Mandibular molars can have an additional root located lingually (the radix entomolaris) or buccally (the radix paramolaris). If present, an awareness and understanding of this unusual root and its root canal morphology can contribute to the successful outcome of root canal treatment. This report discusses endodontic treatment of three mandibular molars with a radix entomolaris. The prevalence, the external morphological variations and internal anatomy of the radix entomolaris and paramolaris are described.
Anatomical variations, endodontic treatment, mandibular molar, radix entomolaris, radix paramolaris
