The average length of a single root was 18.7 mm. The dentist must be aware of this fact in order to provide correct treatment. Failure to localize this fourth canal can lead to unsuccessful endodontic treatment. A mandibular third molar with 3 roots and another with an accessory root, which differs from the former due to its reduced size, were found. The length of the mandibular roots did not vary as much as the maxillary third molars.
Third molars show great anatomic variability.
Maxillary third molars may have one to five roots, while mandibular third molars may have one, two or three roots. Maxillary third molars may have up to 5 root canals, while mandibular third molars have up to 3 canals. Caminhos da Polpa. Morphologic study of the maxillary molars. Morphologic study of the maxillary molars.