天然胶原蛋白交联剂对 NaOCl 处理的牙髓腔牙本质粘结强度受损的疗效。

Efficacy of Natural Collagen Crosslinkers on the Compromised Adhesive Bond Strength to NaOCl-treated Pulp Chamber Dentin.

出版信息

J Adhes Dent. 2018;20(4):365-369. doi: 10.3290/j.jad.a40984.

DOI:10.3290/j.jad.a40984

PMID:30206579

Abstract

PURPOSE

To evaluate the efficacy of natural collagen crosslinkers on compromised adhesive bond strength to NaOCl-treated pulp chamber dentin.

MATERIALS AND METHODS

Mesial surfaces of the pulp chamber dentin of 120 extracted human molars were obtained. The dentin fragments were divided into six groups according to the protocols used: no treatment (negative control), sodium hypochlorite (NaOCl) for 30 min and final irrigation with 17% EDTA for 3 min (positive control). After treatment with NaOCl and EDTA, the dentin surfaces of the experimental groups were treated for 5 min with one of the following: grape seed extract (GSE), tannic acid (TA), green tea (GT), or n-acetyl cysteine (NAC). Half of the samples of each group were bonded with an etch-and-rinse (Single Bond; 3M Oral Care) and the other half using a self-etch (Scotchbond Universal; 3M Oral Care) adhesive. The restoration was completed with composite. The bonded specimens were sectioned to produce sticks and subjected to the microtensile bond strength test. Data were analyzed by two-way ANOVA and Tukey's HSD test (p < 0.05).

RESULTS

Both adhesives had similar bond strengths (p > 0.05). The NaOCl-treated group had significantly lower bond strength than the negative control (p < 0.05). The application of NAC did not recover compromised bonding (p > 0.05). On the other hand, GSE, TA and GT had significant reversal effects of the bond strengths to NaOCl-treated dentin (p < 0.05).

CONCLUSION

Compromised bonding of adhesives to NaOCl-treated dentin can be reversed by the application of either GSE, TA or GT.

摘要

目的

评估天然胶原交联剂对次氯酸钠处理牙髓腔牙本质粘结强度的影响。

材料与方法

获取 120 颗人磨牙近中牙髓腔牙本质的表面。根据所使用的方案，将牙本质碎片分为六组：无处理（阴性对照）、次氯酸钠（NaOCl）处理 30 分钟，最后用 17% EDTA 冲洗 3 分钟（阳性对照）。用 NaOCl 和 EDTA 处理后，实验组的牙本质表面用以下方法之一处理 5 分钟：葡萄籽提取物（GSE）、单宁酸（TA）、绿茶（GT）或 N-乙酰半胱氨酸（NAC）。每组的一半样本用酸蚀-冲洗（Single Bond；3M Oral Care）粘结，另一半用自酸蚀（Scotchbond Universal；3M Oral Care）粘结。用复合树脂完成修复。将粘结的样本进行切割，制成棒状，进行微拉伸粘结强度测试。数据采用双因素方差分析和 Tukey 的 HSD 检验（p < 0.05）进行分析。