Why We Have Wisdom Teeth

Wisdom teeth are often viewed as a dental nuisance, especially since many people need them removed. This leads to a common question: why do we have wisdom teeth at all? The answer lies in human evolution, changes in diet, and how our jaws have developed over time. Understanding their original purpose helps explain why wisdom teeth can cause problems today.

The Evolutionary Purpose of Wisdom Teeth

Wisdom teeth, also known as third molars, were essential for our early ancestors. Thousands of years ago, human diets were much tougher and included raw plants, roots, nuts, and uncooked meat. These coarse foods caused significant tooth wear. Having an extra set of molars helped replace worn-down teeth and provided additional chewing power. Wisdom teeth typically emerged in early adulthood, around the time when earlier molars had already experienced years of heavy use.

Changes in the Human Jaw

As human diets evolved, so did our jaws. Cooking food made it softer and easier to chew, reducing the need for large jaws and extra teeth. Over time, human jaws became smaller, but the number of teeth did not change at the same pace. As a result, many modern mouths simply don’t have enough space to accommodate wisdom teeth comfortably.

Why Wisdom Teeth Often Cause Problems

Because of limited space, wisdom teeth often become impacted, meaning they don’t fully erupt through the gums. Impacted wisdom teeth can grow at awkward angles, press against neighboring teeth, or remain trapped beneath the gumline. This can lead to pain, swelling, infections, cavities, and damage to surrounding teeth. Even wisdom teeth that partially erupt can be difficult to clean, increasing the risk of decay and gum disease.

Do We Still Need Wisdom Teeth Today?

For most people, wisdom teeth are no longer necessary. Modern dental care, improved oral hygiene, and softer diets mean we don’t rely on extra molars for chewing. Some individuals are even born without wisdom teeth, a trait that’s becoming more common as human evolution continues. In rare cases, wisdom teeth can erupt properly and remain healthy, requiring only routine monitoring.

When Wisdom Teeth Are Removed

Dentists often recommend removing wisdom teeth if they’re likely to cause problems or if there isn’t enough space for them to erupt properly. Removal is commonly done during the late teens or early twenties, when roots are less developed and healing is typically easier.

We have wisdom teeth because our ancestors needed them, even though many of us no longer do. While they once played an important role in survival, changes in diet and jaw size mean wisdom teeth are often more trouble than benefit today.

About the Practice

Need to have your wisdom teeth extracted? Turn to our expert team at Bear Creek Family Dentistry. We have sedation options available if you’re acutely anxious to see the dentist, and you can trust our skilled dental team that treats your comfort as a top priority. For your convenience, we have late, early, and weekend appointments available. Schedule your appointment online or call one of our conveniently located offices in your area.