On the OPG of the affected region, the radiolucency around the unerupted ghost tooth represents:

A pericoronal radiolucency Ôëñ 3 mm around the crown of an unerupted tooth is within the limits of a normal dental follicle. A dentigerous cyst by definition exceeds 3–4 mm and attaches at the CEJ. In regional odontodysplasia the follicle is typically normal, but the tooth inside is hypomineralized.