Eruption of permanent teeth in cases of extremely early loss of deciduous teeth:

# The eruption of permanent teeth in cases of extremely early loss of deciduous teeth  will result in:

A. No change in the time of eruption

B. Early eruption of the permanent teeth

C. Delayed eruption of the permanent teeth

D. A class II division 1 malocclusion

The correct answer is C. Delayed eruption of the permanent teeth.

Sometimes incisors fail to erupt even when there is no retained or overlying primary tooth or supernumerary  teeth present. Changes in the overlying keratinized tissue occur in long-standing edentulous regions, and this contributes to slow eruption of a permanent incisor when its predecessor was lost prematurely. 

Ref: Comtemporary Orthodontics, Proffit 4th Edition, Page 450

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