口腔疾病防治2016，Vol.24Issue(5)：280-283,4.DOI:10.12016/j.issn.2096-1456.2016.05.004
空气喷磨对乳牙树脂充填微拉伸强度的影响
The influence of the air abrasion on the resin filling microtensile bond strength of deciduous tooth
摘要
Abstract
Objective To investigate the influence of the air abrasion on the resin filling microtensile bond strength of deciduous tooth. Methods 24 primary molars were randomly divided into 2 groups. Crown enamel was removed to ex-pose dentin. Superficial occlusal dentin were prepared by air abrasion or high-speed dental bur. Two samples were select-ed from each group. One of them was directly observed by scanning electron microscope ( SEM) and the other was ob-served by SEM after etching. The rest of samples were restored with the composite resin. Microtensile test was used to ex-amine the microtensile bond strength. Results The microtensile bond strength of air abrasion group was ( 24. 470 ± 3. 194) Mpa, which was statistically higher than that of high-speed dental bur group ( 22. 294 ± 2. 268) Mpa ( P<0. 05) . The tooth prepared by air abrasion with etching showed the characteristic of "honeycomb" pattern in SEM micrograghs, while the tooth in the control group showed a shallow shape. Conclusion Air abrasion preparation can improve the mi-crotensile bond strength in dentin restorations with the composite resin.关键词
空气喷磨/微拉伸强度/乳磨牙/扫描电镜/树脂充填Key words
Air abrasion/Microtensile bond strength/Primary molar/SEM/Composite resin restoration分类
医药卫生引用本文复制引用
闫智奇,叶梅,颜学民..空气喷磨对乳牙树脂充填微拉伸强度的影响[J].口腔疾病防治,2016,24(5):280-283,4.基金项目
江苏省科技支撑计划项目(SBE201270282) （SBE201270282）
