Wisdom teeth, also known as third molars, can sometimes be absent in individuals, and it's possible to have fewer than four. Impacted wisdom teeth occur when they grow within the jaw instead of erupting properly, potentially causing pain and damage to adjacent teeth. The term "wisdom teeth" refers to their emergence during late adolescence, a time often associated with increased maturity. Dental professionals can identify the presence of wisdom teeth through X-rays. While some dentists recommend removal as a preventive measure, others suggest that not all wisdom teeth need to be extracted, especially if they are not causing issues. The discussion highlights varying experiences with wisdom teeth, including the challenges faced after their removal and differing opinions on the necessity of extraction.