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By the age of 12, all permanent teeth are typically present except for the third molars, which may emerge after 18 years. What is the dental formula before the wisdom teeth develop?

1. 2 incisors, 1 canine, 2 premolars, and 2 molars on each side of the jaw
2. 2 incisors, 1 canine, 2 premolars, and 3 molars on each side of the jaw
3. 2 incisors, 1 canine, 2 premolars, and 1 molar on each side of the jaw
4. 2 incisors, 1 canine, 1 premolar, and 2 molars on each side of the jaw

Correct answer: 2 incisors, 1 canine, 2 premolars, and 2 molars on each side of the jaw

Solution

The dental formula for permanent teeth before the wisdom teeth (third molars) appear is i2/2, c1/1, pm2/2, m2/2. This accounts for the incisors, canines, premolars, and the first two molars, excluding the third molars.

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