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KMID : 0358920100370010073
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Journal of the Korean Academy of Pedodontics
2010 Volume.37 No. 1 p.73 ~ p.81
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COLOR STABILITY OF NEW SILORANE-BASED COMPOSITE RESIN: AN IN VITRO SPECTROPHOTOMETRIC STUDY
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Son Yu-Jin
Hyun Hong-Keun
Kim Young-Jae
Kim Jung-Wook
Lee Sang-Hoon
Kim Chong-Chul
Hahn Se-Hyun
Jang Ki-Taeg
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Abstract
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The objective of this study was to evaluate the color stability of new silorane-based composite resin compared with methacrylate-based composite resins after immersion in 3 staining solutions. One silorane-based composite(Filtek P90) and 3 methacrylate -based composites(Filtek Z250, Filtek Z350, Tetric Ceram) were evaluated. Twenty disk-shaped specimens(10×2mm) of each of 4 composite resins were prepared. The specimens were then divided into 4 groups of 5 specimens each and immersed in 3 staining solutions(coffee, red wine, curry solution) or distilled water(control) for 28-day test period. Color of the specimens was measured with a spectrophotometer(Color Eye 7000A) using CIE L*a*b* color space relative to CIE standard illuminant D65 at baseline, 1day, 3days, 7days, 14days, 21days and 28days after staining. The color differences(ΔE*ab) were calculated. The results were obtained as follows ; 1. The mean color changes(ΔE*ab) of the composites were greatest in curry solution, then red wine, coffee and distilled water, in decreasing order. 2. The mean color changes(ΔE*ab) of the composites were greatest in Z350, Z250, Tetric Ceram and P90, in decreasing order.
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KEYWORD
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Silorane, Composite resin, Discoloration, Spectrophotometer
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