MadSci Network: General Biology

Re: What triggers/controls growth of the second set of human teeth?

Date: Sun Aug 14 02:32:18 2005
Posted By: Shoaib Khan, Doctor, Dentistry & materials, Fatima Jinnah Dental Hospital
Area of science: General Biology
ID: 1122269973.Gb

Hi June, 

There are 2 sets of teeth,
1. Primary
2. Secondary

The trigger for tooth formation is based on genetics, and on the growth of the child. As the child 
grows, the growth of the teeth starts,  and the tooth bud is 
formed. Once it is about to be complete, it starts resorbing the root of 
primary teeth, and then erupts defining the path of eruption.

The teeth the singer was able to grow were not incisors, but canines. 

The X-ray you are talking about is an OPG, which shows all of the 
teeth plus mandible and maxilla. The teeth you are saying are waiting 
to erupt are not actually waiting to erupt... they are being formed, and once 
they r formed ... they will erupt ...  unless they are 

thank you

Dr. Shoaib

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