The common name for the third and final molars that most people develop is "wisdom teeth." Wisdom teeth are the last set of molars to emerge in the oral cavity, typically during the late teens or early twenties. They are called "wisdom teeth" because they usually appear at a more mature age when a person is considered to have gained some wisdom.
Wisdom teeth can cause various issues, such as impaction (when they don't fully erupt), misalignment, crowding, and potential oral health problems. As a result, it is not uncommon for wisdom teeth to be extracted, especially if they pose a risk to the overall dental health or cause discomfort. However, not everyone develops wisdom teeth, and the number of wisdom teeth a person has can vary from zero to four.