摘要
目的:比较4种常用粘结材料对VITA MarkⅡ可切削陶瓷的粘结强度。方法:应用4种常用粘结材料(Fuji PLUS、Panavia F、RelyX Unicem和FL-BOND+Beautifil Flow),将切割好的瓷片、牙片粘结,水浴50h后和冷热循环3000次后测其剪切强度,体视显微镜观察粘结破坏情况。结果:水浴50h组中Panavia F、RelyX Unicem和FL-BOND+Beautifil Flow的剪切强度显著高于FujiPLUS的剪切强度(p<0.05)。冷热循环3000次组中Panavia F的剪切强度最高,与另3组的差异有统计学意义(p<0.05)。结论:Panavia F可用于MarkⅡ瓷的粘结,树脂改良型玻璃离子和自酸蚀粘结剂配合流动树脂的初期粘结强度尚可,但冷热循环后粘结强度下降明显。
Objective： To evaluate the shear bond strengths of four types bonding systems to VITA Mark Ⅱ machinable ceramics. Method： Ceramic slices and teeth slices were cemented with four bonding systems （Fuji PLUS, Panavia F, RelyX Unicem and Beautifil Flow cooperated with FL-BOND）. Then each group was subdivided into 2 subgroups according to 50-hour immersion in water or thermocychng of 3000 cycles.Shear bond strength was determined on an universal testing machine.Debonded surface was examined with lightmicroscope. Result： It was found that there was no significant differences between Panavia F, RelyX Unicem and FL-BOND＋Beautifil Flow, the values of which were higher than that of Fuji PLUS without thermocycling （P〈0.05）. Panavia F showed the greatest bond strength after thermocycling among the four bonding systems used. Conclusion： It was concluded that Panavia F can be used to bond Mark Ⅱ machinable ceramics. Resin-reinforced glass ionomer cement and light-cure flowable resin cooperated with adhesive can get good initial bond strengths too, but the persistent can not be great.
出处
《临床口腔医学杂志》
2008年第11期675-677,共3页
Journal of Clinical Stomatology
