May Be Caused by

 Common

Bone island

Condensing osteitis

Focal cementoosseous dysplasia

Foreign body

Gardner syndrome

Hypercementosis

Osteoma

Periapical cementoosseous dysplasia

Periapical idiopathic osteosclerosis

Sclerosing osteitis

 Uncommon

Calcifying odontogenic keratocyst

Cementoblastoma

Cementoossifying fibroma

Chondroma

Chondrosarcoma

Exostosis

Hamartoma

Osteoblastic metastasis

Osteoblastoma

Osteosarcoma

Paget disease of bone

Sclerosing osteomyelitis

Torus mandibularis

Torus palatinus