A<unk>  may present itself on a radiograph or x-ray and appear as an radiopaque mass depending on its stage and mass within the lower dental arch. In early stages, the mass will appear as radiolucent. In terminal stages, the mass becomes radiopaque and a radiolucent rim will be visible. As the lesion enlarges, complexity of diagnosis increases and the mass must be analyzed for characteristics of an odontoma, hypercementosis, cemental dysplasia, and condensing osteitis. Misdiagnosis can result in an unnecessary root canal. Differential diagnosis *<unk> s reveal a more uniform radiolucent band surrounding the lesion than the bands found in cement dysplasia. *Periapical cemental dysplasia is usually found in the lower anterior teeth and does not cause shifting of teeth. * Odontomas have mixed radio density and usually are not continuous into the root. * Hypercementosis present with small lesions and are not accompanied by pain or jaw swelling. * Condensing osteitis is a well-defined radiopaque lesion usually surrounding the apex of a necrotic tooth and does not have a radiolucent rim.
Cementoma
Apudoma
Cementoblastoma
Dentigerous cyst
Chorangioma
Nevus of Ota
Rhinoscleroma
Spider angioma