Association between mineralization of third molars and chronological age in a Brazilian sample

  • Amanda Maria Medeiros Araújo Universidade Federal de Campina Grande
  • Maria Luiza dos Anjos Pontual UFPB
  • Kalianna Pereira de França UFPB
  • Ricardo Villar Beltrão UFPB
  • Andréa dos Anjos Pontual UPE
Keywords: Panoramic radiography, age determination by teeth, third molar, tooth calcification

Abstract

Purpose: To evaluate the association between chronological age and mineralization of third molar teeth in a sample from the Northeast region of Brazil. Methods: A sample of 173 digitized panoramic radiographs were selected from a total of 2,442 panoramic radiographs obtained over a period of 6 months at a private Dental Radiology service, in the city of João Pessoa, PB, Brazil. The patients were aged from 5.5 to 21 years, and a calibrated examiner made the evaluation using the classification proposed by Demirjian. Data were analyzed by using an adjusted multiple linear regression model considering age as a response variable. The level of significance adopted was 0.05. Results: Gender and stage of calcification were significantly correlated associated with age. There was no effect of gender on mineralization of the teeth. Between the two consecutive stages of calcification of third molar teeth, the mean increase in age varied by 16 months. Conclusion: The results suggest that the development of the third molar teeth is similar in both sexes. Calcification of third molars may be an auxiliary tool in the study of chronological age.

Author Biographies

Amanda Maria Medeiros Araújo, Universidade Federal de Campina Grande
Centro de Saúde e Tecnologia Rural / Unidade Acadêmica de Ciências Biológicas / Curso de Odontologia
Maria Luiza dos Anjos Pontual, UFPB
Department of Clinic and Social Dentistry, School of Dentistry, Federal University of Paraíba-UFPB, João Pessoa, PB, Brazil
Kalianna Pereira de França, UFPB
Department of Clinic and Social Dentistry, School of Dentistry, Federal University of Paraíba-UFPB, João Pessoa, PB, Brazil
Ricardo Villar Beltrão, UFPB
Department of Clinic and Social Dentistry, School of Dentistry, Federal University of Paraíba-UFPB, João Pessoa, PB, Brazil
Andréa dos Anjos Pontual, UPE
Department of Oral Diagnosis, School of Dentistry, Pernambuco University-UPE, Camaragibe, PE, Brazil
Published
2010-09-29
Section
Original Article