RT Journal Article
T1 CIEDE2000 lightness, chroma and hue human gingiva thresholds.
A1 Perez, Maria M
A1 Carrillo-Perez, Francisco
A1 Tejada-Casado, Maria
A1 Ruiz-Lopez, Javier
A1 Benavides-Reyes, Cristina
A1 Herrera, Luis Javier
K1 CIEDE2000
K1 Chroma
K1 Hue
K1 Human gingiva
K1 Lightness
K1 Visual thresholds
AB To determine the visual 50:50% perceptibility and acceptability CIEDE2000 lightness, chroma and hue human gingiva thresholds. A psychophysical experiment based on visual assessments of simulated images of human gingiva on a calibrated display was performed. A 20-obsever panel (dentists and laypersons; n=10) evaluated three subsets of simulated human gingiva: lightness subset (|ΔL'/ΔE00|≥ 0.98); chroma subset (|ΔC'/ΔE00|≥ 0.98) and hue subset (|ΔH'/ΔE00|≥ 0.96) using ΔE00 The 50:50% PT were ΔL' = 0.74 (95% confidence interval (CI) 0.39-1.09); ΔC' = 1.10 (95% CI 0.57-1.46); ΔH' = 2.40 (95% CI 1.66->3.85). The 50:50% AT were ΔL' = 2.57 (95% CI 2.00-3.06); ΔC' = 2.70 (95% CI 2.19-3.38). AT ΔH' may be considered no computable. PT values were statistically significant among the three metric differences (p ≤ 0.05). No difference was found between observers for PT values. Statistically differences in perceptual limit were found among hue, lightness and chroma for human gingiva. Thus, the observers seem to show lower sensitivity for changes in hue (ΔH') than in chroma (ΔC') and in lightness (ΔL') in the gingiva color space. PT and AT for lightness, chroma and hue specific for human gingiva should be used when evaluating natural gingiva, pink gingival shade guides or pink materials, since the thresholds of perception and acceptability for teeth are not suitable.
PB Elsevier Ltd
YR 2022
FD 2022-07-02
LK http://hdl.handle.net/10668/22300
UL http://hdl.handle.net/10668/22300
LA en
NO Pérez MM, Carrillo-Perez F, Tejada-Casado M, Ruiz-López J, Benavides-Reyes C, Herrera LJ. CIEDE2000 lightness, chroma and hue human gingiva thresholds. J Dent. 2022 Sep;124:104213.
NO ecial thanks to the observers who took part in this study. The authors acknowledge funding support from research projects P20-00200 from I+D+I Junta de Andalucía, PGC2018-101904-A-100 and RTI2018-101674-B-I00 from the Spanish Ministry of Science, Innovation and Universities, A.TEP.280.UGR18 from University of Granada. Funding for open access charge: Universidad de Granada / CBUA.
DS RISalud
RD Apr 7, 2025