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What is the difference between primary and permanent teeth?

Monday, 29 December 2008
Answered by: Dr. Mahesh Verma
Director-Principal, Department of Dental Surgery,
Maulana Azad Institute of Dental Sciences,
New Delhi
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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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