Wisdom teeth are the last set of molars to emerge in the mouth. However, there are instances where they don't erupt. Use this guide to learn more about wisdom teeth and why some people are born without one. 

What Are Wisdom Teeth and When to Remove Them

Wisdom teeth, also known as third molars, are located at the rear end of the mouth. These erupt between 17 to 25 years old when people are "wiser" than a child. Hence, the name wisdom teeth. However, health professionals refer to them as vestigial organs meaning they served a purpose before but are no longer useful for human digestion. This is because people's diets are softer and more refined compared to ancestors that needed an extra set of molars to chew raw plants and animals. Although not useful, most dentists recommend keeping healthy and non-impacted wisdom teeth to help maintain bone in the jaw. 

Unfortunately, according to the American Dental Association, wisdom teeth removal is necessary when there's pain in the area, extensive tooth decay, and damage to nearby teeth. Additionally, consider removal if there is the presence of dentigerous cysts or fluid-filled sac over the unerupted third molar. This can lead to infections and tooth loss in people between 10-30 years old. 

Why Are Some People Born Without Wisdom Teeth

According to a study from Princeton University, 25% of individuals in many human populations lack at least one-third molar. This phenomenon is due to the dramatic increase in brain size affecting the architectural reconfiguration of the skull. As a result, the larger the brain gets, the less room for the last molar to develop. Additionally, adults without third molars often have parents who never got wisdom teeth as well. Another reason is the gradual shift in evolution because of dietary change, where humans no longer need an additional set of molars to chew food. 

If you need wisdom teeth removal, visit Mark Stephens DMD in Richmond, KY. Dr. Mark Stephens and his friendly staff have provided reliable dental services, including dental implants, crowns, full dentures, and veneers, to keep clients' smiles healthy and beautiful. In addition to cosmetic dentistry, they offer emergency care and extraction services. Learn more about the office's services online, and call (859) 626-0069 to schedule an appointment.