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- W833988462 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 , , and , following results were obtained; 1. The , and values of both shade of porcelain specimens showed significantly higher than those of resin specimens(p values of SP-CH and PRO-VE, values of the VE-SP and values of the VE-Z100 and SP-PRO(p values of PRO-SP, values of the SP-PRO and Z100-VE and b* values of the PRO-SP(p) showed the lowest value of 1.66, and the highest was 5.16. 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 was 0.57 and the highest was 5.92. 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 present study suggested that it would be necessary to establish the reproducible and constant color specification system for an esthetic restoration." @default.
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- W833988462 date "1998-01-01" @default.
- W833988462 modified "2023-09-24" @default.
- W833988462 title "COMPARATIVE EVALUATION OF LIGHT-CURED COMPOSITE RESINS BASED ON VITA SHADE BY SPECTROCOLORIMETER" @default.
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