4种粘结剂对ceramage聚合瓷嵌体微渗漏的对比研究

Comparative study of microleakage about ceramage inlays with 4 kinds of adhesive materials

目的比较4种粘结剂粘固ceramage聚合瓷嵌体产生的微渗漏,为临床选择合适的粘结剂提供依据。方法将20个离体牙按标准制作洞型和相应的嵌体,随机分为4组,每组5个,分别用3M Unicem自粘结通用树脂水门汀、DMG PermaCem双固化粘结剂、3M RelyX Luting树脂加强型玻璃离子、松风CX-玻璃离子,按要求粘固、染色后切开,三维显微镜测量嵌体与牙体间的间隙和微渗漏。结果 4组嵌体的密合度差异无统计学意义(均P>0.05),微渗漏值松风CX-玻璃离子粘固组最大,3M Unicem自粘结通用树脂水门汀粘固组最小,3M RelyX Luting树脂加强型玻璃离子粘固组与DMG PermaCem双固化粘结剂粘固组间的差异无统计学意义(P>0.05),与其他两组间的差异均有高度统计学意义(均P<0.01)。结论 4种粘接剂中,3M Unicem自粘结通用树脂水门汀粘接聚合瓷嵌体的微渗漏最小,效果最好。

Objective To evaluate the marginal microleakage and space between cavities and inlays adhered by 4 kinds of materials. Methods Twenty freshly extracted third molars were divided into 4 groups randomly, and inlay cavaties were made. Ceramage inlays were adhered by 3M Unicem, DMG PermaCem, 3M RelyX Luting and CX-HB glassionomor. All specimens were stained with fuchcin and cut The depth of dye penetration and marginal gap were measured with three-dimensional microscope. Resuits No statistical difference in fitness was demonstrated among all the groups （ P 〉 0.05 ）. Inlays adhered by 3M Unicem had the least microleakage while the group used CX-HB glassionomor had the biggest one. There was no statistical difference between the DMG PermaCemand and 3M RelyX Luting groups（ P 〉 0.05 ）, but there was statistical difference compared with other two groups（ P 〈 0.01 ）. Conclusion Among 4 kinds of materials, 3M Unicem offer the best adhesion with least microleakage.