA and NaOCl can reduce the micro-leakage of the Dyract.
出处
《口腔医学纵横》
CSCD
2002年第2期113-114,共2页
Journal of Comprehensive Stomatology
