How many teeth are present in deciduous dentition?

The correct answer is 20 teeth, which is the typical number of teeth present in deciduous dentition, commonly known as primary or baby teeth. Deciduous dentition consists of a total of 10 teeth in each dental arch: 2 incisors, 1 canine, and 2 molars in both the upper and lower jaws. Since each arch has 10 teeth, this leads to a total of 20 teeth in primary dentition.

In contrast, the other options do not accurately reflect the standard count of deciduous teeth. For example, the option suggesting 24, 16, or 32 teeth exceeds or falls short of the established number for primary teeth. The complete set of permanent teeth, including the molars, typically totals 32, but this does not apply to deciduous dentition. Thus, understanding that the primary teeth number is limited to 20 is essential for recognizing the stages of dental development in children.