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Studying Orthodontic Tooth Movement in Mice
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Deciduous Molars Complexity Anatomy Reveled by Computed Microtomography.

Tais Fernandes Teixeira1, Alexandre Marques Paes da Silva1, Thais Machado de Carvalho Coutinho2

  • 1Postgraduate Program in Dentistry, Estácio de Sá University, Rio de Janeiro, Brazil.

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Summary

This study used computed microtomography to detail the internal anatomy of primary molars from Rio de Janeiro. Findings offer insights for root canal preparation strategies in pediatric dentistry.

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Area of Science:

  • Endodontics
  • Pediatric Dentistry
  • Dental Anatomy

Background:

  • Understanding the internal morphology of deciduous molars is crucial for effective endodontic treatment in children.
  • Previous studies have provided limited detailed anatomical data on primary molars.

Purpose of the Study:

  • To analyze the internal morphology of deciduous molars using computed microtomography.
  • To provide detailed anatomical data for primary molars from a Rio de Janeiro sample.

Main Methods:

  • Sixty deciduous molars (30 maxillary, 30 mandibular) were scanned using computed microtomography.
  • Evaluated parameters included root number, root canal morphology (Vertucci classification), root curvature, lateral canals, furcation dentin thickness, Structure Model Index (SMI), volume, and canal surface area.

Main Results:

  • Maxillary molars consistently showed three roots with Vertucci type I canals.
  • Mandibular molars exhibited Vertucci type IV in mesial roots and type I in distal roots; cavo-interradicular canals were present in 2 specimens.
  • Dentin thickness in the furcation region was approximately 1.5-1.6 mm; SMI indicated a cylindrical canal shape.

Conclusions:

  • This study provides a comprehensive description of the internal anatomy of primary molars.
  • The detailed anatomical information can aid in developing improved root canal preparation techniques for deciduous teeth.