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首页> 外文期刊>International Journal of Biomedical Science >To Compare and Evaluate the Bond Strength of Acrylic Denture Teeth with Heat Cure Acrylic Resin and Thermoplastic Denture Base Material after Different Surface Treatments of Acrylic Teeth - An In Vitro Study
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To Compare and Evaluate the Bond Strength of Acrylic Denture Teeth with Heat Cure Acrylic Resin and Thermoplastic Denture Base Material after Different Surface Treatments of Acrylic Teeth - An In Vitro Study

机译：比较和评估丙烯酸树脂假牙与热固化丙烯酸树脂和热塑性假牙基体材料在不同丙烯酸表面处理后的粘结强度-体外研究

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Background: Denture teeth made of acrylic resin are preferred because they chemically bond to denture base material but the problem of debonding is also common with the use of acrylic teeth. Many attempts have been done to improve bond strength of acrylic teeth which involves mechanical and chemical means. With the use of recently introduced thermoplastic denture base materials, the problem of tooth debonding has been increased due to the mechanical nature of the bond between these materials and the acrylic teeth. There is limited literature on bond strength of acrylic teeth and flexible denture materials and the methods to enhance it. The present study evaluates and compares the bond strength between acrylic teeth and heat cure resins and thermoplastic resins after different known denture tooth surface treatment methods, including use of methyl methacrylate; sandblasting and prefabricated vertical groove. Method: A total of 180 maxillary right central incisors were selected and divided into six groups of 30 samples each, according to the surface treatments and denture base material (heat cure or thermoplastic resins) used for processing. The bond strength of all specimens were tested in Universal Testing Machine. The obtained data were subjected to statistical analysis. Result: Results showed that there was statistical significant difference in mean bond strength after various surface treatments and processing of acrylic teeth with either heat cure or flexible denture material. Interpretation & Conclusion: The present findings suggest that vertical groove in the ridge lap area has highest bond strength amongst the groups processed with flexible denture material, and treatment of specimens with methyl methacrylate monomer for 5 sec has highest bond strength amongst all groups.
机译：背景技术：由丙烯酸树脂制成的假牙是优选的，因为它们化学键合到假牙基体材料上，但是脱胶的问题在使用丙烯酸牙时也很普遍。已经进行了许多尝试来改善丙烯酸类牙齿的粘结强度，这涉及机械和化学方法。使用最近引入的热塑性义齿基体材料，由于这些材料与丙烯酸类牙齿之间的结合的机械性质，牙齿分离的问题已经增加。关于丙烯酸类牙齿和柔性义齿材料的粘合强度及其增强方法的文献有限。本研究评估和比较了不同已知义齿表面处理方法（包括使用甲基丙烯酸甲酯）后，丙烯酸类牙齿与热固化树脂和热塑性树脂之间的粘结强度。喷砂和预制垂直槽。方法：根据表面处理和用于加工的义齿基托材料（热固化或热塑性树脂），共选择180颗上颌右中切牙，分为6组，每组30个样品。所有样品的粘结强度均在万能试验机中测试。对获得的数据进行统计分析。结果：结果表明，在各种表面处理和热固化或柔性义齿材料加工的丙烯酸牙之后，平均粘结强度存在统计学差异。解释与结论：目前的发现表明，在使用柔性义齿材料处理的组中，部区域的垂直凹槽具有最高的结合强度，而在所有组中，使用甲基丙烯酸甲酯单体处理样品5秒钟具有最高的结合强度。

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