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(A) Human dentition is diphyodont,heterodont,and thecodont. Diphyodont means teeth appear in two sets during a lifetime. The first set is the deciduou

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$2102 / 2102$

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(A) Human dentition is diphyodont,heterodont,and thecodont. Diphyodont means teeth appear in two sets during a lifetime. The first set is the deciduous or milk teeth,which are replaced by permanent teeth between $6$ and $12$ years of age. $A$ child between $4$ and $6$ years of age possesses $20$ milk teeth. These include $8$ incisors,$4$ canines,and $8$ molars. Premolars $(PM)$ are absent in milk teeth. The dental formula is represented as $I \frac{2}{2}, C \frac{1}{1}, PM \frac{0}{0}, M \frac{2}{2}$. Thus,the total number of teeth is $(2+1+0+2) 	imes 2 = 20$.

Which one is correct regarding the number of teeth and dental formula with reference to a child of age between $4$ to $6$ years?

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