Department of Restorative Dentistry, Faculty of Dentistry, Bezmialem Vakif University.
Department of Pedodontics, Faculty of Dentistry , Sağlık Bilimleri University.
Dent Mater J. 2019 Mar 31;38(2):218-225. doi: 10.4012/dmj.2017-428. Epub 2018 Dec 1.
The micro-tensile bond strengths (micro-TBSs) of four universal adhesive systems, applied in two different bonding techniques, to carries-affected dentin after Er:YAG laser irradiation were investigated. Twenty-four extracted human molars were divided into four groups, according to the adhesive systems used. Each group was subdivided into two subgroups, depending on the bonding method used: the etch-and-rinse procedure or self-etch procedure. The carious lesions were irradiated using an Er:YAG laser. Resin composites were used to restore the adhesive-treated dentin surfaces. After 2,500 thermal cycles, the vertical composite resin-dentin sticks obtained were subjected to micro-TBS tests. One tooth in each group was examined using scanning electron microscopy (SEM). There were statistically significant differences (p<0.001) in micro-TBS values between universal adhesives. The results of this study suggested that universal adhesives applied both with self and total etch technique can be used for adhesive restorations to caries-affected dentin after Er:YAG laser irradiation. If lasers are preferred as a caries removal method, choosing a dentin bonding agent containing MDP may be recommended in clinical practice due to the property of increasing the bonding strength.
研究了四种通用型粘接系统在两种不同粘接技术下，对 Er:YAG 激光照射后牙本质载体的微拉伸粘接强度（micro-TBS）。将 24 颗人离体磨牙根据所使用的粘接系统分为四组，每组再根据所使用的粘接方法（酸蚀冲洗法或自酸蚀法）分为两个亚组。用 Er:YAG 激光照射龋损。用树脂复合材料修复粘接处理后的牙本质表面。经过 2500 次热循环后，将获得的垂直复合树脂-牙本质棒进行微拉伸强度测试。每组中的一颗牙齿用扫描电子显微镜（SEM）进行检查。在通用型粘接剂的微拉伸强度值之间存在统计学上的显著差异（p<0.001）。本研究结果表明，Er:YAG 激光照射后，使用自酸蚀和全酸蚀技术的通用型粘接剂均可用于牙本质载体的粘接修复。如果激光被认为是一种去除龋坏的方法，由于增加粘接强度的特性，在临床实践中，可能推荐选择含有 MDP 的牙本质粘接剂。
