Write two Difference between milk teeth and Permanent teeth.
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Milk teeth: 1. A primary teeth which appear in mouth at 6-7 month and shed by 11 years.
2.These are 20 in numbers .
Permanent teeth: 1. Teeth appear at 6-7 years and the last permanent tooth appear at the age of 17-23 years.
2. Most permanet teeth erupt at the place of milk teeth except few....
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