自粘接树脂水门汀与两种粗化处理的二硅酸锂陶瓷的粘接性能评价

摘要/Abstract

摘要： 摘要］目的：评价自粘接树脂水门汀与喷砂和氢氟酸酸蚀两种方式粗化处理的二硅酸锂陶瓷的粘接强度及耐久性。材料和方法：制作二硅酸锂瓷片183个，烧结后随机分为2组分别进行氢氟酸酸蚀和喷砂，随后根据粘接策略的不同分为RU（RelyX Unicem）、RU200(RelyXTM U200)以及RV(silane+RelyX Veneer) 3个亚组分别制作粘接试件。各组试件一半于37℃下水储24h，另一半进行20000次冷热循环，随后测试剪切粘接强度。氢氟酸酸蚀、喷砂及未进行粗化处理的陶瓷试件采用扫描电镜观察表面形貌。结果：氢氟酸组产生显著高于喷砂组的粘接强度（p<0.05）；单纯应用自粘接树脂水门汀组的粘接效果与传统树脂水门汀结合硅烷预处理组无统计学差别（p=0.057）；所有组的粘接强度在老化后均显著降低（p<0.05）。结论：氢氟酸酸蚀可以获得较氧化铝喷砂处理更佳的粘接效果；自粘接树脂水门汀在无需硅烷预处理的条件下用于二硅酸锂陶瓷的粘接可获得较好的粘接效果。

关键词: 关键词：二硅酸锂, 表面处理, 树脂水门汀, 粘接, 老化

Abstract: Abstract: Objective To evaluate the effects of self-adhesive resin cements and two different surface treatments on bonding strength and durability of lithium disilicate glass-ceramic. Methods 183 pieces of lithium disilicate plates were prepared and randomly divided into two main groups to receive sandblasting or HF etching. Each group was further divided into RU (RelyX Unicem), RU200 (RelyXTM U200) and RV (silane+RelyX Veneer) three subgroups to build bonded specimens. Then all the bonded specimens were divided into two groups to receive 24 h water storage or 20000 thermal cycles, followed by shear bond strength test and failure mode analysis. Microstructure was analyzed by a scanning electron microscope. Results SBS results revealed that etching with 9.5% HF resulted in a significant higher bond strength than sandblasting, and the three subgroups in each group achieved similar bond strength between resin and lithium disilicate glass-ceramic. After aging, the bond strength decreased and the proportion of adhesive failure in each group increased. Conclusions Acid etching yielded higher bond strength between resin and lithium disilicate than sandblasting; self-adhesive resin cement can achieve the desired bond strength and bond durability for bonding lithium disilicate without conditioning with silane.

Key words: Keywords: lithium disilicate, surface treatment, resin cement, bonding, aging

冯路何峰许少平. 自粘接树脂水门汀与两种粗化处理的二硅酸锂陶瓷的粘接性能评价[J]. , 2019, 39(11): 993-997.

参考文献 0

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