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首页> 外文期刊>Journal of dentistry >A SEM evaluation of a 6% hydrogen peroxide tooth whitening gel on dental materials in vitro.
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A SEM evaluation of a 6% hydrogen peroxide tooth whitening gel on dental materials in vitro.

机译：在牙科材料上对6％过氧化氢牙齿美白凝胶进行SEM评估。

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OBJECTIVES: The aim of this study was to evaluate the effects of a novel 6% hydrogen peroxide gel on the surface morphology of dental gold, amalgam, porcelain and composite. METHODS: Admixed high-copper amalgam and hybrid resin composite specimens were prepared in extracted teeth using standard clinical procedures. Feldspathic porcelain and type III gold specimens were prepared in a mould using standard laboratory procedures. One half of the specimens were covered with nail varnish to serve as the control side, leaving the other half exposed. The specimens were treated with pooled whole saliva (1 h), followed by the peroxide gel (20 min), rinsing with water and returning to saliva. This cycling protocol was continued until a total of 28 treatments with the peroxide gel were completed. The samples were prepared for SEM. RESULTS: There were no observable differences at 200x and 2000x magnifications between the control and peroxide gel treated sides on any of the materials tested. CONCLUSIONS: There were no significant effects of the 6% hydrogen peroxide gel on the surface morphology of any of the dental materials tested.
机译：目的：本研究的目的是评估新型6％的过氧化氢凝胶对牙科金，汞合金，瓷器和复合材料表面形态的影响。方法：采用标准临床程序在拔牙后制备混合的高铜汞合金和混合树脂复合材料标本。使用标准实验室程序在模具中制备长石瓷和III型金标本。标本的一半用指甲油覆盖，作为对照，另一半暴露。标本先用全部唾液合并处理（1小时），然后用过氧化物凝胶处理（20分钟），用水冲洗并恢复唾液。继续该循环方案直到用过氧化物凝胶完成总共28次处理。样品准备用于SEM。结果：在任何测试的材料上，对照和过氧化物凝胶处理过的两面在200x和2000x放大倍数下均没有观察到差异。结论：6％过氧化氢凝胶对所测试的任何牙科材料的表面形态均无显着影响。

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