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Evaluation of the color stability of light cured composite resins according to the resin matrices / 대한치과재료학회지
Korean Journal of Dental Materials ; (4): 109-120, 2019.
Article in Korean | WPRIM | ID: wpr-750283
ABSTRACT
The purpose of this study was to evaluate the color stability of light cured composite resins according to the resin matrices. Three kinds of resin matrices such as Bis-GMA (Venus® Diamond; VD), Silorane (FiltekTM P90; P90), and Ormocer (Admira; Ad) were selected. Each of them were used to prepare 30 specimens. The initial CIE L*a*b* values were measured by means of a Spectrophotometer (NF999, Nippon Denshoku, Japan). For accelerated aging process, the specimens were immersed in a circulating water bath with distilled water at 60℃. Spectrophotometric analyses were made after immersion of 8, 16, 24, 41 days and the color difference (ΔE*) was calculated. The L* value increased compared with initial L* value. VD had the greatest L* value change and Ad had the smallest L* value change (p<0.05). Ad had the greatest a* value change and VD had the smallest a* value change (p<0.05). The b* value of P90 increased steadily in positive value (+)(p<0.05). ΔE* of Ad had the smallest value and that of P90 had the greatest change with time. According to this study, the value of light cured composite resins was increased with water sorption and color of those changed into greenish and yellowish. And according to the evaluation of color stability, Ad with Ormocer as resin matrices had the best color stability with time in oral environment and P90 with Silorane as resin matrices had the lowest color stability with time. And VD had the greatest initial ΔE*.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Baths / Aging / Water / Bisphenol A-Glycidyl Methacrylate / Diamond / Composite Resins / Organically Modified Ceramics / Silorane Resins / Immersion Language: Korean Journal: Korean Journal of Dental Materials Year: 2019 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Baths / Aging / Water / Bisphenol A-Glycidyl Methacrylate / Diamond / Composite Resins / Organically Modified Ceramics / Silorane Resins / Immersion Language: Korean Journal: Korean Journal of Dental Materials Year: 2019 Type: Article