氧化锆处理剂和自粘接树脂水门汀对氧化锆陶瓷粘接的效果评价

Effects of a zirconia primer and a self-adhesive resin cement on zirconia bonding

目的评价包含酸性功能单体的氧化锆处理剂和自粘接树脂水门汀对氧化锆陶瓷粘接强度提高的效果。方法制作80枚氧化锆瓷片,粘接面以氧化铝喷砂后分为5组,分别为C组、R组、S组、ZC组、ZR组,其中S组应用溶胶凝胶法制备硅涂层后以硅烷偶联剂处理,ZC组和ZR组以氧化锆处理剂Z-Prime Plus处理。再制作80枚复合树脂圆片,将其粘接于处理后的陶瓷表面,C组、S组、ZC组使用传统双酚A双甲基丙烯酸缩水甘油酯(Bis-GMA树脂水门汀,R组、ZR组使用自粘接树脂水门汀。各组粘接试件又分为两亚组,分别于冷热循环前后测试剪切粘接强度(SBS)。以红外光谱和气相质谱分析表征氧化锆处理剂。结果 C组的SBS值最低,R组、ZC组和ZR组较高。冷热循环对SBS无显著影响。红外光谱分析可见,Z-Prime Plus中包含苯环、羰基等结构。气相质谱分析可知,Z-Prime Plus中包含2-甲基丙烯酸羟乙酯、三乙胺等成分。结论氧化锆处理剂和自粘接树脂水门汀的使用提高了氧化锆陶瓷的粘接性能。

Objective To evaluate the effects of a zirconia primer and a self-adhesive resin cement on the resin bonding zirconia. Methods Eighty zirconia blocks were manufactured, alumina-sandhlasted, and randomly divided into five groups that received surface-treatments using different resin cements： group C, treated with a conventional bisphenol-A diglycidyl dimethacrylate （Bis-GMA）-based resin cement; group R, treated with a self-adhesive resin cement; group S, silica-coated via a Sol-gel process, conditioned with silane, and then treated with the Bis-GMA-based resin cement; group ZC, conditioned with a zirconia primer （Z-Prime Plus） and subsequently treated with the Bis-GMA-based resin cement; group ZR, conditioned with the zirconia primer and treated with the self-adhesive resin cement. Light-cured composite resin cylinders were prepared and bonded on the prepared zirconia blocks. Half of the specimens in each group were water-stored for 24 hours, whereas the remaining specimens were aged by thermocycling. All specimens were then subjected to shear bond strength （SBS） testing. Fourier transmission infrared （FT-IR） spectroscopy and gas chromatography-mass spectrometry （MS） were performed to cha- racterize the zirconia primer. Results Group C presented the lowest SBS, whereas groups R, ZC, and ZR presented the highest values. Thermocycling had no effect on SBS. FT-IR results showed that Z-Prime Plus contained a benzene ring and a carbonyl group. MS analysis showed that Z-Prime Plus contained 2-hydroxyethyl methacrylate, triethylamine. Conclusion Zirconia primer and self-adhesive resin cement increase the resin bonding of zirconia.