Deciduous Molars Complexity Anatomy Reveled by Computed Microtomography

• Published in: European journal of dentistry Vol. 18; no. 3; pp. 789 - 795
• Main Authors: Teixeira, Tais Fernandes, da Silva, Alexandre Marques Paes, Coutinho, Thais Machado de Carvalho, Marceliano, Eduardo Fagury Videira, Dos Santos Miranda, Ana Raquel Lopes, Ferreira, Dennis de Carvalho, Provenzano, José Claudio, Marceliano-Alves, Marilia Fagury Videira
• Format: Journal Article
• Language: English
• Published: Germany Thieme Medical and Scientific Publishers Pvt. Ltd 01-07-2024
• Subjects: Original
• ISSN: 1305-7456; 1305-7464
• DOI: 10.1055/s-0043-1772566

The aim of this study was to analyze the internal morphology of deciduous molars through the use of computed microtomography in a sample from Rio de Janeiro.
 Thirty maxillary and 30 mandibular deciduous molars (
 = 60), divided in first and second primary molars, were scanned by computed microtomography. The teeth were evaluated for root number, root canals, Vertucci classification, root curvature, presence of lateral canals, furcation dentin thickness, structure model index (SMI), volume, and canal surface area.
 The results showed 100% of maxillary molars had three roots and Vertucci type I canal was more prevalent in this group. In the mandibular ones, type IV was more frequent in the mesial root and class I in the distal root and the cavo-interradicular canal occurred in 2 specimens. Dentin thickness in the furcation region measured 1.53 and 1.59 mm in the maxillary and mandibular, respectively. Volume and area parameters varied according to the evaluated canals and SMI demonstrated that all canals had a cylindrical shape.
 More detailed information about the internal anatomy of the primary molars has been described, which may help strategies in the preparation of these root canals.