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自酸蚀处理剂/底胶和传统黏合剂对金属和陶瓷托槽黏结强度的影响。

Effect of self-etching primer/adhesive and conventional bonding on the shear bond strength in metallic and ceramic brackets.

机构信息

Orthodontic Department, TMSU, Tabriz, Iran.

出版信息

Med Oral Patol Oral Cir Bucal. 2012 Jan 1;17(1):e164-70. doi: 10.4317/medoral.17024.

DOI:10.4317/medoral.17024
PMID:21743430
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3448178/
Abstract

INTRODUCTION

Bracket debonding from the tooth surface is a common problem in fixed orthodontics. The aims of the present study were to assess the bond strength and failure sites in two ways of bonding technique, with metallic and ceramic brackets.

MATERIALS AND METHODS

One hundred premolars were assigned to 4 groups of 25 each: Group A, metallic brackets/conventional procedure; Group B, metallic brackets/Transbond XT; Group C, ceramic brackets/conventional procedure; and Group D, ceramic brackets/Transbond XT. Transbond XT composite paste was used for bracket bonding and cured by conventional light-cure device. Specimens were subjected to thermocycling. One week after bonding shearing force was applied to the bracket-tooth interface. Bonding failure site optically examined using a stereomicroscope under 10 × magnifications and scoring was done using the adhesive remnant index (ARI). Data were subjected to analysis of One-way variance, Tukey post hoc, Chi-square and Spearman's tests.

RESULTS

Mean bond strength (in MPa) were: group A=9.2, group B=8.5, group C=6.2 and group D=5.7. Bond strength differences between groups A and B, and between C and D were not significant, (p<0.0005). Insignificant difference found in ARI in all groups.

CONCLUSION

The bond strengths of metallic brackets were significantly higher than ceramic ones and the self-etching primer produce fewer bonds than the conventional method (clinically acceptable).A positive correlation found between changes in shearing bond strength and ARI.

摘要

简介

托槽从牙齿表面脱粘是固定正畸中常见的问题。本研究的目的是评估两种粘接技术（金属和陶瓷托槽）的粘接强度和失效部位。

材料与方法

将 100 颗前磨牙随机分为 4 组，每组 25 颗：A 组，金属托槽/常规程序；B 组，金属托槽/Transbond XT；C 组，陶瓷托槽/常规程序；D 组，陶瓷托槽/Transbond XT。Transbond XT 复合膏用于托槽粘接，并通过常规光固化设备固化。标本进行热循环。粘接后一周，在托槽-牙齿界面施加剪切力。使用立体显微镜在 10×放大倍数下检查粘接失效部位，并使用粘接残留指数（ARI）进行评分。数据采用单因素方差分析、Tukey 事后检验、卡方检验和斯皮尔曼等级相关检验进行分析。

结果

平均粘接强度（MPa）分别为：A 组 9.2，B 组 8.5，C 组 6.2，D 组 5.7。A 组和 B 组、C 组和 D 组之间的粘接强度差异无统计学意义（p<0.0005）。所有组的 ARI 差异无统计学意义。

结论

金属托槽的粘接强度明显高于陶瓷托槽，自酸蚀底漆的粘接强度低于传统方法（临床可接受）。剪切粘接强度和 ARI 的变化呈正相关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a0a/3448178/055e835b4be8/medoral-17-e164-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a0a/3448178/39b651f5229b/medoral-17-e164-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a0a/3448178/055e835b4be8/medoral-17-e164-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a0a/3448178/39b651f5229b/medoral-17-e164-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a0a/3448178/055e835b4be8/medoral-17-e164-g002.jpg

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