The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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EFFECT ON THE COLOR STABILITY OF STAINED PORCELAIN DUE TO TOOTH BRUSHING

잇솔질이 도재의 색 안정성에 미치는 영향

  • Lee, Im-Gi (Department of Prosthodontics and Institute of Oral Bio Science, College of Dentistry, Chonbuk National University) ;
  • Jeong, Jun-Oh (Department of Prosthodontics and Institute of Oral Bio Science, College of Dentistry, Chonbuk National University) ;
  • Park, Charn-Woon (Department of Prosthodontics and Institute of Oral Bio Science, College of Dentistry, Chonbuk National University)
  • 이임기 (전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소) ;
  • 정준오 (전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소) ;
  • 박찬운 (전북대학교 치과대학 치과보철학교실 및 구강생체과학연구소)
  • Published : 2002.04.01
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Abstract

This study is going to compare the degree of color change which occurs in the following two cases of the factors which cause the color change of extra-staining, one is during glazing by the dental technician, the other is tooth brush abrasion which makes the biggest influence on color change. To compare the degree of color change before and after glazing, a sample was made with vintage incisal porcelain No. 59 OPAL(Shofu Inc, Japan), after that it was painted with three colors of porcelain stainers, then the degree of color was measured with a spectrophometer(Model Chromaview 300, Spectoron Tech Co. Korea) after it had been treated with firing only and glazing after firing 40,000-cycle and 80,000-cycle of tooth brush abrasion test were carried out in order to simulate the brushing effect of 4 years and 8 years by using the abrasion tester. The colors were measured before the test, and after the 40,000-cycle and 80.000-cycle operations and the surfaces were examined by SEM. The results of this study were as follows ; 1. The color change before and after glazing was not great enough to have a clinical significance but the orange color was changed more significantly statistically than the blue and light brown(p<0.05). 2. In the case of the color change of stained porcelain by tooth brushing, carrying out staining and glazing with two-times firings resulted in statically less color change than one firing only(p<0.05). 3. In the case of the difference in the stainer's color, the orange color which has higher chroma was statically more sensitive than the blue color(p<0.05) 4. In the case of the color change after the 80,000-cycle abrasion, all showed color change when there was one firing and the orange stainer showed some color change with clinical significance when firings were done two times.

Keywords

References

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