The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)
- Volume 35 Issue 2
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- Pages.344-356
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- 1997
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- 0301-2875(pISSN)
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- 2005-3789(eISSN)
SPECTROPHOTOMETRIC ANALYSIS OF THE EFFECT OF TOOTHBRUSHING ON EXTERNALLY STASHED IPS EMPRESS PORCELAIN
표면 처리 방법에 따라 칫솔질이 IPS Empress 도재의 외부 stain에 미치는 영향에 대한 분광 측색 방법적 분석
- Shin, Woo-Jin (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
- Jeon, Young-Sik (Department of Prosthodontics, College of Dentistry, Yonsei University) ;
- Han, Dong-Hoo (Department of Prosthodontics, College of Dentistry, Yonsei University)
- Published : 1997.07.01
Abstract
The purpose of this study was to evaluate the long term tooth-brushing effect on the color change of specially treated IPS Empress porcelain surface. Staining techique with blue stain and liquid was used. The surfaces of the specimen were treated with 5% and 10% Hydrofluoric acid, 50mm and 250mm alumina sandblast, and then blue stain and liquid were used for external stain. After 29,200, 58,400, 87,600, 116,200 brushing strokes (equivalent to 2, 4, 6, 8 years each), color changes of the stained layer were measured with spectrophotometer(CM-3500d, MINOLTA, Tolkyo, Japan). The result of this study was obtained as follows : 1. The color changes were great after 29,200 tooth brushing strokes in every group, but from 29,200 strokes to 116,800 strokes, there were no significant color changes in each group. (p>0.05) 2. The greastest color changes were observed in 5% HF treated group and the least color changes were observed in