Document Detail

In vitro validity of the Dundee Selectable Threshold Method for caries diagnosis (DSTM).
MedLine Citation:
PMID:  10634684     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: It is not generally possible to assess diagnostic accuracy in dental surveys as no histological 'gold standards' are available, therefore examiner agreement tends to be used as a proxy for accuracy. The aim of this study was to investigate, using extracted teeth in arch models, the in vitro validity of a diagnostic system to assess caries at the D1 (enamel and dentine) and D3 (dentine) diagnostic thresholds, for epidemiological purposes. METHOD: Two groups of 10 dental examiners trained in the use of the Dundee Selectable Threshold Method for caries diagnosis (DSTM) each examined (on two occasions) 160 extracted permanent molar and premolar teeth set in arch models in phantom heads according to the codes and criteria of the DSTM. The teeth were subsequently radiographed and sectioned to provide validation of the diagnoses. RESULTS: Intra-examiner agreement according to the kappa statistic was substantial. In general terms the results of the in vitro validation exercise demonstrated significantly higher sensitivity values at the D1 diagnostic threshold than were found at the D3 diagnostic threshold with a consequent loss of specificity. CONCLUSIONS: The results of this in vitro validation exercise demonstrate that at the D1 diagnostic threshold the sensitivity of the DSTM was greater than at the D3 threshold indicating no loss of diagnostic accuracy at the D1 threshold.
H E Fyffe; C Deery; Z J Nugent; N M Nuttall; N B Pitts
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Publication Detail:
Type:  In Vitro; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Community dentistry and oral epidemiology     Volume:  28     ISSN:  0301-5661     ISO Abbreviation:  Community Dent Oral Epidemiol     Publication Date:  2000 Feb 
Date Detail:
Created Date:  2000-01-27     Completed Date:  2000-01-27     Revised Date:  2009-01-29    
Medline Journal Info:
Nlm Unique ID:  0410263     Medline TA:  Community Dent Oral Epidemiol     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  52-8     Citation Subset:  D; IM    
Dental Health Services Research Unit, Dental Hospital and School, Dundee, Scotland, UK.
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MeSH Terms
Bicuspid / pathology,  radiography
DMF Index
Dental Caries / diagnosis*,  pathology
Molar / pathology,  radiography
Observer Variation
Radiography, Dental / statistics & numerical data
Reproducibility of Results
Statistics, Nonparametric

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