有无氧化锆增强的贴面玻璃纤维增强复合材料及玻璃渗透氧化铝的失效概率。

Probability of failure of veneered glass fiber-reinforced composites and glass-infiltrated alumina with or without zirconia reinforcement.

作者信息

Chong Kok-Heng, Chai John

机构信息

Department of Biologic and Material Science, Division of Prosthodontics, School of Dentistry, University of Michigan, Ann Arbor 48109-1078, USA.

出版信息

Int J Prosthodont. 2003 Sep-Oct;16(5):487-92.

PMID:14651232

Abstract

PURPOSE

The probability of failure under flexural load of veneered specimens of a unidirectional glass fiber-reinforced composite (FibreKor/Sculpture), a bidirectional glass fiber-reinforced composite (Vectris/Targis), a glass-infiltrated alumina (In-Ceram Alumina/Vita alpha), and a zirconia-reinforced glass-infiltrated alumina (In-Ceram Zirconia/Vita alpha) was investigated; a metal-ceramic (PG200/Vita omega) system served as a control.

MATERIALS AND METHODS

Ten uniform beams of the veneered core materials were fabricated for each system and subjected to a three-point bending test. The data were analyzed using the Weibull method. The failure load of specimens at a 10% probability of failure (B10 load) was compared. The mode of failure was analyzed.

RESULTS

The B10 load of the systems investigated was not significantly different from that of the metal-ceramic system. FibreKor possessed significantly higher B10 load than Vectris, In-Ceram Alumina, and In-Ceram Zirconia. The B10 strength loads of Vectris, In-Ceram Alumina, and In-Ceram Zirconia were not significantly different from one another.

CONCLUSION

The probability of FibreKor to fracture under a flexural load was significantly lower than that of Vectris, In-Ceram Alumina, or In-Ceram Zirconia.

摘要

目的

研究单向玻璃纤维增强复合材料（FibreKor/Sculpture）、双向玻璃纤维增强复合材料（Vectris/Targis）、玻璃渗透氧化铝（In-Ceram Alumina/Vita alpha）和氧化锆增强玻璃渗透氧化铝（In-Ceram Zirconia/Vita alpha）的贴面试件在弯曲载荷下的失效概率；以金属陶瓷（PG200/Vita omega）系统作为对照。