Chatterjee Nirmalya, Gupta Tapas K, Banerjee Ardhendu
J Indian Prosthodont Soc. 2011 Mar;11(1):20-5. doi: 10.1007/s13191-011-0053-1. Epub 2011 Mar 6.
Visible light-cured composite resins have become popular in prosthetic dentistry for the replacement of fractured/debonded denture teeth, making composite denture teeth on partial denture metal frameworks, esthetic modification of denture teeth to harmonize with the characteristics of adjacent natural teeth, remodelling of worn occlusal surfaces of posterior denture teeth etc. However, the researches published on the bond strength between VLC composite resins and acrylic resin denture teeth is very limited. The purpose of this study is to investigate the effect of five different methods of surface treatments on acrylic resin teeth on the shear bond strength between light activated composite resin and acrylic resin denture teeth. Ninety cylindrical sticks of acrylic resin with denture teeth mounted atop were prepared. Various treatments were done upon the acrylic resin teeth surfaces. The samples were divided into six groups, containing 15 samples each. Over all the treated and untreated surfaces of all groups, light-cured composite resin was applied. The shear strengths were measured in a Universal Testing Machine using a knife-edge shear test. Data were analyzed using one way analysis of variance (ANOVA) and mean values were compared by the F test. Application of bonding agent with prior treatment of methyl methacrylate on the acrylic resin denture teeth resulted in maximum bond strength with composite resin.
可见光固化复合树脂在口腔修复学中已广泛应用于修复折断/脱粘的义齿牙齿，用于制作局部义齿金属支架上的复合树脂义齿牙齿，对义齿牙齿进行美学修饰以使其与相邻天然牙的特征相协调，重塑后牙义齿磨损的咬合面等。然而，关于可见光固化复合树脂与丙烯酸树脂义齿牙齿之间粘结强度的研究非常有限。本研究的目的是探讨五种不同的表面处理方法对丙烯酸树脂牙齿表面处理后，光固化复合树脂与丙烯酸树脂义齿牙齿之间剪切粘结强度的影响。制备了90根顶部安装有义齿牙齿的丙烯酸树脂圆柱棒。对丙烯酸树脂牙齿表面进行了各种处理。将样本分为六组，每组15个样本。在所有组的所有处理和未处理表面上均应用光固化复合树脂。使用刀口剪切试验在万能试验机上测量剪切强度。数据采用单因素方差分析（ANOVA）进行分析，并通过F检验比较平均值。在丙烯酸树脂义齿牙齿上先用甲基丙烯酸甲酯进行预处理后再应用粘结剂，可使与复合树脂的粘结强度达到最大。
