Monday, 11 September 2017

development - Is there any scientific evidence that a human has ever grown a third set of teeth?


This is about the possibility (or lack thereof) for a person to re-grow a new "permanent tooth" or set of teeth, to replace the teeth that grew after their milk teeth fell out.



I had earlier seen some anecdotal evidence on the internet that this would have happened to some people.


Anyway, what I wanted to ask is if there is any scientific evidence (e.g. properly recorded unusual medical phenomena) that shows that a person has grown a tooth (or a set of teeth) to replace their permanent teeth?



Answer



There are legitimate case reports in credited journals of hyperdontia, or the condition of having supernumerary teeth. Such cases are often associated with congenital syndromes-- cleft lip and palate, trichorhinophalangeal syndrome, cleidocranial dysplasia, and Gardner's syndrome. I included a case report and a comprehensive review for you below.


Case Report from American Journal of Orthodontic Dentofacial Orthopedics, 2011.


Comprehensive Review from Journal of Oral Science, 2014.


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