Oku J
Dent Mater J. 1989 Dec;8(2):186-93. doi: 10.4012/dmj.8.186.
The temperature dependence of the impact strength, resilience, and toughness of the acrylic denture base resins on temperature changes was examined by using a modified impact testing machine. In addition, the creep properties and the residual monomer of their resins were measured; and considering these properties, the impact characteristics of the denture base resins were discussed. With an increase in temperature, the impact properties of all the acrylic denture base resins tested decreased. Furthermore, there was an adequate correlation between the impact characteristics and the amount of the residual monomer. The coefficient of correlation was 0.92 for the impact strength, -0.95 for the resilience and 0.94 for the toughness. For the cold cured acrylic resins, both elastic moduli obtained by the impact test and by the creep test increased obviously according to an increase in the time which elapsed after polymerization.
使用改良的冲击试验机研究了丙烯酸类义齿基托树脂的冲击强度、回弹性和韧性随温度变化的温度依赖性。此外，还测量了其树脂的蠕变性能和残余单体含量；并综合考虑这些性能，对义齿基托树脂的冲击特性进行了讨论。随着温度升高，所有测试的丙烯酸类义齿基托树脂的冲击性能均下降。此外，冲击特性与残余单体量之间存在良好的相关性。冲击强度的相关系数为0.92，回弹性为-0.95，韧性为0.94。对于冷固化丙烯酸树脂，通过冲击试验和蠕变试验获得的弹性模量均随着聚合后经过时间的增加而明显增加。
