Etiology

• Rare benign lesion of cementoblastic origin

Clinical

• Low grade intermittent pain
• Lesion surrounded by periodontal ligament space – cortical expansion

Site

• Mandible > Maxilla
• Posterior > Anterior
• Close association with root of vital tooth

Radiology

• Radiopaque, obliterating root of a tooth
• Surrounded by lucent halo

Histology

• Dense mass of cementum like material with reversal lines
• Large hyperchromatic cementoblasts and cementoclasts depending on remodeling going on

Management

• Bone relief by sacrifice of associated tooth
• No recurrence

Picture