$$3 \text{ molars per quadrant} \times 4 = 12$$

$$2I, 1C, 2M$$ \text{ (upper and lower, each side) } \times 2$

Question 1

Which of the following best describes the difference between the primary (deciduous) and permanent dental formulas in humans?

Accepted Answer

Primary teeth lack premolars, while permanent teeth include premolars.

Question 2

How many molars are present in the permanent dentition of an adult human, according to the dental formula?

Accepted Answer

$$3 	ext{ molars per quadrant} 	imes 4 = 12$$

Question 3

A child has a full set of primary teeth. How many premolars are present in their mouth?

Accepted Answer

$$0$$

Question 4

If a patient has all their permanent teeth except for their third molars (wisdom teeth), how many teeth do they have?

Accepted Answer

$$32 - 4 = 28$$

Question 5

Which of the following is the correct dental formula for the permanent dentition in one half of the upper jaw?

Accepted Answer

$$2I, 1C, 2PM, 3M$$

Question 6

A 7-year-old child is losing their primary teeth. Which teeth are most likely to be replaced first by permanent teeth?

Accepted Answer

Incisors

Question 7

Which of the following statements about the dental formula is correct?

Accepted Answer

The permanent dental formula includes premolars, while the primary does not.

Question 8

If a dentist counts 20 teeth in a child's mouth, which formula best describes their dentition?

Accepted Answer

$$2I, 1C, 2M$$ 	ext{ (upper and lower, each side) } 	imes 2$

Question 9

Which tooth type is present in both primary and permanent dentition?

Accepted Answer

Incisor

Question 10

A patient presents with 2 incisors, 1 canine, 2 premolars, and 3 molars in one quadrant of their mouth. Which dentition do they have?

Accepted Answer

Permanent

Immune, Respiratory, and Digestive Systems: Structured Study Notes

Study Guide - Practice Questions