수종의 복합레진의 중합에 의한 색상 및 반투명도 변화
Color and Translucency Change by Polymerization of Various Resin Composites
박원희, 오세윤, 주성원, 안진수,
소속 상세정보
박원희 ( Park Won-Hee ) - 한양대학교 의과대학 치과학교실
오세윤 ( Oh Sae-Yoon ) - 고려대학교 보건과학대학 치기공학과
주성원 ( Ju Sung-Won ) - 고려대학교 보건과학대학 치기공학과
안진수 ( Ahn Jin-Soo ) - 서울대학교 치의학대학원 치과생체재료과학교실
KMID : 0362220100370010001
Abstract
Composite resins have advantages such as excellent esthetics, appropriate strength and relatively inexpensive price. However, observable discolorations of composite resins during the polymerization process would influenc e the ac curac y of c linical shade matc hing. This s tudy aimed to evaluate the c olor c hanges o f two brands of domestic (DenFil and CharmFil plus) and two brands of foreign composite resins before and after polymerization. Color of composite resin specimens (12 mm in diameter and 1mm in thickness) was measured with a spectrophotometer over white and black backgrounds before and after polymerization, and translucency parameter (TP) was calculated. The changes in color (ΔE*ab) and color coordinates (ΔL*, Δa* and Δb*) were calculated and analyzed with one-way ANOVA and scheffe’s multiple range test (α=0.05). After polymerization, DenFil showed a decrease of both CIE a* and b* values (-0.1 to -6.7) while CharmFil plus showed a significant decrease of CIEb* value (-5.5 to -8.2). ΔE*ab values of the investigated composite resins were increased in the order of foreign brands, DenFil and CharmFil plus (p<0.05). All the composite resins showed increased TP values after polymerization. Therefore, the color change by polymerization of composite resins, especially the domestic composite resins, should be improved for successful and esthetic shade matching.
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키워드
Translucency;Composite resin;Spectrophotometer;Shade;Polymerization
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