Page 49 - SPEMD_60-4

Revista Portuguesa de Estomatologia,
Medicina Dentária e Cirurgia Maxilofacial

rev port estomatol med dent cir maxilofac. 2019;60(4):197-204

Case report

Endodontic management of maxillary permanent
first molar with seven root canals – Report of two cases

a,
Mariana Domingos Pires *, Jorge N.R. Martins a,b,c
a Department of Endodontics, Faculdade de Medicina Dentária, Universidade de Lisboa (University of Lisbon), Lisbon, Portugal
b Centro de Estudo de Medicina Dentária Baseada na Evidência, Faculdade de Medicina Dentária, Universidade de Lisboa (University
of Lisbon), Lisbon, Portugal
c Unidade de Investigação em Ciência Orais e Biomédicas, Faculdade de Medicina Dentária (UICOB-FMDUL), Universidade de Lisboa
(University of Lisbon), Lisbon, Portugal

a r t i c l e i n f o a b s t r a c t

Article history: The maxillary first molar has been presented as a tooth with an enormous variety of root
Received 22 October 2019 canal system configurations. The purpose of this paper is to present two cases of maxillary
Accepted 10 December 2019 first molars displaying an uncommon seven root canal system morphology. After a proper
Available online 7 January 2020 access opening of the maxillary molars undergoing a root canal treatment, two dark devel-
opmental grooves were seen connecting both the main buccal canals to the palatal one.
Keywords: Under the magnification and illumination of a dental operating microscope, these two
Anatomy grooves were explored with ultrasonic tips, which allowed identifying several other root
Endodontics canal orifices in both buccal roots complemented by a single palatal root canal in one case,
Molar and two in the other. Embryological reasons and the best clinical approaches to these com-
Morphology plex morphologies are also debated. Bearing in mind the complexities of internal anatomy
Root canal therapy can help maximize the success rates of endodontic treatment. (Rev Port Estomatol Med Dent
Cir Maxilofac. 2019;60(4):197-204)
© 2019 Sociedade Portuguesa de Estomatologia e Medicina Dentária.
Published by SPEMD. This is an open access article under the CC BY-NC-ND license
(http://creativecommons.org/licenses/by-nc-nd/4.0/).

* Corresponding author.
E-mail address: mariana.dpires@gmail.com (Mariana Domingos Pires).
http://doi.org/10.24873/j.rpemd.2020.01.692
1646-2890/© 2019 Sociedade Portuguesa de Estomatologia e Medicina Dentária. Published by SPEMD.
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).