TY - JOUR
T1 - Color differences
T2 - Polymerized composite and corresponding Vitapan Classical shade tab
AU - Browning, William D.
AU - Contreras-Bulnes, Rosalia
AU - Brackett, Martha G.
AU - Brackett, William W.
N1 - Copyright:
Copyright 2009 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - Objectives: This study compared newer composite resin restorative materials to the Vitapan Classical tabs they purported to represent. Methods: Five Vitapan Classical tabs were studied: A3.5, B2, C1, C3, and D2 (n = 3). These tabs created a variety of levels of lightness, chroma and hue. Each of these five shade tabs was removed from three different shade guides, and an intraoral spectrophotometer was used to capture CIELAB color coordinates. Three separate readings were made and all nine were averaged. The inter-tab color differences were also calculated. Five specimens approximately 4.0 mm thick were fabricated for each of the shades studied using five different composite resin materials. Composite specimens were of the same size and shape as target shade tabs, and three separate recordings were made for each of them. This average was compared to five Vitapan Classical shade tabs to calculate the color differences using both CIELAB and CIEDE2000 color difference formulas. Color differences were compared to thresholds for perceptibility and acceptability reported in other studies. Results: CIELAB and CIEDE2000 color differences ranged from 3.9 to 22.8 and from 2.1 to 13.8, respectively. None of the materials proved, an acceptable CIELAB color match to any of the shades tested. Conclusion: When various shade tabs of Vitapan Classical shade guides were compared with correspondent tabs made of direct restorative composites, no material/shade combination resulted in an acceptable mismatch relative to the used standard of acceptability. Therefore, evaluated resin composites exhibited poor match compared to target Vitapan Classical tabs.
AB - Objectives: This study compared newer composite resin restorative materials to the Vitapan Classical tabs they purported to represent. Methods: Five Vitapan Classical tabs were studied: A3.5, B2, C1, C3, and D2 (n = 3). These tabs created a variety of levels of lightness, chroma and hue. Each of these five shade tabs was removed from three different shade guides, and an intraoral spectrophotometer was used to capture CIELAB color coordinates. Three separate readings were made and all nine were averaged. The inter-tab color differences were also calculated. Five specimens approximately 4.0 mm thick were fabricated for each of the shades studied using five different composite resin materials. Composite specimens were of the same size and shape as target shade tabs, and three separate recordings were made for each of them. This average was compared to five Vitapan Classical shade tabs to calculate the color differences using both CIELAB and CIEDE2000 color difference formulas. Color differences were compared to thresholds for perceptibility and acceptability reported in other studies. Results: CIELAB and CIEDE2000 color differences ranged from 3.9 to 22.8 and from 2.1 to 13.8, respectively. None of the materials proved, an acceptable CIELAB color match to any of the shades tested. Conclusion: When various shade tabs of Vitapan Classical shade guides were compared with correspondent tabs made of direct restorative composites, no material/shade combination resulted in an acceptable mismatch relative to the used standard of acceptability. Therefore, evaluated resin composites exhibited poor match compared to target Vitapan Classical tabs.
KW - Color
KW - Color measurement
KW - Composite resin
KW - Delta E 2000
KW - LCH
KW - Lab
KW - Spectrophotometer
KW - Vita Classical shade guide
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U2 - 10.1016/j.jdent.2009.05.008
DO - 10.1016/j.jdent.2009.05.008
M3 - Review article
C2 - 19500895
AN - SCOPUS:67649401673
SN - 0300-5712
VL - 37
SP - e34-e39
JO - Journal of Dentistry
JF - Journal of Dentistry
IS - SUPPL. 1
ER -