[牙本质玷污层特性对自酸蚀树脂水门汀粘结强度的影响]

[Influence of the dentin smear layer trait on the bond strength of the self-adhesive resin cements].

作者信息

Liu Qing, Yang Yu-Qiong, Nie Rong-Rong, Meng Xiang-Feng

机构信息

Dept. of Prothodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing 210008, China.

出版信息

Hua Xi Kou Qiang Yi Xue Za Zhi. 2018 Dec 1;36(6):619-622. doi: 10.7518/hxkq.2018.06.007.

DOI:10.7518/hxkq.2018.06.007

PMID:30593106

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7039790/

Abstract

OBJECTIVE

This work aimed to evaluate the influence of smear layer on the bonding effectiveness and durability of the self-adhesive resin cements to dentin.

METHODS

A total of 48 fresh caries-free third molars with exposed dentin surface were divided into two groups. The dentin surfaces were treated using a standard grit diamond bur (group A) or further polished using a fine grit diamond bur (group B) and then bonded with either of the two self-adhesive resin cements, namely, Clearfil SA Cement (CSA, Kuraray) and Multilink Speed (MS, Ivoclar Vivadent). After 24 h or 2-year water storage, a microtensile bond strength test was performed.

RESULTS

In group A, the dentin surface was rough, the smear layer was thick, and the dentin tubule orifice detritus showed low embolism value. In group B, the dentin surface roughness decreased, the embolism proportion increased, and the smear layer became thin. The initial bonding strengths of CSA and MS in group A were significantly lower than those in group B (P<0.05). The bonding strengths of CSA and MS significantly decreased after two years of water storage (P<0.05). For CSA, the bond strength of group B was significantly lower than that of group A (P<0.05). For MS, the differences in the bonding strength between groups A and B were insignificant (P>0.05).

CONCLUSIONS

The properties of the smear layer and the types of self-adhesive resin cement used affected the bond strength and durability.

摘要

目的

本研究旨在评估玷污层对自粘结树脂水门汀与牙本质粘结效果及耐久性的影响。

方法

选取48颗新鲜、无龋坏且牙本质表面暴露的第三磨牙，分为两组。一组使用标准粒度的金刚砂车针处理牙本质表面（A组），另一组使用细粒度金刚砂车针进一步打磨（B组），然后分别用两种自粘结树脂水门汀，即Clearfil SA Cement（CSA，可乐丽公司）和Multilink Speed（MS，义获嘉伟瓦登特公司）进行粘结。在储存24小时或2年后进行微拉伸粘结强度测试。

结果

A组牙本质表面粗糙，玷污层厚，牙本质小管口碎屑栓塞值低。B组牙本质表面粗糙度降低，栓塞比例增加，玷污层变薄。A组中CSA和MS的初始粘结强度显著低于B组（P<0.05）。储存两年后，CSA和MS的粘结强度显著降低（P<0.05）。对于CSA，B组的粘结强度显著低于A组（P<0.05）。对于MS，A组和B组之间的粘结强度差异不显著（P>0.05）。