过氧化氢局部应用对牙釉质、复合树脂表面及界面的影响。
Effect of hydrogen peroxide topical application on the enamel and composite resin surfaces and interface.
作者信息
Dutra Rodrigo A, Branco Jose R T, Alvim Hugo H, Poletto Luiz T A, Albuquerque Rodrigo C
机构信息
Department of Restorative Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
出版信息
Indian J Dent Res. 2009 Jan-Mar;20(1):65-70. doi: 10.4103/0970-9290.49074.
OBJECTIVES
The objective of the present study was to analyze the superficial roughness and the interface between enamel and composite resin restorations after dental bleaching procedure.
MATERIALS AND METHODS
Black's class V cavities were made and restored with composite resin, and the whole set, enamel-restorative material, was treated with 35% hydrogen peroxide. Seven procedures of 30 min each were performed. A profilometric assessment was carried out before and after the treatment of each sample, and roughness scores were obtained. Treated and untreated samples were analyzed under scanning electronic microscope and images of their surface were obtained.
RESULTS AND CONCLUSION
The treatment with 35% hydrogen peroxide caused no alteration in the interface between enamel and composite resin, Tetric Ceram, fillings and the topical application of 35% hydrogen peroxide on enamel and composite resin, Tetric Ceram, caused an alteration of their surface topography, featuring a predominance of depressions after the bleaching treatment.
目的
本研究的目的是分析牙齿漂白程序后釉质与复合树脂修复体之间的表面粗糙度及界面情况。
材料与方法
制备布莱克Ⅴ类洞并用复合树脂修复，整个样本，即釉质-修复材料，用35%的过氧化氢进行处理。共进行七次处理，每次30分钟。在对每个样本进行处理前后进行轮廓测量评估，获得粗糙度评分。对处理过和未处理过的样本进行扫描电子显微镜分析，并获取其表面图像。
结果与结论
35%的过氧化氢处理未导致釉质与复合树脂（Tetric Ceram）填充物之间的界面发生改变，并且在釉质和复合树脂（Tetric Ceram）上局部应用35%的过氧化氢导致其表面形貌发生改变，漂白处理后以凹陷为主。
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