Dikmen B, Tarim B
Department of Restorative Dentistry, Istanbul Medipol University Faculty of Dentistry, Istanbul, Turkey.
Department of Restorative Dentistry, Istanbul University Faculty of Dentistry, Istanbul, Turkey.
Niger J Clin Pract. 2018 Mar;21(3):280-286. doi: 10.4103/njcp.njcp_282_17.
The aim of this study was to determine the influence of irrigants on bond strength of adhesive systems.
Superficial dentin surfaces of 60 extracted molars were divided into 15 groups, according to irrigants and adhesives. In the control groups, surfaces were irrigated with distilled water. In experimental groups, sodium hypochlorite (NaOCl), ethylenediaminetetraacetic acid (EDTA) + NaOCl, chlorhexidine (CHX), and NaOCl + sodium ascorbate were used as irrigants. Resin composites were then built up using Single Bond, Clearfil SE Bond, and Xeno 3 as adhesives. The microtensile bond strength of groups was determined. Data were statistically analyzed by two-way analysis of variance (ANOVA), one-way ANOVA, and the Bonferroni test.
NaOCl reduced bond strength of Single Bond and Clearfil SE Bond (P < 0.01). For all adhesive systems, EDTA + NaOCl-treated groups exhibited lower bond strength than control groups (P < 0.01). CHX decreased bond strength of Single Bond (P < 0.01). Application of sodium ascorbate improved compromised bond strength to NaOCl-treated dentin (P < 0.01).
Different irrigants had several effects on bonding of different adhesives. Sodium ascorbate after NaOCl could restore compromised bond strengths.
本研究旨在确定冲洗剂对粘结系统粘结强度的影响。
根据冲洗剂和粘结剂将60颗拔除磨牙的牙本质表面分为15组。对照组用蒸馏水冲洗表面。实验组分别使用次氯酸钠（NaOCl）、乙二胺四乙酸（EDTA）+NaOCl、洗必泰（CHX）以及NaOCl+抗坏血酸钠作为冲洗剂。然后分别使用单组分粘结剂（Single Bond）、Clearfil SE粘结剂和Xeno 3粘结剂来构建树脂复合材料。测定各组的微拉伸粘结强度。数据采用双向方差分析（ANOVA）、单向ANOVA和Bonferroni检验进行统计学分析。
NaOCl降低了单组分粘结剂（Single Bond）和Clearfil SE粘结剂的粘结强度（P<0.01）。对于所有粘结系统，EDTA+NaOCl处理组的粘结强度均低于对照组（P<0.01）。CHX降低了单组分粘结剂（Single Bond）的粘结强度（P<0.01）。抗坏血酸钠的应用提高了经NaOCl处理的牙本质受损的粘结强度（P<0.01）。
不同的冲洗剂对不同粘结剂的粘结有多种影响。NaOCl处理后使用抗坏血酸钠可恢复受损的粘结强度。
