1986 Volume 32 Issue 11 Pages 2156-2163
A 15-year-o1d male with odontodysplasia was prescnted. The affected right upper central incisor was extracted and cut into two portions. Ground sections were made from the one half of the tooth and their microradiograms were taken with the soft X-ray. Decalcified sections were made from the other half of the tooth. Different two zones could be observed within the enamel layer. The outer hypoplastie enamel showed calcified globules, while the inner enamel showed normal structure. Dentin consisted of extensive interglobular region. The hypermineralized amorphous structure was observed in the coronal dentin.