摘要
目的:为了提高氧化锆修复体的粘接强度,使用热酸蚀法处理氧化锆的粘接表面,并比较处理后用两种常用树脂粘接剂粘接到牙釉质表面的剪切粘接强度。方法:分别制作光滑的牙釉质粘接面和氧化锆粘接面,氧化锆表面分别接受空白处理、喷砂处理、热酸蚀表面处理。电子显微镜观察处理后的氧化锆表面形态,使用Super Bond C&B和Panavia F 2.0树脂粘接剂进行粘接。使用万能力学试验机进行剪切实验,十字头加载速度为1 mm/s,并使用单因素方差分析对数据进行统计学分析以比较热酸蚀处理对氧化锆和树脂粘接强度的影响。结果:Super Bond组氧化锆剪切粘接强度分别为:空白处理(23.37±3.94)MPa、喷砂处理(25.95±3.05)MPa、热酸蚀处理(34.52±1.8)MPa;Panavia组氧化锆剪切粘接强度分别为:空白处理(12.91±3.33)MPa、喷砂处理(14.00±3.28)MPa、热酸蚀处理(18.47±4.16)MPa。两种粘接剂组中热酸蚀处理后的氧化锆试件剪切粘接强度明显高于空白处理和喷砂处理,差异具有统计学意义(P<0.01)。结论:热酸蚀处理可以有效提升氧化锆表面和树脂的粘接强度。
Objective：To evaluate the effect of hot-etching pretreatment of surface of zirconia on the shear bond strength of interface between zirconia and the two different resin cements. Methods： Smooth enamel surfaces of fresh extracted human teeth and zirconia discs were prepared, and the surface of zirco- nia discs were treated with the following different methods： no treatment, airborne particle abrasion with 50 μm Al2O3 particles, hot-etching treatment for 60 min. The surface morphology was observed with scanning electron microscope （SEM）. Two commercial resin bond systems （Super Bond C＆B and Panavia F2.0） were used to cement the zirconia discs to enamel surfaces according to the instruction. Shear bond test was conducted with universal testing machine at a crosshead speed of 1 mm/min. Single-factor ANOVA （ analysis of variance） statistical analysis was performed to compare the differences of shear bond strengths between the groups （α= 0.01 ）. Results： The shear bond strengths of Super Bond group were （23.37 ± 3.94） MPa, （25.95 ± 3.05 ） MPa and （34.52 ± 1.8） MPa respectively for no treatment, airborne particle abrasion, and hot-etching treatments. The shear bond strengths of Panavia group were （12.91 ±3.33） MPa, （14.00±3.28） MPa, and （18.47 ±4.16） MPa respectively for no treatment, airborne particle abrasion, and hot-etching treatments. The shear bond strengths were increased by hotetching treatment compared with no treatment and airborne particle abrasion treatment （ P 〈 0.01 ）. Conclusion： The result indicated that the hot-etching technique could improve the shear bond strength between zireonia and resin cements.
出处
《北京大学学报（医学版）》
CAS
CSCD
北大核心
2014年第2期302-305,共4页
Journal of Peking University:Health Sciences
关键词
酸蚀
牙
氧化锆
树脂粘接剂
抗剪切强度
Acid etching, dental
Zirconia
Resin cements
Shear strength
