The number of teeth that grow only once in a | vedclass

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Question

(D) Humans have a diphyodont dentition,meaning they have two sets of teeth during their lifetime: deciduous (milk) teeth and permanent teeth.Total num

Vedclass · Accepted Answer

$12$

Vedclass · Answer

(D) Humans have a diphyodont dentition,meaning they have two sets of teeth during their lifetime: deciduous (milk) teeth and permanent teeth.Total number of permanent teeth in an adult is $32$.Out of these $32$ teeth,$20$ teeth are replaced by permanent teeth (these are the teeth that grow twice).The remaining teeth,which grow only once in a lifetime,are the $12$ molars ($3$ molars on each side of each jaw).Therefore,the number of teeth that grow only once is $12$.

The number of teeth that grow only once in a human's lifetime is .......

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