The aim of the paper is to classify individuals according to age through dental development of their third molars. Such teeth were classified by Demirjian’s 8-stages dental maturity scale, but we introduced a new and relevant variation. In fact the odontologist is allowed to classify a tooth representing the uncertainty about the stage attribution, using the soft-evidence, which is included in the parametric learning. We used a modified Naïve Bayes to classify 559 Italian youths (307 males and 252 females) aged between 16 and 23, according to dichotomous and trichotomous classifications. Results show the importance of the expert’s skill in reading the OPG and the ability to express their beliefs about the dental maturity stage.
Probabilistic classification of age by third molar development: the use of soft-evidence / V. Pinchi; F. Corradi; I. Barsanti; S. Garatti. - ELETTRONICO. - WP-02-2010 Dipartimento di statistica Università di Firenze:(2010), pp. 1-21.
Probabilistic classification of age by third molar development: the use of soft-evidence
PINCHI, VILMA;CORRADI, FABIO;BARSANTI, ILJA';
2010
Abstract
The aim of the paper is to classify individuals according to age through dental development of their third molars. Such teeth were classified by Demirjian’s 8-stages dental maturity scale, but we introduced a new and relevant variation. In fact the odontologist is allowed to classify a tooth representing the uncertainty about the stage attribution, using the soft-evidence, which is included in the parametric learning. We used a modified Naïve Bayes to classify 559 Italian youths (307 males and 252 females) aged between 16 and 23, according to dichotomous and trichotomous classifications. Results show the importance of the expert’s skill in reading the OPG and the ability to express their beliefs about the dental maturity stage.
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