Abstract：
The aim of this study was to evaluate the effects of the application of universal adhesive in the etch-and-rinse (ER) strategy with a manual brush (MB) or rotary brush (RB) in adhesion to dentin impregnated (WB) or not (NB) with bioceramic sealer, at 24 h and 1 year. Eighty-eight crowns of bovine incisors were divided into four groups (n=22): WB-MB, WB-RB, NB-MB, NB-RB. After the restorative protocol, dentin penetrability was evaluated by confocal microscopy. Bond strength was evaluated by microtensile test. Data were analyzed using one-way ANOVA/Tukey tests (α=0.05). NB-RB and WB-RB exhibited greater extensions of resin tags in dentin. At 24 h, WB-RB and NB-MB showed the highest and lowest values of bond strength, respectively. At 1 year, WB-MB and WB-RB demonstrated the highest bond strength values. The RB increases the formation of resin tags and residues of bioceramic sealer provides higher bond strength in the ER strategy.
摘要：
这项研究的目的是评估使用手动刷（MB）或旋转刷（RB）在蚀刻和冲洗（ER）策略中应用通用粘合剂对牙本质浸渍（WB）或不使用生物陶瓷密封剂（NB），在24小时和1年。将88个牛门牙冠分为四组（n=22）：WB-MB，WB-RB,NB-MB,NB-RB。在恢复性协议之后，通过共聚焦显微镜评估牙本质的渗透性。通过微拉伸试验评价粘结强度。使用单向ANOVA/Tukey检验分析数据(α=0.05)。NB-RB和WB-RB在牙本质中表现出更大的树脂标签延伸。在24小时，WB-RB和NB-MB显示出最高和最低的粘结强度值，分别。在1年,WB-MB和WB-RB表现出最高的粘结强度值。RB增加树脂标签的形成,并且生物陶瓷密封剂的残余物在ER策略中提供更高的结合强度。
