Department of Dental Materials and Prosthodontics, Araçatuba Dental School, Univ Estadual Paulista, Araçatuba, SP, Brazil.
J Appl Oral Sci. 2012 Nov-Dec;20(6):649-54. doi: 10.1590/s1678-77572012000600010.
The development of implant dentistry improved the possibilities of rehabilitation with maxillofacial prosthesis. However, clinically it is difficult to bond the silicone to the attachment system.
This study aimed to evaluate the effect of an adhesive system on the bond strength between acrylic resin and facial silicone.
A total of 120 samples were fabricated with auto-polymerized acrylic resin and MDX 4-4210 facial silicone. Both materials were bonded through mechanical retentions and/or application of primers (DC 1205 primer and Sofreliner primer S) and adhesive (silastic medical adhesive type A) or not (control group). Samples were divided into 12 groups according to the method used to attach the silicone to the acrylic resin. All samples were subjected to a T-peel test in a universal testing machine. Failures were classified as adhesive, cohesive or mixed. The data were evaluated by the analysis of variance (ANOVA) and the Tukey's HSD test (α=.05).
The highest bond strength values (5.95 N/mm; 3.07 N/mm; 4.75 N/mm) were recorded for the samples that received a Sofreliner primer application. These values were significantly higher when the samples had no scratches and did not receive the application of silastic medical adhesive type A.
The most common type of failure was adhesive. The use of Sofreliner primer increased the bond strength between the auto-polymerized acrylic resin and the Silastic MDX 4-4210 facial silicone.
种植义齿的发展提高了颌面赝复体修复的可能性。然而，临床上将硅橡胶与附着体系统粘结具有一定的难度。
本研究旨在评估一种粘结系统对丙烯酸树脂与面部硅橡胶之间粘结强度的影响。
共制作 120 个自凝丙烯酸树脂和 MDX 4-4210 面部硅橡胶样本。两种材料通过机械固位和/或应用底涂剂（DC 1205 底涂剂和 Sofreliner 底涂剂 S）和粘结剂（硅橡胶医用粘结剂 A 型）或不使用粘结剂（对照组）粘结。根据将硅橡胶附着到丙烯酸树脂上的方法，将样本分为 12 组。所有样本均在万能试验机上进行 T 型剥离试验。失效类型分为粘结、内聚或混合。通过方差分析（ANOVA）和 Tukey's HSD 检验（α=.05）对数据进行评估。
接受 Sofreliner 底涂剂应用的样本具有最高的粘结强度值（5.95 N/mm；3.07 N/mm；4.75 N/mm）。当样本无划痕且未使用硅橡胶医用粘结剂 A 型时，这些值显著更高。
最常见的失效类型是粘结失效。使用 Sofreliner 底涂剂增加了自凝丙烯酸树脂和 Silastic MDX 4-4210 面部硅橡胶之间的粘结强度。
