表面清洁方法对根管封闭剂污染牙本质与复合树脂之间粘结强度的影响。

Effect of surface cleaning methods on bond strength between canal sealer-contaminated dentin and composite resin.

作者信息

Tonga Gülşah, Uçar Fatih, Döken Tunahan, Özlü Ahmet

机构信息

Faculty of Dentistry, Department of Restorative Dentistry, Tokat Gaziosmanpasa University, Tokat, Turkey.

Faculty of Dentistry, Department of Endodontics, Afyonkarahisar University of Health Sciences, Afyonkarahisar, Turkey.

出版信息

BMC Oral Health. 2025 Jul 2;25(1):1046. doi: 10.1186/s12903-025-06480-7.

DOI:10.1186/s12903-025-06480-7

PMID:40604772

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12224686/

Abstract

BACKGROUND

Sealer residues on dentin can affect bonding to restorative materials. This study aimed to evaluate the effect of different surface cleaning protocols on the cleaning efficiency and microtensile bond strength of composite resin to dentin contaminated with root canal sealer.

METHODS

A total of 58 teeth were used in the study (36 for µTBS and 22 for SEM-EDX). Dentin surfaces were exposed and contaminated with an epoxy resin-based sealer (AH Plus) or a bioceramic-based sealer (T-endo Bioserra). Four cleaning methods were examined: dry cotton pellet, cotton pellet with 75% ethanol, surfactant-based cleaner (Katana™ Cleaner), and 37.5% orthophosphoric acid. Control samples had no sealer or cleaning method. Dentin surfaces were bonded with universal adhesive (Scotchbond Universal) and restored with resin composite (Filtek™ Z250). Specimens were divided into subgroups to compare bond strength before and after aging. Bond strength testing was performed using the microtensile bond strength (µTBS) testing. Two teeth from each group were used for SEM and EDX to evaluate cleaning efficiency, and zinc/zirconium percentages were measured to indicate the remaining filler.

RESULTS

Bioserra contaminated groups exhibited smaller µTBS values than AH Plus contaminated groups. These values were significant in dry cotton pellet/immediate, ethanol/aged, and Katana/ immediate groups (p˂0.05). Artificial aging decreased µTBS in all groups. This effect was significant in Bioserra/ethanol, AH Plus/Katana™, and Bioserra/phosphoric acid groups (p˂0.05). The lowest µTBS was observed in the dry cotton /Bioserra/aged group and the highest in the phosphoric acid/Bioserra/immediate group.

CONCLUSIONS

Dry and ethanol-impregnated cotton pellet methods are ineffective in removing sealers or increasing bond strength. Katana™ Cleaner and phosphoric acid cleaning effectively cleans and improves bond strength for epoxy and bioceramic sealers.

摘要

背景

牙本质上的封闭剂残留会影响与修复材料的粘结。本研究旨在评估不同表面清洁方案对复合树脂与受根管封闭剂污染的牙本质的清洁效率和微拉伸粘结强度的影响。

方法

本研究共使用了58颗牙齿（36颗用于微拉伸粘结强度测试，22颗用于扫描电子显微镜-能谱分析）。暴露牙本质表面，并用环氧树脂基封闭剂（AH Plus）或生物陶瓷基封闭剂（T-endo Bioserra）进行污染。研究了四种清洁方法：干棉球、蘸75%乙醇的棉球、表面活性剂基清洁剂（Katana™ Cleaner）和37.5%正磷酸。对照样本未使用封闭剂或清洁方法。牙本质表面用通用粘结剂（Scotchbond Universal）粘结，并用树脂复合材料（Filtek™ Z250）修复。将样本分成亚组以比较老化前后的粘结强度。使用微拉伸粘结强度（µTBS）测试进行粘结强度测试。每组取两颗牙齿用于扫描电子显微镜和能谱分析以评估清洁效率，并测量锌/锆百分比以指示剩余的填料。

结果

Bioserra污染组的微拉伸粘结强度值低于AH Plus污染组。这些值在干棉球/即刻、乙醇/老化和Katana/即刻组中具有显著性差异（p˂0.05）。人工老化降低了所有组的微拉伸粘结强度。这种影响在Bioserra/乙醇、AH Plus/Katana™和Bioserra/磷酸组中具有显著性差异（p˂0.05）。在干棉球/Bioserra/老化组中观察到最低的微拉伸粘结强度，在磷酸/Bioserra/即刻组中观察到最高的微拉伸粘结强度。