Microdontic teeth succedaneous to natal teeth: a report of two cases.

With one exception, the English dental literature reveals no report of natal or neonatal teeth associated with anomalous development of their permanent successors. In a singular longitudinal study of 12 infants with natal mandibular incisor teeth, Gardiner reported essentially normal subsequent development, except for one infant with natal mandibular central incisors whose permanent replacements failed to develop. He apparently regarded this as a coincidental finding, since he did not speculate on a causal relationship between the presence of natal teeth and the absence of their successors. We recently observed two children in our clinic who presented with microdontic mandibular permanent central incisors, and a history of mandibular anterior teeth present at birth.