Baker P S, Clark A E
Department of Prosthodontics, College of Dentistry, University of Florida, Gainesville.
Int J Prosthodont. 1993 May-Jun;6(3):291-7.
This work compared the tensile strength of two glass compositions with published values of currently available dental porcelains. The influence of several variables, such as air and vacuum firing, firing temperature, surface roughness, immersion in water, and the inclusion of filler particles, on the inherent strength of the glass compositions is also discussed. The authors developed a glass frit having a tensile strength of 102.4 MPa as determined by the biaxial flexure technique. This value compares favorably with the reported strength of commercial brands of feldspathic porcelains. The strength of this glass was not significantly reduced as a result of surface abrasion or immersion in distilled water.
这项工作将两种玻璃成分的拉伸强度与现有牙科瓷器已公布的值进行了比较。还讨论了几个变量，如空气和真空烧制、烧制温度、表面粗糙度、水浸以及填料颗粒的加入，对玻璃成分固有强度的影响。作者开发了一种玻璃料，通过双轴弯曲技术测定其拉伸强度为102.4兆帕。该值与报道的长石质瓷器商业品牌的强度相比具有优势。这种玻璃的强度不会因表面磨损或浸入蒸馏水中而显著降低。
