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Healthy Mouth, Healthy Kids

Late teeth



My son is 18.5 months old and only has two teeth on the bottom in front. Could there be a medical reason for his teeth being so late? If so what might be the reasons?


Some children begin to erupt their baby teeth much later than others and it is normal that the lower front teeth are the first to emerge.  It is likely that your son will continue to erupt baby teeth normally, but he should be examined now by a pediatric dentist to answer your specific questions and to rule out any other problems.

The most common "medical" condition that occurs with missing primary teeth is ectodermal dysplasia.  Other classic signs accompanying this condition are sparse blonde hair, deficient sweat glands and intolerance to heat.  This is a relatively rare condition and, again, your pediatric dentist will be able to address your concerns when your son is examined.

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Response by:

Dennis J McTigue, DDS Dennis J McTigue, DDS
Professor of Pediatric Dentistry
College of Dentistry
The Ohio State University