Which types of teeth are not included in primary dentition?

Primary dentition, also known as deciduous or baby teeth, consists of a specific set of teeth that includes incisors, canines, and molars. In total, there are 20 primary teeth, comprising 8 incisors, 4 canines, and 8 molars.

In adults, there are pre-molars (bicuspids) and third molars (wisdom teeth) that are not present in primary dentition. Pre-molars emerge after the primary teeth, as part of the permanent dentition that develops once children reach a certain age, typically around 6 years old and onwards. Third molars usually appear in late adolescence or early adulthood. Therefore, pre-molars and third molars are not included in primary dentition because they do not exist in the mouth as a child is developing.

Understanding the classification of teeth within primary and permanent dentitions helps clarify the dental development process and the sequential nature of how teeth emerge.