Document Detail

Validation and reliability of visual assessment with a shade guide for tooth-color classification.
MedLine Citation:
PMID:  18435184     Owner:  NLM     Status:  MEDLINE    
This study evaluated the validity and reliability of the visual assessment of tooth color using a commercial shade guide. Ninety-two individuals were randomly selected from subjects enrolled in a randomized controlled trial comparing two formulations of carbamide peroxide. Initially, each individual had the color of his or her six maxillary anterior teeth (n=552) determined by one examiner using a digital spectrophotometer (Vita Easyshade). Then, a visual assessment was made by two calibrated examiners using a shade guide (Vitapan Classical). Reliability was evaluated either by kappa coefficient when all the colors were grouped into two categories (dark and light) or by weighted kappa when all 16 colors of the shade guide were considered. The digital spectrophotometer (Vita Easyshade) was used as the gold standard to calculate sensitivity and specificity of the visual assessment. The reliability of the visual assessment using two color categories was "substantial" (k=0.69). When all colors of the shade guide were considered, the reliability was "mild" (kw=0.33). Sensitivity and specificity of the visual assessment with respect to the gold standard was 86.9% and 81.9%, respectively. Despite its subjectivity, visual assessment of tooth color using the Vitapan Classical shade guide is a valid method, with good reliability for differentiating between dark and light colors.
Sônia Saeger Meireles; Flávio Fernando Demarco; Iná da Silva dos Santos; Samuel de Carvalho Dumith; Alvaro Della Bona
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  Operative dentistry     Volume:  33     ISSN:  0361-7734     ISO Abbreviation:  Oper Dent     Publication Date:    2008 Mar-Apr
Date Detail:
Created Date:  2008-04-25     Completed Date:  2008-07-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7605679     Medline TA:  Oper Dent     Country:  United States    
Other Details:
Languages:  eng     Pagination:  121-6     Citation Subset:  D    
Operative Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil.
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MeSH Terms
Color Perception / physiology*
Cuspid / anatomy & histology
Drug Combinations
Incisor / anatomy & histology
Middle Aged
Oxidants / administration & dosage,  therapeutic use
Peroxides / administration & dosage,  therapeutic use
Sensitivity and Specificity
Tooth / anatomy & histology*
Tooth Bleaching / methods*
Tooth Discoloration / drug therapy
Urea / administration & dosage,  analogs & derivatives,  therapeutic use
Reg. No./Substance:
0/Drug Combinations; 0/Oxidants; 0/Peroxides; 124-43-6/carbamide peroxide; 57-13-6/Urea

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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