Palfique Estelite의 경화전후 색조 변화에 관하여
COLOR CHANGES OF PALFIQUE ESTELITE BETWEEN PRE AND POST IRRADIATIONS
유타가 요시마, 하루히또 다까기, 노리꼬 사이렌지, 하루히또 이께다, 다가시 구로다, 히데오 오노세,
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유타가 요시마 ( Yutaka Aoshima ) - Nihon University School of Dentistry Department of Operative Dentistry
하루히또 다까기 ( Haruhito Takagi ) - Nihon University School of Dentistry Department of Operative Dentistry
노리꼬 사이렌지 ( Noriko Sairenji ) - Nihon University School of Dentistry Department of Operative Dentistry
하루히또 이께다 ( Harughiko Ikeda ) - Nihon University School of Dentistry Department of Operative Dentistry
다가시 구로다 ( Takashi Kuroda ) - Nihon University School of Dentistry Department of Operative Dentistry
히데오 오노세 ( Hideo Onose ) - Nihon University School of Dentistry Department of Operative Dentistry
KMID : 0613419970060010010
Abstract
It is pointed out that the color of composite resin is changing according to it's ploymerization and this color change is a harmful effect for the clinical satisfacion of composite resin restoration. The purpose of this study was to compare the changes of color of newly developed composite resins between before and after exposure of activating light. Five Compostie resins (8 shades) were employed: Palfique Estelite(UL, U, DY, G ; Tokuyama), Photo Clearfil A (US : Kuraray), Photo Clearfil Bright (US ; Kuraray), GC Graft LC(A3 ; GC), Silux Plus(U; 3M), Tristirnulus values of each material were determined before and after curing-light exposure by using a Micro Multi Photometer (MMP-1001, Nihon Denshoku Kogyo). The values were transformed into $L^*\;a^*\;b^*$ 수식 이미지 system and color changes of the resins were evaluated by the changes of $L^*$ 수식 이미지, $a^*$ 수식 이미지 and $b^*$ 수식 이미지 values for the individual shades. In addition, the effects of resin thickness and background color on color changes were also studied The finding were as follows: 1. Color changes of $L^*$ 수식 이미지, $a^*$ 수식 이미지 and $b^*$ 수식 이미지 values were recognized due to the light exposure for all products. The $b^*$ 수식 이미지 values of Palfique Estelite showed negligible changes for all shades. 2. The $b^*$ 수식 이미지 values were affected strongly by the background color, especially when decreasing the brightness on the background color.(Request original article reprints to Dr. Aoshima)
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