Er∶YAG激光切割对牙本质粘接耐久性的影响

发布时间：2018-02-10 19:19

本文关键词： 超快激光及应用 Er∶YAG激光牙本质两步法自酸蚀剂粘接微剪切强度树脂　出处：《深圳大学学报(理工版)》2017年01期 　论文类型：期刊论文

【摘要】：采用Er∶YAG激光或快机切割牙本质,SE Bond粘接修复后浸水6个月,用微剪切实验测试评估两种切割方法对粘接效果的影响.20颗离体磨牙制备获40片牙本质切片,随机分为激光组(Er∶YAG激光切割,20片)和快机组(#600沙砾磨砂纸打磨,20片).每切片用SE Bond粘接8个树脂柱,在浸水24h、7 d和6个月后,依次用微剪切实验测试粘接强度.测试结果用one-way ANOVA和t-test统计分析(标准差为0.05).并采用走查扫描电镜观察粘接破折面形态.结果显示,激光切割牙本质粘接强度在浸水6个月后显著低于激光组浸水24 h和7 d后,且低于对照快机组的粘接强度.说明采用两步法自酸蚀粘接系统SE Bond在激光切割的牙本质上未获得长期稳定的粘接效果.
[Abstract]:Using Er: YAG laser cutting machine or dentin bonding repair, SE Bond after soaking for 6 months, evaluate the two methods of cutting effect on the bonding effect of.20 teeth molars were prepared by 40 dentin sections with micro shear test, were randomly divided into laser group (Er: YAG laser cutting, 20 fast unit (#600) tablets and grit abrasive paper grinding, 20). Each slice with SE Bond 8 adhesive resin column, immersion in water 24h, 7 d and 6 months, followed by the micro shear test. The bonding strength test results using one-way ANOVA and t-test statistical analysis (standard deviation 0.05). Go check and using scanning electron microscope bonding fracture surface morphology. The results show that the laser cutting of dentin bonding strength was significantly lower than that in the water after 6 months of immersion in laser group 24 h and 7 d, and lower than the bonding strength of control unit. The fast two step self etching adhesive system SE Bond in laser cutting tooth The bonding effect of long-term stability without nature.

【作者单位】：深圳大学光电工程学院;广东医学院附属深圳市南山区人民医院口腔科;日本东京医科齿科大学大学院;
【基金】：国家自然科学基金资助项目(61505112) 深圳市战略新兴产业发展专项资金资助项目(JCYJ20130402151227187) 深圳市南山区科技立项资助项目(南科研卫2015059)~~
【分类号】：R783.1

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