（1.Department of Stomatology, the 359 Hospital of PLA, Zhenjiang Jiangsu 212001; 2.Medical Department,Hospital of PLA 73056 Unit, Zhenjiang Jiangsu 212004, China）
Abstract：[Abstract]Objective: To investigate the effect of middle layer with liquidphase deposition（LPD） technology on bonding strength of titanium and porcelain in different condition. Methods： Fifty pure titanium specimens were randomly divided into ten groups（n=5）according to different surface treatments after sandblasting. The surface of titanium was investigated by scanning electron microscope(SEM）.After the middle area of the samples was veneered with porcelain, a threepointflexuretest was used to evaluate the bonding strength of titanium to porcelain.Results： The bonding strength of groups of liquidphase deposition were significantly higher than control group(P＜0.05). The mean bonding strength of pH=9,0.3 mol/L silicate solution group was the highest\[(38.86±2.63)MPa\], it was significantly higher than those of other nine groups(P＜0.05). Conclusion： Middle layer prepared by LPD technology was significant in improving bonding strength of porcelain and pure titanium, the bonding strength was the highest by pH=9,0.3 mol/L silicate solution.
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2013, Vol. 23 
