Document Detail

Assessing tooth color differences in digital facial portraits.
MedLine Citation:
PMID:  20739690     Owner:  NLM     Status:  MEDLINE    
Although a large body of scientific literature shows that background color and luminance affect color perception, previous measurements of tooth color difference thresholds have not taken the effects of viewing context into account. The present study tested the hypothesis that differences in skin/gingival color influence individuals' judgments of tooth color differences. Perceptibility and acceptability thresholds were determined in 10 individuals using a signal detection paradigm. They evaluated 500 pseudo-random presentations of two facial portraits: an African-American and a Caucasian. These portraits varied trial-to-trial only in the direction (CIELAB +L*, +a*, or +b*) or magnitude of the color difference between a portrait's two central incisors. The individuals were significantly less sensitive to tooth color differences in the +L* direction in the Caucasian portrait than for any other combination of color direction or portrait type. Furthermore, comparable perceptibility and acceptability thresholds were generally not statistically significant from each other.
D T Lindsey; A G Wee
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2010-08-25
Journal Detail:
Title:  Journal of dental research     Volume:  89     ISSN:  1544-0591     ISO Abbreviation:  J. Dent. Res.     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-13     Completed Date:  2010-10-29     Revised Date:  2013-05-28    
Medline Journal Info:
Nlm Unique ID:  0354343     Medline TA:  J Dent Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1254-8     Citation Subset:  D; IM    
Department of Psychology, The Ohio State University, 331 Ovalwood Hall, 1961 University Drive, Mansfield, OH 44906, USA.
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MeSH Terms
African Americans
Color Perception / physiology*
European Continental Ancestry Group
Gingiva / anatomy & histology
Incisor / anatomy & histology*
Sensory Thresholds / physiology
Signal Detection, Psychological
Skin Pigmentation
Tooth Crown / anatomy & histology
Grant Support
K23 DE016890/DE/NIDCR NIH HHS; R15 EY013527/EY/NEI NIH HHS; R15 EY013527-01A1/EY/NEI NIH HHS

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