Objective: The aim of this study was to improve the bond strength of titanium/porcelain by developing a kind of new Titanium-bonding-porcelain with better mechanical properties. Methods: Following the protective mechanism and design rules, and considering the standard free energy of formation of the oxides as well as the wetting ability, viscosity, thermal expansion coefficient, mechanical property and chemical stability of porcelain, the major components of the titanium-bonding-porcelain were selected. After the repeated test of soil phase reaction and heat treatment, Experimental Titanium-bonding-porcelain (glass-ceramic materials) was made. The coefficients of thermal expansion of Experimental Titanium-bonding-porcelain and casted pure Ti were determined. X-ray diffraction (XRD) analysis, the bending strength of Experimental Titanium-bonding-porcelain and VITA TITANKERAMIK Bonder (Vita, Germany) were performed respectively. The bonding strength of Experimental Titanium-bonding-porcelain and VITA TITANKERAMIK to titanium substrate were evaluated using the three-point bending test according to ISO 9693 1990. Results: The coefficient of thermal expansion of Experimental Titanium-bonding-porcelain and pure Ti were 8.29x10-6/°C,8.42x10-6/°C at 500°C respectively. The results of XRD analysis showed that the Experimental Titanium-bonding-porcelain was composed of a large amount of cassiterites and glass matrixes, while VITA TITANKERAMIK bonder only had glass matrixes. The bending strength of Experimental Titanium-bonding-porcelain(76.43±5.43MPa) was higher than that of VITA TITANKERAMIK bonder (63±4.52MPa) (P<0.05). The bonding strength of Experimental Titanium-bonding-porcelain /titanium(38.03±2.58MPa)was higher than that of VITA TITAKERAMIC/titanium(29.60±3.53MPa)(P<0.01). Conclusion: Experimental Titanium-bonding-porcelain has an ideal thermal compatibility with casted pure Ti. The mechanical properties and the bonding strength to titanium of Experimental Titanium-bonding-porcelain are superior to that of VITA TITAKERAMIC. Experimental Titanium-bonding-porcelain has a promising future.
Division: Chinese Division Meeting
Meeting:2005 Chinese Division Meeting (Shanghai, China) Location: Shanghai, China
Year: 2005 Final Presentation ID: Abstract Category|Abstract Category(s):Scientific Groups
Authors
Wang, Xiao Jie
( School of Stomatology,Fourth Military Medical University, Xi’an, N/A, China
)
Guo, Tian Wen
( School of Stomatology,Fourth Military Medical University, Xi’an, N/A, China
)
Zhang, Hui
( School of Stomatology,Fourth Military Medical University, Xi’an, N/A, China
)
Yu, Shu Xiang
( Chinese PLA 97 hospital, XuZhou, N/A, China
)
Zhou, Ze Yuan
( School of Stomatology,Fourth Military Medical University, Xi’an, N/A, China
)