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Give scientific reasons : Heterodontic d...

Give scientific reasons : Heterodontic dentition is seen in human beings.

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Human beings have four different type of teeth namely canine, incisors, premolars and Molars. This type of dentition is called Heterodont.
Incisors are like spade they help food in cutting and tearing.
Premolars and molars possesses broad surface. They help to chew, grind the food.
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