摘要
目的通过研究流体树脂材料Constic的粘结性能,为临床上材料的使用提供实验支持。方法采用微拉伸测力仪测定流体树脂和与牙本质粘结微拉伸强度,以及流体树脂与临时冠材料粘结微拉伸强度,应用扫描电镜观察材料断裂界面微观形貌并判断断裂方式。结果流体树脂Constic和Z350 XT与牙本质的粘结微拉伸强度分别为(20.60±4.09)MPa,(31.23±5.66)MPa(t=7.943,P<0.05);流体树脂Constic与临时冠粘结微拉伸强度为(56.39±3.67)MPa,临时冠材料间粘结微拉伸强度为(58.27±4.32)MPa(t=1.388,P>0.05);断裂方式均以界面断裂为主。结论免酸蚀免粘结流体树脂Constic简化了口腔操作程序,能够满足临床的多种需要。
Objective To analyze bond properties of flowable resin Constic, and to provide laboratory evidence for the application of clinical material. Methods The micro-tensile bond strengths between flowable resin and dentin, flowable resin and temporary crown material were measured by micro tensile force meter. Surface morphology was studied by scanning electron, and the modes of failure were judged. Results The dentin micro-tensile bond strengths of Constic resin and Z350 XT were （20.60±4.09） MPa, （31.23±5.66） MPa, respectively（t = 7.943, P〈0. 05）. Temporary crown material bond strength of Constic was （56.39± 3.67） MPa, while bond strength between temporary crown material was （58.27±4.32） MPa （t = 1.388, P〉0.05）. The fracture sites of most samples were at interface. Conclusion As a self-etching and self-adhesive system, Constic simplifies clinical procedure, and it is potential for multiple clinical use.
作者
吴伟华
刘梅
章非敏
WU Weihua LIU Mei ZHANG Feimin.(Jiangsu Key Laboratory of Oral Diseases ,Department of Prosthodontics ,Affiliated Hospital of Stomatology , Nanjing Medical University, Nanjing 210029, China)
出处
《口腔医学》
CAS
2017年第7期603-606,共4页
Stomatology
基金
江苏高校优势学科建设工程资助(2014-37)
江苏省卫生计生委青年科研课题(Q201604)
关键词
流体树脂
微拉伸强度
粘结
flowable resin
micro-tensile bond strength
bond
