The primary dentition in humans differs from permanent dentition in not having one of the following types of teeth:

Canine

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Premolars

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Molars

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Incisors

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Solution

The correct option is A Premolars
20 primary teeth are lost as the child grows and is replaced by 32 permanent teeth. Primary dentition comprises 8 incisors, 4 canines, and 8 molars while permanent teeth comprise 8 premolars in addition to newly formed 8 incisors, 4 canines, and 12 molars. Premolars take the place of molars present in the primary dentition.
Thus, the correct answer is option B.

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Mammals have heterodont dentition with different types of teeth that are not specialized to match specific eating habits.

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