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  

Effects of self-adhesive resin cements and two different surface treatments on resin bonding of lithium disilicate glass-ceramic

作　　者：冯路 何峰[2] 许少平[3] FENG Lu;HE Feng;XU Shaoping(Elud Stomatologic Clinic in Taizhou,Taizhou 225300,China)

机构地区：[1]泰州市海陵爱路德口腔诊所,江苏泰州225300 [2]南京医科大学附属口腔医院特诊科,江苏南京210029 [3]泰州职业技术学院医学技术学院,江苏泰州225300

出　　处：《口腔医学》2019年第11期993-997,共5页Stomatology

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。方法制作二硅酸锂瓷片183枚,烧结后其中180枚随机均分为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^TM Unicem)、RU200(RelyX^TM U200)以及RV(silane+RelyX^TM Veneer)3个亚组分别制作粘接试件。各组试件一半于37℃下水储24 h,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(各1枚)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。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 One hundred and eighty-three pieces of lithium disilicate plates were prepared and 180-of them were randomly divided into two groups to receive sandblasting or HF etching.Each group was further divided into RU(RelyX^TM Unicem),RU200(RelyX^TM U200)and RV(silane+RelyX^TM 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.Microstructures of the ceramic specimens untreated or treated by HF etching and sandblasting were 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.Conclusion Acid etching yields 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.

关 键 词：二硅酸锂 表面处理 树脂水门汀 粘接 老化 

分 类 号：R783.1[医药卫生—口腔医学]