摘要
目的研究铸钛的不同表面处理方法对钛-聚合瓷结合强度的影响。方法将24个铸钛试件随机分为光滑组、粗糙组、酸蚀光滑组和酸蚀粗糙组,每组6个。根据分组不同分别采用不同的表面处理方式,粗糙组进行喷砂处理,酸蚀光滑组进行酸蚀处理,酸蚀粗糙组喷砂后进行酸蚀,光滑组表面不做处理。表面处理后的钛试件与聚合瓷制备成钛-聚合瓷试件,测试其剪切结合强度,并在扫描电镜下观察钛表面形貌和剪切试验后钛与聚合瓷断裂面的形貌。结果光滑组、粗糙组、酸蚀光滑组和酸蚀粗糙组的剪切结合强度分别为(3.08±0.45)、(6.05±0.74)、(6.27±0.80)、(10.16±0.82)MPa。粗糙组、酸蚀光滑组和酸蚀粗糙组的剪切结合强度高于光滑组(P<0.01),其中酸蚀粗糙组的剪切结合强度最高,粗糙组和酸蚀光滑组间的剪切结合强度无统计学差异(P>0.05)。各组的钛表面形貌和剪切试验后钛与聚合瓷断裂面的形貌均有一定的差异。结论钛表面酸蚀处理和喷砂处理可提高钛-聚合瓷的剪切结合强度,喷砂后酸蚀处理是一种有效地提高钛-聚合瓷剪切结合强度的表面处理方法。
Objective To investigate the effectiveness of different surface treatments that could promote the bond strength of composite resin to commercially pure titanium. Methods The 24 casting pure titanium specimen were randomly divided into four groups： Smooth group, rough group, acid etching smooth group, acid etching rough group. Each group had six specimens. In the different groups, the specimens were treated respectively under different sur- face treatments. The specimens of rough group was sandblasted, the acid etching smooth group was treated by acid etching, the acid etching rough group was treated by acid etching after sandblasting, the smooth group had no treat- ment. After surface treatment, the casting pure titanium specimens that were veneered by composite resin became titanium-composite resin specimen. Then the bond strengths were evaluated by universal testing machine and the sur- faces were observed by scanning electron microscope including titanium surface appearance and titanium surface ap- pearance of different groups after shear test. Results The bond strengths of smooth group, rough group, acid etching smooth group, acid etching rough group were （3.08_＋0.45）, （6.05_＋0.74）, （6.27_＋0.80）, （10.16_＋0.82） MPa, respectively. The statistical analysis showed that the bond strengths in rough group, acid etching smooth group, acid etching rough group were higher than in smooth group（P〈O.01）. The highest bond strength was the acid etching rough group. There were no significant differences in the bond strength between rough group and acid etching smooth group （t~〉0.05）. There were some different titanium surface appearances in each group before and after testing. Conclusion Titanium surface treatment of sandblasting and etching can improve the bond strength between titanium and composite resin.The pre-treatment of sandblasting before etching is an effective modification method of titanium for bonding to composite resin.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2013年第1期13-16,共4页
West China Journal of Stomatology
基金
黑龙江省海外学人基金资助项目(1155h021)
佳木斯大学科研基金资助项目(s2009-045)
关键词
钛
聚合瓷
表面处理
结合强度
titanium
composite resin
surfacetreatment
bond strength
