Document Detail

The comparison between measurement of open apices of third molars and Demirjian stages to test chronological age of over 18 year olds in living subjects.
MedLine Citation:
PMID:  18751992     Owner:  NLM     Status:  MEDLINE    
This paper concerns a method for assessing adult age based on the relationship between age and the third molar maturity index (I(3M)), which is related to the measurement of the open apices of the third molar. Furthermore, this method was compared to those based on Demirjian's stages G and H. The sample consisted of 906 Caucasian individuals aged between 14 and 23 years (53.6% females and 46.4% males). Orthopantomographs were analyzed by two observers and calibrated by means of the concordance correlation coefficient for the reproducibility of the third molar maturity index (I(3M)) and kappa statistics for reproducibility of the Demirjian stages. Probabilities for an individual to be older than 18 years of age (adult age) were derived using the measurements of the third molar maturity index (I(3M)). These results were exploited to set out a threshold value to assign an individual to juvenile or adult age. A cutoff value of I(3M) = 0.08 was taken. The sensitivity of this test was 70% and specificity was 98%. Furthermore, the proportion of individuals with a correct classification was 83%. The results of the test showed a better specificity when compared to the choice of stage G and a better sensitivity when compared to the choice of stage H for adult age.
R Cameriere; L Ferrante; D De Angelis; F Scarpino; F Galli
Publication Detail:
Type:  Journal Article     Date:  2008-08-28
Journal Detail:
Title:  International journal of legal medicine     Volume:  122     ISSN:  0937-9827     ISO Abbreviation:  Int. J. Legal Med.     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-10-06     Completed Date:  2009-03-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9101456     Medline TA:  Int J Legal Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  493-7     Citation Subset:  IM    
Institute of Forensic Medicine, University of Macerata, Via D. Minzoni, 62100, Macerata, Italy.
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MeSH Terms
Age Determination by Teeth / methods*
Forensic Dentistry / methods*
Logistic Models
Molar, Third / anatomy & histology*,  growth & development
Radiography, Panoramic
Reproducibility of Results
Sensitivity and Specificity
Tooth Apex / anatomy & histology*,  growth & development
Young Adult

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