Clinical and histologic observations of opalescent dentin associated with enamel defects.

The rare variant of opalescent dentin associated with enamel defect was found in a 1 1/2-year-old boy. The pulp chambers and root canals of the affected deciduous teeth were very large, with no sign of obliteration. The enamel layer of those teeth was markedly reduced in thickness, and the enamel prisms were not recognized even by scanning electron microscopy. The mantle dentin was abnormal, as were other portions of dentin.