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Root-canal treatment of a trifid crown premolar
1Department of Endodontics, Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada. nahmias@endoweb.com
Aim:
To describe successful root-canal treatment of a permanent maxillary first premolar with unusual anatomy.
Summary:
A diagnosis of irreversible pulpitis of a geminated first premolar was made. Clinical and radiographic examination revealed a tooth with a trifid crown that joined to give the appearance of a single root at the cementoenamel junction. Root-canal treatment involved three separate access openings and treating four canals, three of which joined to exit through a common foramen.
Key Learning Points:
Symptomatic teeth with morphological aberrations can be saved by root-canal treatment. Careful clinical and radiographic evaluation are essential, as treatment must be modified to address the unusual complexities of the root-canal system(s).