Although the presence of maxillary first premolar with two root canals is more common, other anatomic deviations, as one or three canals, have also been reported. A correct understanding of these morphologies, a correct radiographic analysis and the use of magnification devices will help to achieve higher success on these cases. The aim of this paper is, presenting a series of clinical cases, to contribute to a better knowledge and approach to these clinical conditions. © 2011 Sociedade Portuguesa de Estomatologia e Medicina Dentária.
Martins, J. N. R. (2011). Primeiro pré-molar superior com três canais: Diagnóstico e tratamento - Quatro casos clínicos. Revista Portuguesa de Estomatologia, Medicina Dentaria e Cirurgia Maxilofacial, 52(1), 43–51. https://doi.org/10.1016/S1646-2890(11)70010-3