Final answer:
Deciduous teeth, or baby teeth, are the initial set of 20 teeth that are eventually lost and replaced by 32 permanent teeth from around age 6 to 12, including incisors, canines, premolars, and molars.
Step-by-step explanation:
​Deciduous teeth, commonly known as baby teeth, are the first set of teeth to emerge in humans. In total, there are 20 deciduous teeth that begin to appear around 6 months of age. As a child grows, these teeth are eventually lost and replaced by a set of 32 permanent teeth. This transition typically occurs from around age 6 until about age 12.
The permanent teeth include 8 incisors, 4 canines, 8 premolars, and 12 molars. The replacement sequence generally starts with the eight incisors, followed by the eight premolars, and then the four canines. The second molars emerge around age 11 to 13, and the last to appear are the third molars, or wisdom teeth, usually in late adolescence or early adulthood.