Internal configuration of maxillary molars in a subpopulation of Brazil's Northeast region: A CBCT analysis

• Main Authors: George Táccio de Miranda CANDEIRO (Author), Samilla dos Santos GONÇALVES (Author), Luiza Lassi de Araújo LOPES (Author), Ilana Thaís de Freitas LIMA (Author), Phillipe Nogueira Barbosa ALENCAR (Author), Elaine Faga IGLECIAS (Author), Paulo Goberlânio Barros SILVA (Author)
• Format: Book
• Published: Sociedade Brasileira de Pesquisa Odontológica.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Abstract The present study aimed to evaluate the internal configuration of the maxillary molars of a population from the Northeast region of Brazil. Cone-beam computed tomography (CBCT) exams from 512 patients (1501 teeth) were evaluated regarding the anatomical configuration of the root canal system, according to Vertucci's classification. The images were obtained using a Prexion 3D scanner operating at 90 kVp and 4 mA. The voxel size was 0.125 mm and the cut thickness was 1 mm. The images were then analyzed in the Prexion 3D Viewer software. The data were analyzed statistically by Pearson's chi-square test, with 5% of significance. The first and second molars presented three roots in 99.14% and 87.27% of the cases, respectively. In relation to the number of canals, the first and second molars had a significantly higher frequency of three and four root canals respectively, presenting a higher prevalence of types I and II (p < 0.001). The second mesiobuccal canal (MB2) was observed in 48.21% and 22.72% of the first and second molars, respectively (p < 0.001). The identification of the MB2 canal was greater in young and adult patients (p < 0.001), presenting a higher prevalence in male patients (p < 0.001). The internal configuration of the MB root was influenced by gender and by age, presenting a higher prevalence of the MB2 in male patients younger than 50 years of age.

Item Description

1807-3107
10.1590/1807-3107bor-2019.vol33.0082