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Effect of bleaching on pulpless discolored teeth.

漂白对无髓变色牙齿的影响。

基本信息

批准号：
20592234
负责人：
HISAMITU Hisashi
金额：
$ 2.75万
依托单位：
Showa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2008
资助国家：
日本
起止时间：
2008 至 2010
项目状态：
已结题

项目摘要

The bleaching was performed on the surface of shell of the chicken egg with dark blown color, using Night White Excel which was based on urea peroxide or Pyrenees which was based on hydrogen peroxide. Halogen light (PENCURE) and KTP laser were used to occurring bleaching reaction. Halogen light and KTP laser were used the bleaching respectively in experiment 1. KTP laser was irradiated with 3W to the egg shell surface for 1 minute and 30 seconds, 3 minutes, and 5 minutes 10 minutes respectively after bleaching reagent application. Halogen light was also irradiated on the shell surface for 1 minute 30 seconds, 3 minutes, 5 minutes 10 minutes respectively same as KTP laser. After irradiation, all specimens were stored at 37 degree for half day and analyzed colored change. In experiment 2, halogen light and KTP laser were combined use together. The irradiated procedures of the halogen light and KTP laser were same as experiment 1. All specimens were also analyzed colored change. As a results, the occurring of the bleaching effect was observed more than three minutes with KTP laser irradiation after Night Excel bleaching agent application in experiment 1. On the other hand, the bleaching effect was confirmed over five minutes with KTP laser irradiations in using reagent of Pyrenees. In halogen light irradiation specimens, the bleaching effect was shown more than one minutes and 30 second irradiation both methods of Night White Excel and Pyrenees application. In experiment 2, the bleaching effect was also appeared more than one minute and 30 second irradiation both methods of Night White Excel and Pyrenees application. Furthermore the effectible was more clearly after 3 minutes irradiation. The difference of the order of irradiating the halogen light and the KTP laser was not influence of the affectability for the bleaching.

使用基于过氧化脲的Night White Excel或基于过氧化氢的Pyrenees对深色吹色的鸡蛋壳表面进行漂白。使用卤素灯（PENCURE）和KTP激光来发生漂白反应。实验1分别采用卤素灯和KTP激光进行漂白。施加漂白剂后，用3W的KTP激光分别照射蛋壳表面1分30秒、3分钟、5分钟10分钟。与KTP激光相同，卤素光也分别照射在壳表面1分30秒、3分钟、5分钟、10分钟。照射后，所有标本在37度下保存半天并分析颜色变化。实验2中，卤素灯和KTP激光结合使用。卤素灯和KTP激光的照射程序与实验1相同。所有样品还分析了颜色变化。结果，在实验1中施用Night Excel漂白剂后，通过KTP激光照射超过3分钟，观察到漂白效果的出现。另一方面，在使用Pyrenees试剂时，通过KTP激光照射超过5分钟，确认了漂白效果。在卤素光照射样品中，Night White Excel 和 Pyrenees 应用方法均在照射 1 分钟和 30 秒以上时显示出漂白效果。在实验2中，使用Night White Excel和Pyrenees两种方法照射1分30秒以上也都出现了漂白效果。而且照射3分钟后效果更加明显。卤素光和KTP激光的照射顺序的不同并不影响对漂白的影响。