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Avances en Odontoestomatología

versão On-line ISSN 2340-3152versão impressa ISSN 0213-1285

Resumo

JARA MELO, L; HIDALGO RIVAS, A  e  CELIS CONTRERAS, C. Anatomical variations in the first and second permanent mandibular molar with endodontic treatment, evaluated with cone-beam computed tomography. Narrative review. Av Odontoestomatol [online]. 2022, vol.38, n.1, pp.21-29.  Epub 28-Mar-2022. ISSN 2340-3152.

Introduction:

One of the difficulties of endodontic treatments is the anatomical variations of the roots and the root canal system. There is little information on the prevalence and spatial distribution of these variations in cases reported with CBCT (Cone-Beam Computed Tomography). The purpose of this review was to analyze the anatomical variations in the mandibular first and second permanent molars with endodontic treatment evaluated with CBCT.

Materials and methods:

Articles with cases of endodontic treatment in the first or second permanent mandibular molar were selected. The number, spatial distribution of anatomical variations of roots and canals were determined. The number and type of shape alterations were also determined.

Results:

The highest prevalence regarding number and spatial distribution of root in the first molar was three roots (1M (mesial), 2D (distal)) with 76.5% and four roots (2M, 2D) with 55.6% in second molar. The highest prevalence regarding number and distribution of root canals for the first and second molars was four channels: 1 mesiobuccal, 1 mesiolingual, 1 distobuccal and 1 distolingual, with 30% and 90.9% of the cases selected, respectively. The distribution of shape alterations was 8.7% for gemination and 2.1% for taurodontism.

Conclusions:

The anatomical variation of roots of the first and second permanent lower molars with the most frequency was three and four respectively. The most frequent anatomic variation of channels was four: 2M and 2D. The number of shape alterations were less frequent, presenting geminations and taurodontism, only in second molars.

Palavras-chave : Endodontics; Molar; Cone Beam Computed Tomography; Dental Root.

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