Question

The primary dentition in human differs from permanent dentition in not having one of the following types of teeth.

• A. Incisors
• B. Canine
• C. Premolars
• D. Molars

Answer 1

Answer: (C)

Premolars

Starting at the midline, the permanent dentition is comprised of incisors, canines, premolars and molars. The primary dentition is the same except it has no premolars. The primary dentition is made up of central incisors, lateral incisors, canines, first molars, and secondary molars; there is one in each quadrant, making a total of four of each tooth. All of these are gradually replaced with a permanent counterpart except for the primary first and second molars; they are replaced by premolars. In the primary dentition there are a total of twenty teeth: five per quadrant and ten per arch.