Why Do We Have Wisdom Teeth?

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Why Do We Have Wisdom Teeth?

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Wisdom teeth (or third molars) are a bit of a mystery. Why would we be given teeth that, in most cases, just end up being pulled? While wisdom teeth are something modern humans have come to dread, the function of wisdom teeth dates back to our early ancestors.

Why We Get Wisdom Teeth

Our earliest ancestors survived on a diet of raw meat, nuts, roots, berries, and leaves. They didn’t have the luxury of using knives to cut and prepare food and cooking their meat wasn’t even an option. Chewing these tough, coarse, and rugged foods required a broader jaw and strong molars—including the wisdom teeth.

Having all three molars was vital in order for our ancestors to be able to eat the foods necessary for survival. The larger jaw that was common in our ancestors easily accommodated the wisdom teeth. This allowed them to erupt into the mouth normally.

The prevalence of wisdom teeth is one of the ways that anthropologists can determine the age of skeletons. For example, the “Turkana Boy” skeleton at the Smithsonian National Museum of Natural History dates to 1.6 million years ago. Researchers believe he was eight or nine years old due, in part, to the fact that his third molars had not yet erupted when he died.

Why We Don’t Need Wisdom Teeth Today

Fast-forward to today and take a look at what we are eating. More importantly, look at how we prepare the food we eat.

We cut, dice, chop, boil, steam, and bake almost everything we eat. All of that food preparation has made eating a pretty easy feat to accomplish. In fact, experts believe that our jawline has become less broad and smaller over the years due to how food is prepared and consumed. That is the reason why our wisdom teeth need to be extracted

Why Do They Become a Problem?

As modern humans took shape, our overall structure changed. Over time, the jawbone became smaller and all 32 teeth could no longer fit properly. As wisdom teeth erupt they can crowd the other teeth and cause problems. Some even become “impacted” and do not fully erupt because there is no room and they are blocked by other teeth.

Not everyone has wisdom teeth, however. At least, they may never erupt beyond the surface. There are a number of reasons for this, according to researchers. These include the angle and root development of the tooth, it’s size, and the space that’s available in the jawbone.

Even if the wisdom teeth are not causing a problem in terms of spacing, wisdom teeth may be extracted to prevent future issues such as the development of diseases. These teeth are so far back in the mouth that proper care to keep them healthy can be difficult. A dentist may advise a patient to have their wisdom teeth pulled for long-term health.

Why Are They Called “Wisdom” Teeth?

Your third molars are the last set of teeth to appear in the mouth. They typically erupt between 17 and 21 years old. Due to this later age, they became known as “wisdom” teeth. It’s likely that the nickname has something to do with the adage or belief that “with age comes wisdom.”

Do I Need to Have My Wisdom Teeth Removed?

Your dentist says you need to have your wisdom teeth taken out. But they don’t hurt, you say, so why remove them?

These days, oral surgery to remove wisdom teeth is a standard practice lmost a rite of passage for young adults. It’s not always necessary, though.

Preventive Efforts

Still, just because your wisdom teeth aren’t a source of pain doesn’t mean there’s nothing wrong. The teethcould be stuck, or impacted. That means they can’t break through your jaw and into your mouth. Maybe your mouth is too small to make room for them, or the teeth could be growing at an angle to other teeth. They can damage the tooth next door if they push up against it.

Some dentists take out healthy molars to prevent problems later on. As you age, the bones in your mouth get harder. That makes your teeth tougher to remove.

If you wait, you could have problems after surgery that range from heavy bleeding and fractured teeth to severe numbness and minor loss of movement in your jaw. These troubles could last a few days or a lifetime.

When Is Removal Needed?

When wisdom teeth cause problems, or X-rays show they might down the line, they need to come out. Other good reasons to take them out include:

  • Cavities: Swollen gums can create pockets between teeth that help bacteria grow and cavities form.Damage to other teeth: That extra set of molars can push your other teeth around, causing mouth pain and bite problems.
  • Jaw damage: Cysts can form around the new teeth. If they aren’t treated, they can hollow out your jaw and damage nerves.
  • Sinus Issues: Problems with wisdom teeth can lead to sinus pain, pressure, and congestion.
  • Inflamed Gums: Tissue around the area can swell and may be hard to clean.
  • Alignment: Impacted wisdom teeth can cause problems with crowding of other teeth and even make treatment to straighten other teeth necessary.
  • Your dentist will look at the shape of your mouth and the position of your teeth to make a decision. Your age plays a role, too.

    Still not ready to part with your molars? You can ask your dentist to explain what he sees with your teeth. In many cases, you can wait several months to see if things change before making your decision. But if you have pain or notice swelling or a bad odor near your back teeth, it may be time for a second look.

We love our patients and love to help them form healthy dental life that will last them a lifetime. For more information call us today to answer all of your questions so get appointment today.

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