Development of in vitro tooth staining model and usage of catalysts to elevate the effectiveness of tooth bleaching

Bor Shiunn Lee, Shih Hao Huang, Yu Chih Chiang, Yu Shan Chien, Chung Yuan Mou, Chun Pin Lin

研究成果: 雜誌貢獻文章同行評審

38 引文 斯高帕斯(Scopus)


Objectives: Whole blood or tea was frequently used to stain the teeth for measuring the effectiveness of different bleaching materials. However, the components of blood or tea cannot be quantitatively determined and variability might exist among different brands of tea. The purpose of this study was to develop a reproducible in vitro tooth-staining model to simulate the intrinsic discoloration of teeth and evaluate the ability of two catalysts to enhance the bleaching activity of H2O2. Methods: Rhodamine B, Orange II, Fe(III) phthalocyanine, and tea were used to stain the tooth specimens for 4-72 h and subsequently bleached by H2O2 for 4-72 h. The process was photographed using a digital stereoscopic microscope and a digital camera. The image was transformed to get L*, a*, b* values of CIE Lab system with image processing software. The catalytic ability of light irradiation plus addition of Fe/Sodium-Y or Mn/Sodium-Y for specimens stained by Orange II was evaluated in test tubes and in extracted tooth model. Results: The color of specimens stained by Rhodamine B could not be sufficiently recovered after bleaching by H2O2. In addition, the reaction of Fe(III) phthalocyanine with H2O2 in test tubes was too fast to be monitored. Light activation plus use of Fe/Sodium-Y or Mn/Sodium-Y could significantly accelerate the bleaching efficiency of H2O2. Significance: Orange II was the most appropriate dye for tooth staining among the dyes used in this study. Addition of Fe/Sodium-Y or Mn/Sodium-Y plus light irradiation could elevate the bleaching efficacy of H2O2 for those specimens stained by Orange II.

頁(從 - 到)57-66
期刊Dental Materials
出版狀態已發佈 - 1月 2008

ASJC Scopus subject areas

  • 一般材料科學
  • 一般牙醫學
  • 材料力學


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