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J Korean Acad Pediatr Dent. 2010;37(1): 73-81.
OLOR STABILITY OF NEW SILORANE-BASED COMPOSITE RESIN: AN IN VITRO SPECTROPHOTOMETRIC STUDY
Yu-Jin Son, Hong-Keun Hyun, Young-Jae Kim, Jung-Wook Kim, Sang-Hoon Lee, Chong-Chul Kim, Se-Hyun Hahn, Ki-Taeg Jang
Department of Pediatric Dentistry, School of Dentistry, Seoul National University
Corresponding Author: Ki-Taeg Jang ,Tel: 02-2072-2682, Email: jangkt@snu.ac.kr
Received: August 21, 2009;  Accepted: December 23, 2009.
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ABSTRACT
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.
Keywords: Silorane | Composite resin | Discoloration | Spectrophotometer
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