Cementoblastoma. A report of three cases.

Cementoblastoma is a relatively rare tumor of odontogenic ectomesenchyme origin characterized by proliferating cementum-like tissue, manifested as a bulbous growth around and attached to the apex of the tooth root. This tumor accounts for 0.8% to 2.6% of all odontogenic tumors. We report three cases of cementoblastoma in the mandibular permanent first molar.