DeHoff P H, Anusavice K J, Boyce R J
J Dent Res. 1983 May;62(5):593-7. doi: 10.1177/00220345830620051901.
An analysis of the stresses which develop during air cooling and shock testing of a simulated porcelain-metal crown is presented. Strain gauges were used to experimentally determine porcelain surface stresses during shock testing. The finite element method was used to calculate stress patterns throughout the simulated crown. This study indicates that the previously reported high degree of correlation between dilatometry-derived compatibility index values and delta T values may be related to porcelain tensile strengths and defect density.
本文对模拟烤瓷熔附金属全冠在空气冷却和冲击测试过程中产生的应力进行了分析。在冲击测试期间，使用应变片通过实验测定瓷表面应力。采用有限元方法计算整个模拟全冠的应力模式。本研究表明，先前报道的由热膨胀法得出的相容性指数值与温差值之间的高度相关性可能与瓷的拉伸强度和缺陷密度有关。
