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Difference in color and color parameters between dental porcelain and porcelain‐repairing resin composite
Author(s) -
Kim SungHee,
Lee YongKeun,
Lim BumSoon,
Rhee SangHoon,
Yang HyeongCheol
Publication year - 2006
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30344
Subject(s) - color difference , lightness , hue , composite material , significant difference , mathematics , materials science , statistics , physics , optics , artificial intelligence , computer science , enhanced data rates for gsm evolution
The objective of this study was to measure the differences in color and color parameters between dental porcelain and porcelain‐repairing resin composites. The colors of three shades (A2, A3, A3.5) of one brand of dental porcelain, three original shades (A2, A3, A3.5), and three combinations (A2/A3, A3/3.5, A2/A3.5) of three brands of porcelain‐repairing resin composites (ABT, FSP, TCR) were measured. The specimens were 2 mm thick, and 1 mm of each shade was layered to make combined shades. Differences in color (Δ E ab * ), lightness (Δ L *), chroma (Δ C ab * ), and hue (Δ H * ) between porcelain and resin composite were calculated. Color difference was calculated as Δ E ab *= (Δ L * 2 + Δ a * 2 + Δ b * 2 ) 1/2 , chroma difference was calculated as Δ C ab *= (Δ a * 2 + Δ b * 2 ) 1/2 , and hue difference was calculated as Δ H ab *= (Δ E ab *2− Δ L * 2 − Δ C ab *2 ) 1/2 . The influence of porcelain shade, brand of resin composites, and shade of resin composites were analyzed by three‐way analyses of variance, and the differential influence of color parameters on color difference was analyzed with multiple regression analysis (α = 0.05). Differences in color and color parameters were influenced by the porcelain shade, brand and shade of resin composites. The Δ E ab *value was in the range of 2.2–16.9. The Δ E ab *value was correlated with Δ C ab *(standardized correlation coefficient, β = − 0.85), Δ L * (β = − 0.52), and Δ H ab *(β = 0.08). Between the same shade designated pairs of porcelain and repairing composite, color difference was perceptible. Therefore, studies to improve the color matching between porcelain and repairing resin are recommended. © 2005 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006