Araújo Cíntia Tereza Pimenta, Prieto Lúcia Trazzi, Abuna Gabriel, Rocha Ricardo Lopes, Coppini Erick Kamiya, Oliveira Dayane Carvalho Ramos Salles, Paulillo Luís Alexandre Maffei Sartini
Gen Dent. 2019 Nov-Dec;67(6):e1-e5.
The objective of this study was to evaluate the effect of the simplified ethanol wet-bonding technique on luting of posts to intraradicular dentin. The effect was assessed by push-out bond strength testing and confocal laser scanning microscopic analysis. Thirty endodontically treated roots were distributed into 3 groups (n = 10): water wet-bonding; stepwise ethanol wet-bonding; and simplified ethanol wet-bonding. After cementation of the posts, the roots were sectioned. Specimens were stored for 24 hours or 1 year before they were stressed to failure. Specimens from each group were processed for microscopic analysis. Data were analyzed using a 2-way analysis of variance and the Tukey test (α = 0.05). Statistically significant differences in push-out bond strength values were observed between the technique groups (P < 0.001) and between the storage periods (P = 0.009). The bond strength results in the group bonded using the simplified ethanol wet-dehydration approach did not differ from those in the group bonded using the stepwise ethanol technique at either storage time interval (P > 0.05). From 24 hours to 1 year, there was a similar decrease in bond strength for specimens prepared with the simplified and stepwise techniques. The microscopic results confirmed that ethanol wet-bonding technique improved the quality of the interface. The simplified ethanol wet-dehydration protocol achieved bond strengths and stability over time that were similar to those obtained with the stepwise ethanol technique and may be considered an alternative strategy to accomplish resin cement-root dentin bonding.
本研究的目的是评估简化乙醇湿粘结技术对桩与根管内牙本质粘结的效果。通过推出粘结强度测试和共聚焦激光扫描显微镜分析来评估该效果。将30颗经根管治疗的牙根分为3组（n = 10）：水湿粘结组；逐步乙醇湿粘结组；简化乙醇湿粘结组。桩粘结后，将牙根进行切片。在施加破坏应力之前，标本分别储存24小时或1年。对每组标本进行微观分析。使用双向方差分析和Tukey检验（α = 0.05）对数据进行分析。在技术组之间（P < 0.001）和储存期之间（P = 0.009）观察到推出粘结强度值存在统计学显著差异。在两个储存时间间隔内，使用简化乙醇湿脱水方法粘结的组的粘结强度结果与使用逐步乙醇技术粘结的组的结果没有差异（P > 0.05）。从24小时到1年，使用简化技术和逐步技术制备的标本的粘结强度有类似程度的下降。微观结果证实乙醇湿粘结技术改善了界面质量。简化乙醇湿脱水方案随着时间推移实现的粘结强度和稳定性与逐步乙醇技术获得的结果相似，可被视为实现树脂水门汀与牙根牙本质粘结的一种替代策略。
