여러 복합레진에서 수분 흡수에 의한 색변화에 연마가 미치는 영향
Effect of polishing methods on color change by water absorption in several composite resins
김혜진, 김미연, 송병철, 김선호, 김정희,
소속 상세정보
김혜진 ( Kim Hye-Jin ) - Veterans Health Service Medical Center Department of Conservative Dentistry
김미연 ( Kim Mi-Yeon ) - Veterans Health Service Medical Center Department of Conservative Dentistry
송병철 ( Song Byung-Chul ) - Veterans Health Service Medical Center Department of Conservative Dentistry
김선호 ( Kim Sun-Ho ) - Veterans Health Service Medical Center Department of Conservative Dentistry
김정희 ( Kim Jeong-Hee ) - Veterans Health Service Medical Center Department of Conservative Dentistry
KMID : 1004520190350010001
Abstract
Purpose: The aim of this study was to evaluate the influence of polishing methods on the color stability of composite resins.
Materials and Methods: Two bulk-fill and four conventional resin composites were filled in cylindrical molds (6 mm diameter, 4 mm height) and light-cured. The specimens were stored in 34°C distilled water for 24 h. Spectrophotometer was used to determine the color value according to the CIE L*a*b* color space. Each group was divided into three groups according to polishing methods (n = 5). Group 1 was control group (Mylar strip group), group 2 was polished with PoGo, and group 3 was polished with Sof-Lex Spiral wheels. Color evaluation was performed weekly for 4 weeks after immersion in 34°C distilled water. The results were analyzed by generalized least squares method (P < 0.05).
Results: Generalized least squares analysis revealed that Sof-Lex Spiral wheels group showed the significantly lower ΔE values compared to PoGo and control group (P < 0.05). The ΔE values of polished group showed the significantly lower than the ΔE values of unpolished group (P < 0.05). Regarding color changes of composite resins, there was no significant difference between the ΔE values of Filtek Z250 and Filtek Z350 XT Universal restorative in all time intervals (P < 0.05). Tetric N-Ceram Bulk Fill showed the significantly lower ΔE values compared to other composite resins in 1, 2, 3 weeks (P < 0.05).
Conclusion: Within the limitations of this study, polishing methods influence the color stabilities of composite resins. The group polished with Sof-Lex Spiral Wheels showed more resistance to discoloration than group polished with PoGo.
키워드
벌크필레진; 색조 안정성; 복합레진; 연마 방법
bulk-fill resin; color stability; composite resins; polishing methods; Sof-Lex Spiral wheels
원문 및 링크아웃 정보
등재저널 정보