분광색채계측기를 이용한 Vita Shade 광중합형 복합레진의 색상 비교
COMPARATIVE EVALUATION OF LIGHT-CURED COMPOSITE RESINS BASED ON VITA SHADE BY SPECTROCOLORIMETER
조경이, 최홍란, 황인남, 오원만,
소속 상세정보
조경이 ( ) - 전남대학교 치과대학 보존학교실
최홍란 ( ) - 전남대학교 치과대학 구강병리학교실
황인남 ( ) - 전남대학교 치과대학 보존학교실
오원만 ( ) - 전남대학교 치과대학 보존학교실
KMID : 0362319980230010424
Abstract
To get a satisfactory result in the composite resin restorations, it is necessary to choose correct shade. At present, most of the commercial composite resins are based on the Vita Lumin shade guide or Bioform shade guide, but color differences might be expected even using the same shade in various materials.
In this study, five kinds of light-cured composite resins with A2 and B3 shade were used to measure and compare the color each other while one porcelain served as a control. All composite resins (Spectrum TPH (SP), VeridonFil- Photo (VE), Z100 (Z100), Charisma (CH), Prodigy (PRO)) were filled in to the metal mold (12 mm diameter, 2 mm depth), followed by compression, polymerization and polishing with wet sandpaper. The specimens of porcelain were fabricated by using the refractory mold for porcelain. After 24 hours, the specimens were placed on the spectrocolorimeter and spectral reflectance were measured under CIE illuminant D65.
After measuring the values of L* ,a*, b* and Δ E*, following results were obtained:
1. The L*, a* and b* values of both shade of porcelain specimens showed significantly higher than those of resin specimens (p<0.05).
2. In comparing the resin specimens of the A2 shade, differences were significant except L* values of SP-CH and PRO-VE, a* values of the VE-SP and b* values of the VEZ100 and SP-PRO(p<0.05).
3. In comparing the resin specimens of the B3 shade, differences were significant except L* values of PRO-SP, a* values of the SP-PRO and Z100-VE and b* values of the PRO-SP(p<0.05).
4. In comparing the resin specimens of the A2 shade, color differences between materials(Δ E*) showed the lowest value of 1.66, and the highest was 5.16. Δ E* values of the materials of VE-PRO, CH-PRO, SP-PRO, SP-Z100 and SP-CH were lower than 3.3.
5. In comparing the resin specimens of the B3 shade, the lowest value of the Δ E* was 0.57 and the highest was 5.92, Δ E* values of Z100-CH and SP-PRO were lower than 3.3.
The present study revealed there was perceptible color difference between materials even if they have the same designated shade based on Vita shade guide. The results of the pre-sent study suggested that it would be necessary to establish the reproducible and constant color specification system for an esthetic restoration.
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