Influence of Multiple Firing on the Bending Strength of Zirconia/Porcelain Bilayered Dental Ceramics

摘要：

Bilayered three-point bending strength specimen of KAVO zirconia-Vita VM9 veneering porcelain were made according to ISO6872 standard, the core to porcelain thickness ratio was 1:1. Specimens were subjected to multiple dentine porcelain firing cycles. Three-point bending strength were tested, SEM was used to observe the characteristics of the failure mode. Results show that there was no influence on the bending strength by multiple firing, the three-point bending strength were 996～1020 Mpa after multiple firing, and no obvious defects was found at the interfaces. In all bilayered specimen, the bulk fracture initiated at the tensile surface of the core material and was consistently accompanied with porcelain crush and delamination at the interface.

作者: Rong-Jian Lu Ting-Ting Ma Yuan-Fu Yi Long-Quan Shao Jie-Mo Tian Kang-Lin Hou Ning Wen Bin Deng

作者单位: Department of the Prosthodontics, The General Hospital of Chinese PLA, Beijing 100853,China Department of the Stomatology, The General Hospital of Chinese Peoples Armed Police Forces, Beijing Department of the Stomatology, The Nanfang Hospital, Guangzhou 510515, China State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China

会议类型: 国际会议

会议名称: The Second Annual Meeting on Testing and Evaluation of Inorganic Mateirals(第二届全国无机材料测试与评价学术年会 TEIM-2)

会议地点: 长沙

会议语种:英文

页码: 24-29

在线出版日期: 2011-06-30（万方平台首次上网日期，不代表论文的发表时间）