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首页> 外文会议>Conference on Lasers in Dentistry IX Jan 26-27, 2003 San Jose, California, USA >Optical properties and surface structure comparison of tooth whitening using four laser system and chemical action agents
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Optical properties and surface structure comparison of tooth whitening using four laser system and chemical action agents

机译：四种激光系统和化学作用剂对牙齿增白的光学性质和表面结构比较

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摘要

The purpose of the study is to evaluate the effect of various laser techniques for bleaching teeth in office vital whitening. Hydrogen peroxide (30 % concentration) and carbamide peroxide (10 % solution) were used for chemical activation of bleaching process. Extracted non-carious upper central incisors were exposed to laser radiation. Four different laser systems (Nd:YAG laser SHG, wavelength 0.53 μm, CTE:YAG laser, wavelength 2.7 μm, Nd:YAG laser, wavelength 1.06 μm, and alexandrite laser, wavelength 0.75 μm) were applied to accelerate the speed of the process. The end of chemical exposition was verified by the change of bleaching agent color. The color change was determined by stereomicroscope (Nikon SMZ 2T, Japan), the quality of surface structure was checked by scanning electron microscope Jeol (Japan). The speed of bleaching ranged from 630 s (chemical methods only) to 250-340 s (chemicals + alexandrite laser radiation). The Alexandrite laser application was considered an elective process to decrease the time of bleaching without modifying the surface.
机译：这项研究的目的是评估各种激光技术在办公室重要美白中漂白牙齿的效果。过氧化氢（浓度为30％）和过氧化脲（浓度为10％）用于漂白过程的化学活化。提取的非龋齿上中切牙暴露于激光辐射。应用了四个不同的激光系统（Nd：YAG激光SHG，波长0.53μm，CTE：YAG激光，波长2.7μm，Nd：YAG激光，波长1.06μm，以及变石激光器，波长0.75μm）来加快处理速度。通过漂白剂颜色的变化来验证化学暴露的结束。颜色变化通过立体显微镜（日本Nikon SMZ 2T）确定，表面结构的质量通过扫描电子显微镜Jeol（日本）检查。漂白速度范围为630 s（仅化学方法）至250-340 s（化学物+翠绿宝石激光辐射）。亚历山大宝石激光器的应用被认为是减少漂白时间而不改变表面的选择性工艺。

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