Yurdagüven Haktan, Tanalp Jale, Toydemir Burcu, Mohseni Kambiz, Soyman Mübin, Bayirli Gündüz
Department of Operative Dentistry, Yeditepe University, Istanbul, Turkey.
J Endod. 2009 Sep;35(9):1259-63. doi: 10.1016/j.joen.2009.05.002. Epub 2009 Jun 28.
The purpose of this study was to evaluate the microtensile bond strength of a total etch (XP-Bond) and a self-etch (Clearfil SE Bond) adhesive system to dentine surfaces treated using endodontic irrigants.
Twenty-four freshly extracted third molars were used. After creating a smear layer on the coronal midthird portion of the crowns, the teeth were divided into three groups and surfaces were irrigated with distilled water, 5.25% NaOCl + 17% EDTA, and 1.3% NaOCl + BioPure MTAD, respectively. Each group was divided into two subgroups, and a self-etching adhesive and an etch-and-rinse adhesive were applied respectively. The teeth were restored with a composite material and sectioned to produce sticks for microtensile bond testing.
The microtensile bond strength of the MTAD + Clearfil SE group was found to be significantly lower than the microtensile bond strength of the distilled water + Clearfil SE Bond group and the NaOCl, EDTA, + Clearfil SE Bond group (p = 0.0001, p = 0.009).
Because of the significant reduction of Clearfil SE Bond to coronal dentine after MTAD application, an etch-and rinse adhesive such as XP-Bond may be preferred if this irrigant has been chosen during endodontic treatment.
本研究旨在评估全蚀刻（XP-Bond）和自蚀刻（Clearfil SE Bond）粘结系统与经牙髓冲洗剂处理的牙本质表面之间的微拉伸粘结强度。
使用24颗新鲜拔除的第三磨牙。在牙冠冠部中三分之一处形成玷污层后，将牙齿分为三组，分别用蒸馏水、5.25%次氯酸钠+17%乙二胺四乙酸（EDTA）以及1.3%次氯酸钠+BioPure MTAD冲洗表面。每组再分为两个亚组，分别应用自蚀刻粘结剂和酸蚀冲洗粘结剂。用复合材料修复牙齿并切片制成用于微拉伸粘结测试的试件。
发现MTAD + Clearfil SE组的微拉伸粘结强度显著低于蒸馏水 + Clearfil SE Bond组和次氯酸钠、EDTA + Clearfil SE Bond组的微拉伸粘结强度（p = 0.0001，p = 0.009）。
由于应用MTAD后Clearfil SE Bond与冠部牙本质的粘结强度显著降低，如果在牙髓治疗中选择了这种冲洗剂，那么诸如XP-Bond之类的酸蚀冲洗粘结剂可能更为可取。
