An Investigation about the Influence of Bleaching on Shear Bond Strength of Orthodontic Brackets and on Enamel Colour.

ISRN dentistry Pub Date : 2012-01-01 Epub Date: 2012-03-22 DOI:10.5402/2012/375849
Isabell Immerz, Peter Proff, Piero Roemer, Claudia Reicheneder, Andreas Faltermeier
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引用次数: 9

Abstract

The aim of the study was to investigate the effect of bleaching on the colouration of tooth enamel and shear bond strength of orthodontic ceramic brackets based upon current whitening practice. The bleaching and bonding techniques were performed on extracted bovine teeth for the investigation of their colorimetric spectrum and the adhesive bond strength on surface enamel. One group was designated as the control group with no pre-treatment. Another group was treated with a 45% hydrogen peroxide solution prior to bonding. The difference in colour was expressed as the Euclidian distance ΔE. The resulting shear bond strength was analyzed and evaluated by scores of Adhesion Remnant Index. Statistical analysis was performed using the Kruskall-Wallis and post-hoc test. The colorimetric analysis revealed statistically significant differences between original and bleached as well as bleached and debonded teeth setting off a blue colour shift. Furthermore, statistically there was no significant difference noted in bonding strength between non-treated surfaces and those treated with peroxide. It can be concluded that peroxide pre-treatment does result in colour differences of teeth. Bonding and debonding procedures seem to have no statistically significant influence on the enamel colour using current materials.

Abstract Image

Abstract Image

漂白对正畸托槽剪切结合强度及牙釉质颜色影响的研究。
本研究的目的是根据目前的美白实践,探讨漂白对牙釉质着色和正畸陶瓷托槽剪切结合强度的影响。对提取的牛牙进行了漂白和粘接技术,研究了其比色光谱和表面牙釉质的粘接强度。其中一组为对照组,不做任何预处理。另一组在粘接前用45%的过氧化氢溶液处理。颜色的差异表示为欧几里得距离ΔE。用粘着残余指数对剪切强度进行了分析和评价。采用Kruskall-Wallis和事后检验进行统计分析。比色分析显示,原始牙齿和漂白牙齿以及漂白牙齿和脱粘牙齿之间存在统计学上的显着差异,从而导致蓝色偏移。此外,在统计上,未处理的表面和过氧化氢处理的表面之间的结合强度没有显著差异。由此可见,过氧化氢预处理确实会造成牙齿颜色的差异。使用当前材料,粘接和脱粘过程似乎对牙釉质颜色没有统计学上的显著影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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