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. 2013:2013:891849.
doi: 10.1155/2013/891849. Epub 2013 Apr 15.

Three independent mesial canals in a mandibular molar: four-year followup of a case using cone beam computed tomography

Adrianne Freire de Paula  1 , Manoel Brito-Júnior, Alex Carvalho Quintino, Carla Cristina Camilo, Antônio Miranda Cruz-Filho, Manoel Damião Sousa-Neto
Affiliations

Three independent mesial canals in a mandibular molar: four-year followup of a case using cone beam computed tomography

Adrianne Freire de Paula et al. Case Rep Dent. 2013.

Abstract

Endodontic treatment of mandibular molars is challenging because of variable root canal morphology. The nonsurgical endodontic management of a mandibular first molar presenting an independent middle mesial canal is reported. After coronal access, additional clinical inspection of the mesial canals' orifices and their interconnecting groove using an endodontic explorer and 4.5× loupes enabled the identification of the middle mesial canal orifice. All root canals were chemomechanically prepared and filled. The tooth was asymptomatic and functional after 4 years of followup. Cone beam computed tomography (CBCT) images revealed normal periapical status and three-dimensional (3D) anatomical aspects of the root canal system.

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Figures

Figure 1
Figure 1
(a) Preoperative radiograph. (b) Clinical view of root canal entrances including a middle mesial canal (arrow). (c) Radiograph for working length determination showing three independent mesial canals. (d) Postoperative radiograph.
Figure 2
Figure 2
(a) Axial CBCT slices on coronal, middle and apical root sections (arrows) showing three independent mesial canals. (b) Coronal CBCT view of mesial root with three filled root canals. (c). 3-Dimensional rebuild illustrating the internal configuration including a filled isthmus between the mesiobuccal and middle mesial canals (arrows).
See this image and copyright information in PMC

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