Table 1.

Carrol et al. classification of dentin dysplasia Type I[4]

DD types	Features
Type Ia	Complete obliteration of pulp chamber, little or no root development
Type Ib	Single crescent-shaped horizontal radicular line with abnormal radicular dentin, rudimentary root
Type Ic	Two crescent-shaped horizontal radicular lines with one half of root length and absence of canals
Type Id	Normal root formation with bulbous coronal one-third, pulp stone with healthy pulp

DD: Dentin dysplasia