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An adolescent human below 17 years of age normally has dental formula as:

1. 3 1 3 1 / 3 1 2 1
2. 2 1 2 3 / 2 1 2 3
3. 2 1 2 3 / 3 1 2 3
4. 2 1 2 2 / 2 1 2 2

Correct answer: 2 1 2 2 / 2 1 2 2

Solution

An adolescent under 17 typically has the permanent dentition except the third molars. That gives 2 incisors, 1 canine, 2 premolars, and 2 molars in each quadrant, written as 2 1 2 2 / 2 1 2 2.

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