Abrams R A, Nelson D L
Aust Dent J. 1979 Jun;24(3):141-2. doi: 10.1111/j.1834-7819.1979.tb02411.x.
During a routine oral examination of a 19 year-old Black male, a bony impaction of his mandibular left third molar fused to an inverted supernumerary tooth with a cystic cavity was found. Histologic examination confirmed the presence of a dentigerous cyst.