May Be Caused by

 Common

Advanced periodontal disease

Benign nonodontogenic tumor

Bone marrow pattern

Bone sarcoma

Buccal cyst

Burkitt lymphoma

Dentigerous cyst

Disease extension from adjacent tooth

Globulomaxillary radiolucency

Iatrogenic perforation of root of tooth

Incisive canal cyst

Incisive foramen

Lateral canal periapical cyst

Lateral fossa between lateral incisor and canine teeth

Lateral periodontal cyst

Leukemia

Lymphoma

Maxillary sinus

Median mandibular cyst

Mental canal

Mental foramen

Metastasis

Multiple myeloma

Nutrient canal

Odontogenic carcinoma

Odontogenic cyst

Odontogenic keratocyst

Odontogenic tumor

Paradental cyst

Periodontal abscess

Periodontal bony pocket

Primary tooth crypt

Squamous cell carcinoma

Traumatic bone cyst

 Uncommon

Adenomatoid odontogenic tumor

Giant cell granuloma

Langerhans cell histiocytosis

Melanotic neuroectodermal tumor of infancy

Radiation osteonecrosis