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J Contemp Dent Pract. 2015 Jun 1;16(6):519-22.

Mandibular First Premolars with One Root and Three Canals: A Case Series.

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Department of Endodontics, Faculty of Dentistry, Zahedan University of Medical Sciences, Zahedan, Iran.
Associate Professor, Department of Endodontics, Dental Research Center Faculty of Dentistry, Mashhad University of Medical Sciences, Vakilabad Blvd Mashhad, Po Box: 91735-984, Iran Phone: +98-511-8829501, e-mail:,
Department of Conservative Dentistry and Endodontics Faculty of Dental Sciences, MS Ramaiah University of Applied Sciences, Bengaluru, Karnataka, India.
Department of Oral and Maxillofacial Pathology, Faculty of Dental Sciences, MS Ramaiah University of Applied Sciences Bengaluru, Karnataka, India.


The possibility of extra canals in mandibular premolars is quite low; however, it must be taken into account in clinical and radiographic evaluations during root canal treatment. This case series describes the presence of one root and three canals in mandibular premolars in three patients. The case series underlines the importance of complete knowledge about root canal morphology and possible variations to increase the ability of clinicians to treat difficult cases.


Anatomical variation; Mandibular premolar; Endodontic treatment.

[Indexed for MEDLINE]

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