Department of Biomaterials Science, College of Dentistry, Dankook University, San-29 Anseo, Cheonan, 330-716, Korea.
Dent Mater J. 2012 Feb 3;31(1):157-64. doi: 10.4012/dmj.2011-205. Epub 2012 Jan 21.
The aim of the present study was to measure various mechanical properties of acrylic denture base resins, including flexural modulus, flexural strength, fracture toughness, Barcol and Vickers hardness and their related properties, and to investigate correlations between different mechanical properties. Resin specimens were prepared according to manufacturers' recommended instructions. The mechanical properties were measured under specified standards. Data from the mechanical tests were examined using correlation tests. In general, the mean results for mechanical properties of each specimen group were differently ranked depending on the tested mechanical property. The flexural modulus value showed strong or reasonable positive correlation with those of proportional limit, flexural strength, and surface hardness. In contrast, fracture toughness revealed strong negative correlations with the flexural parameters and hardness values. Results of correlation tests for the different parameters can be used for estimation of mechanical performance of acrylic denture bases in clinical situation and for quality control purposes.
本研究旨在测量丙烯酸类义齿基托树脂的各种机械性能，包括弯曲模量、弯曲强度、断裂韧性、巴氏硬度和维氏硬度及其相关性能，并研究不同机械性能之间的相关性。根据制造商的建议说明制备树脂样本。在规定的标准下测量机械性能。使用相关测试检查机械测试的数据。一般来说，根据测试的机械性能，每个样本组的机械性能平均值的排序结果会有所不同。弯曲模量值与比例极限、弯曲强度和表面硬度值呈强或合理的正相关。相比之下，断裂韧性与弯曲参数和硬度值呈强负相关。不同参数的相关测试结果可用于临床情况下丙烯酸类义齿基托机械性能的估计和质量控制。
