Microstructure of Interface between Zirconia and Veneer Porcelain
Objective: To study whether the veneering technique will have an impact on zirconia grain and the bonding type and relationship on interface between zirconia and veneer porcelain. Materials and methods: After sintered, zirconia was annealed for 15 minute to finish the phase transition from m to t.4 types of veneer porcelains were sintered and observed with SEM (scanning electron microscopy) and TEM (transmission electron microscopy). Results: With etching time extending, it appeared that many materials loosed and corrosional pit deepened, enlarged in the veneer porcelain, which made crystallize structure move into veneering surface. Composition of interface mainly was amorphous glass matrix and zirconia. Energy spectrum analysis showed that there was no remnant glass composition in the zirconia side departing from interface. SEM showed that crystal in veneering side did not participate interface bonding. Conclusion: The interface between 4 types of veneer porcelains and zirconia bonded well. Veneering sintering technique didnt change lattice structure of zirconia, which still was tetragonal structure. The specific bonding property of interface still remained to be analyzed further to determine.
Bin Deng Hong-Chen Liu Yuan-Fu Yi Long-Quan Shao Kang-Lin Hou Rong-Jian Lu Jie-Mo Tian Ning Wen
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 Hospita, Guangzhou 510515, China State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, China
国际会议
长沙
英文
55-60
2011-06-30（万方平台首次上网日期，不代表论文的发表时间）