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本研究的目的是用电测试方法评价复合树脂修复的边缘泄漏,其方法如下。 (1)将拨出的人前牙在唇面中部钻出一个直径约为2.0mm,深度约为1.5mm的圆筒形窝洞。 (2)两种复合材料(Clearfil FⅡNew Bond,Silux)用于下列五种情况以制备试件:①Clearfil FⅡ同时采用酸蚀和粘结;②Clearfil FⅡ仅采用粘结;③Clear-fil FⅡ没有任何预先处理;④Silux同时采用酸蚀和粘结;⑤Silux没有任何预先处理。在窝洞充填后,将牙齿试件浸泡于37℃的生理盐水中,按下述方法进行三种测试:
The purpose of this study was to evaluate the edge leakage of composite resin repair using the electrical test method as follows. (1) Drill out the anterior tooth of a human being to drill a cylindrical cavity of about 2.0 mm in diameter and about 1.5 mm deep in the middle of the labial surface. (2) Two kinds of composites (Clearfil F II New Bond, Silux) were used in the following five cases to prepare the test pieces: ①Clearfil FⅡ was treated with acid etching and bonding at the same time; ②Clearfil FⅡ was only bonded; ③Clear-fil FⅡ was without any pretreatment ; ④Silux etching and bonding at the same time; ⑤Silux without any pre-treatment. After filling the cavities, the dental specimens were immersed in physiological saline at 37 ° C and subjected to three tests as follows: