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rev port estomatol med dent cir maxilofac . 2019;60(4):197-204 203

ing in more complex root canal anatomies that potentially Conflict of interest
increase the endodontic procedures’ difficulty.
This dentinogenesis may lead to different anatomic con- The authors have no conflicts of interest to declare.
figurations of the maxillary first molar. Several of them have
been already reported in the scientific literature. The review references
1
by Cleghorn et al. makes an extensive analysis of the data
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a literature review. J Endod. 2006;32:813-21.
34 ex vivo and in vivo studies, one root canal (MB) was identified 2. Gopikrishna V, Bhargavi N, Kandaswamy D. Endodontic
in 43.1% of the cases and two root canals (MB1 and MB2) in management of a maxillary first molar with a single root and
56.8%. The distobuccal root review had an overall sample of a single canal diagnosed with the aid of spiral CT: a case
2576 roots from 14 laboratory and clinical studies. The inci- report. J Endod. 2006;32:687-91.
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this may be found in the DB root very rarely. In this report, two 4. Zheng Q, Wang Y, Zhou X, Wang Q, Zheng G, Huang D. A
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three canals were found in both mesiobuccal and distobuccal population. J Endod. 2010;36:1480-4.
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figuration in both cases, the distobuccal had a Gulabivala type a maxillary first molar. J Endod. 1984;10:397-9.
1 (3-1) configuration in Case #1 and a Vertucci type II (2-1) in 6. Friedman S. Prognosis of initial endodontic therapy. Endod
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Case #1 and type V (1-2) in Case #2. 16 affecting outcomes of nonsurgical root canal treatment: part
As for the techniques used to approach these cases clini- 1: periapical health. Int Endod J. 2011;44:583-609.
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of the anatomy is important. The surgical microscope works Periapical inflammation subsequent to coronal inoculation
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allowing to detect all the depressions and isthmuses that may treatment sessions with chlorhexidine medication. J Endod.
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obtained the written informed consent of the patients or sub- 19. Weller RN, Hartwell GR. The impact of improved access and
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possession of this document. in maxillary molars. J Endod. 1989;15:82-3.