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Q&A
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What is the difference between primary and permanent teeth?

Answered by: Dr. Mahesh Verma
Director-Principal, Department of Dental Surgery,
Maulana Azad Institute of Dental Sciences,
New Delhi

Q. What are the differences between primary and permanent teeth?

A.  Primary teeth are Milk teeth, which appear in the mouth at 6-7 months and shed by 11 years. These are 20 in number. Permanent teeth appear at 6-7 years and the last permanent tooth (Wisdom tooth) appears at the age of 17-23 years. Most permanent teeth erupt at the place of milk teeth except few.

A.  Primary teeth are Milk teeth, which appear in the mouth at 6-7 months and shed by 11 years. These are 20 in number. Permanent teeth appear at 6-7 years and the last permanent tooth (Wisdom tooth) appears at the age of 17-23 years. Most permanent teeth erupt at the place of milk teeth except few.

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