贻贝黏附蛋白对全酸蚀粘接系统即刻粘接强度的影响  

Influence of mussel adhesive proteins on instant bonding strength of total etching adhesive system

作　　者：窦祈[1] 张卓然[1] 贾文敏[1] 惠光艳[1] 

机构地区：[1]济南军区青岛第一疗养院,266071

出　　处：《中国疗养医学》2017年第1期11-13,共3页Chinese Journal of Convalescent Medicine

基　　金：青岛市市南区公共领域科技支撑计划项目(2014-14-047-SW)

摘　　要：目的本研究尝试将贻贝黏附蛋白(mussel adhesive proteins,MAPs)引入两步法全酸蚀粘接系统,并评价其对即刻粘接强度的影响。方法收集10颗离体第三磨牙并切割暴露牙本质,将暴露的牙本质平均分为两个象限制备粘接试件,引入MAPs预处理脱矿牙本质的为实验组,未引入的为对照组。试件在万能试验机下进行微拉伸粘接强度测试评估样本即刻粘接强度。结果实验组微拉伸强度为(28.40±6.26)MPa,对照组微拉伸强度为(43.20±7.23)MPa,实验组粘接样本的微拉伸粘接强度显著低于对照组。结论对于全酸蚀粘接系统,单纯在粘接剂使用前涂布MAPs预处理牙本质会降低即刻粘接强度。Objective To aim to introduce mussel adhesive proteins（MAPs） to the two-step total etching adhesive system and evaluate its effect on the instant bonding strength. Methods Ten detached pieces of third molar were col- lected and cut to expose their occlusal dentin surfaces, which were then further cut into 2 equal quadrants for bonding test piece preparation.MAPs pretreated demineralized dentines were taken as experimental group and non-MAPs pre- treated demineralized dentines were taken as control group.The test pieces were conducted to assess micro-tensile bond strength by universal testing machine so as to assess the instant bonding strength.Results The micro-tensile bond strength in the experiment group was（28.40 ± 6.26）MPa,while in the control group it was（43.20 ± 7.23）MPa.The micro-tensile bond strength in the experiment group pretreated by MAPs was significantly lower than that in the con- trol group.Conclusion Pretreatment of dentin by mere MAPs coating before adhesive application can reduce the in- stant bonding strength in total etching adhesive system.

关 键 词：贻贝黏附蛋白 牙本质 粘接强度 

分 类 号：R783.1[医药卫生—口腔医学]