一种新型通用型牙本质粘结剂对牙本质粘结强度的体外评价  

Evaluation of bond strength of a new universal adhesive to dentin in vitro

作　　者：米长江[1,2,3] 喻洁[1,2] 朱虹倩 朱万春[3] 米方林[3] 刘兴容[1,2] 

机构地区：[1]泸州医学院附属口腔医院 [2]泸州医学院口颌面修复重建和再生实验室,四川泸州646000 [3]川北医学院附属医院口腔科,四川南充637000

出　　处：《川北医学院学报》2015年第1期56-59,共4页Journal of North Sichuan Medical College

基　　金：四川省教育厅基金(11ZB188)

摘　　要：目的:评价一种新型通用型牙本质粘结剂(All Bond Universal,ABU)对牙本质的粘结强度,为临床选择合适的粘结剂提供参考依据。方法:选取人体12颗无龋坏磨牙,磨除牙釉质暴露牙本质面,分别用酸蚀-冲洗法和一步自酸蚀法使用All Bond Universal粘结剂,在其上堆砌树脂,并与酸蚀-冲洗粘结剂Prime&Bond NT(PBN)和一步法自酸蚀粘结剂G Bond(GB)进行对照。试样于37℃去离子水储存24 h后,每颗牙齿垂直于粘结面制备出0.81 mm2的树脂/牙本质试件,进行牙本质粘结微拉伸强度(μTBS)测试。结果:通用型牙本质粘结剂All Bond Universal在两种粘结方法下,其粘结力均高于对照组;就All Bond Universal本身而言,酸蚀-冲洗技术可以提高其粘结强度。结论:这种新型牙本质粘结剂具有较高的粘结强度,并且酸蚀-冲洗技术能提高其粘结力。Objective： The aim of this study was to evaluate the microtensile bond strength（ μTBS） of a new universal adhesive（ All Bond Universal,ABU） applied in two different etching modes（ i. e. self-etch and etch-and-rinse）. It provides a referent data for choosing a proper adhesive of clinical application. Methods： The superficial occlusal dentins of 12 sound human molars were removed and the exposed surfaces were treated with universal adhesives： All-Bond Universal in self-etch and etch-and-rinse mode. One etch-andrinse adhesive（ Prime Bond NT,PBU） and one one-step self-etch adhesive（ G bond,GB） were applied in additional teeth as control. After composite build up,the specimens were stored for 24 h in distilled water at 37℃. Composite / dentine beams were prepared（ 0. 81mm2） and microtensile test was performed. Results： The dentin bond strength of the All Bond Universal adhesive（ both etch-andrinse and self-etch） is superior to its control groups. And etch-and-rinse application mode has higher μTBS than its self-etch application mode. Conclusion： The bond strength of All Bond Universal adhesive to dentin is higher than Prime Bond NT and G bond. And application of an etching step prior to All Bond Universal improves its bond strength.

关 键 词：新型通用型粘结剂 微拉伸强度 牙本质 

分 类 号：R783.1[医药卫生—口腔医学]