Williamson R T, Kovarik R E, Mitchell R J
College of Dentistry, Chandler Medical Center, University of Kentucky, Lexington 40536-0084, USA.
Int J Prosthodont. 1996 Jan-Feb;9(1):30-7.
The objective of this study was to determine how surface treatments and moisture affect the flexure strength of a high-leucite feldspathic porcelain. Uniaxial flexure strength was measured for porcelain beams whose surfaces were coarse ground, overglazed, or polished. Half of the specimens were stored in distilled water and tested while their surfaces were coated with distilled water. The other half were stored in a dry environment and tested immediately in dry air. The high-leucite feldspathic porcelain was found to be sensitive to roughness and surface stresses, similar to leucite-free and low-leucite feldspathic porcelains. The experimental method used, however, was not sensitive enough to detect susceptibility to moisture.
本研究的目的是确定表面处理和湿度如何影响高白榴石长石质瓷的抗弯强度。对表面经过粗磨、釉上彩或抛光处理的瓷梁进行了单轴抗弯强度测量。一半的试样储存在蒸馏水中，并在其表面涂有蒸馏水的情况下进行测试。另一半则储存在干燥环境中，并在干燥空气中立即进行测试。结果发现，高白榴石长石质瓷与无白榴石和低白榴石长石质瓷类似，对粗糙度和表面应力敏感。然而，所采用的实验方法对检测湿度敏感性的灵敏度不够。
