José Costa1, Javier Montero2, Sarai Serrano2, Alberto Albaladejo2, Antonio López-Valverde2, Isabel Bica3. 1. Instituto Politécnico de Viseu, Escola Superior de Saúde, Viseu, Portugal. Electronic address: jsc.costa@gmail.com. 2. Departamento de Cirugía, Universidad de Salamanca, Salamanca, Spain. 3. Instituto Politécnico de Viseu, Escola Superior de Saúde, Viseu, Portugal.
Abstract
OBJECTIVES: This study aims to assess the accuracy of age estimation according to two cut-off points of Demirjian's developmental stages (G and H) in the wisdom teeth, using panoramic radiographs from Colombian and Mexican teenagers. STUDY DESIGN: The degree of maturation of the third molars was classified according to Demirjian in 8 stages (from A to H) by a blinded trained assessor. The sensitivity, specificity and efficacy of two cut-off points (G and H) were calculated for both samples. RESULTS: The orthopantomographies of 316 subjects, 171 Colombians (54.1%) and 145 Mexicans (45.9%), were analyzed. The stage H was found to be the best threshold for detecting juveniles (because the high specificity) in all the third molars assessed. The specificity was higher for lower third molars than for upper third molars, but no asymmetrical discrepancy was noted. CONCLUSIONS: The stage H is the best cut-off point for detecting the adulthood when a high-specificity test is required.
OBJECTIVES: This study aims to assess the accuracy of age estimation according to two cut-off points of Demirjian's developmental stages (G and H) in the wisdom teeth, using panoramic radiographs from Colombian and Mexican teenagers. STUDY DESIGN: The degree of maturation of the third molars was classified according to Demirjian in 8 stages (from A to H) by a blinded trained assessor. The sensitivity, specificity and efficacy of two cut-off points (G and H) were calculated for both samples. RESULTS: The orthopantomographies of 316 subjects, 171 Colombians (54.1%) and 145 Mexicans (45.9%), were analyzed. The stage H was found to be the best threshold for detecting juveniles (because the high specificity) in all the third molars assessed. The specificity was higher for lower third molars than for upper third molars, but no asymmetrical discrepancy was noted. CONCLUSIONS: The stage H is the best cut-off point for detecting the adulthood when a high-specificity test is required.
Authors: M-D Marrero-Ramos; L López-Urquía; A Suárez-Soto; A Sánchez-Villegas; M Vicente-Barrero Journal: Med Oral Patol Oral Cir Bucal Date: 2020-05-01