Final answer:
The wisdom teeth are generally the only permanent teeth not to have erupted by adolescence. These third molars typically emerge in late adolescence or early adulthood and are sometimes impacted, requiring potential removal.
Step-by-step explanation:
Generally, all permanent teeth but the wisdom teeth have erupted by adolescence. Permanent teeth are the second set of 32 teeth that emerge mainly during middle childhood and most of which replace deciduous (baby) teeth after they are lost. The first permanent teeth to appear are the eight incisors, followed by the canines, premolars, and molars.
Deciduous teeth start to fall out at about age 6, and by adolescence, most individuals have their complete set of permanent teeth, except for the wisdom teeth, which usually appear in late adolescence or early adulthood. The emergence of the third molars, known as the wisdom teeth, does not occur for most individuals until between the ages of 17 and 25. It is also common for wisdom teeth to become impacted and remain undeveloped beneath the gums, which can require orthodontic surgery to remove.