ABSTRACT: Cementoblastoma is a rare benign lesion that represents less than 1% of all odontogenic tumours. It’s characterized by proliferation of cementum-like tissue and in almost all cases tends to be associated with an erupted permanent tooth, most often the first molar. Cementoblastoma is a rare odontogenic tumor, it should be considered in the differential diagnosis of periapical radio-opacities. The diagnosis is established by its attachment to the root of tooth and radiographic halo surrounding the radio-opaque mass. The treatment of choice is complete removal of the lesion with the extraction of the associated tooth. Complete excision of the tumor mass reduces the chances of recurrence.