Busting 23 Crazy Dental Myths: Truths About Teeth You Need to Know

From sneaky teeth that "move at night" to fillings that "pick up radio signals"—we’ve heard it all! Dive into the wild world of dental myths as we tackle the most outrageous claims about teeth, gums, and oral health with facts, science, and a smile.

Debunking the Wildest Misconceptions About Your Mouth


Introduction: The Curious Case of Dental Myths

Dentistry: a land of white coats, tiny mirrors and a surprisingly large collection of bizarre myths. Over the years, we have heard it all, from teeth affecting eyesight to tooth fillings picking up the latest radio hits. Today, let us journey through some of the wildest things patients have said and bust these myths with science, facts and just a dash of humor.


1. “Will taking out my wisdom teeth affect my eyesight?”

  • The Myth: Removing upper wisdom teeth might blind you.
  • The Truth: No, your teeth and eyes don’t have a secret handshake. There is no anatomical connection that could affect your vision. Numerous studies confirm that oral surgery does not impact your sight. The only thing you will see after wisdom tooth removal is better oral health.

2. “I use only mouthwash and don’t brush my teeth. It works for me.”

  • Reality Check: That is like showering with perfume instead of water. Mouthwash can freshen breath but does not remove plaque or food debris. Brushing and flossing physically clean teeth. Think of mouthwash as the cherry on top, not the whole cake.

3. “Why fix a cavity if it doesn’t hurt?”

  • Fact: Cavities often don’t hurt until they reach the nerve. Early treatment is similar to putting out a spark before it becomes a fire. If you wait for pain, you might need a root canal instead of a simple filling.

4. “My child’s baby teeth don’t matter, they are falling out anyway.”

  • Truth Bomb: Baby teeth are space holders for permanent teeth. Losing them too soon can cause crowding and orthodontic issues later. Plus, decay can spread to adult teeth developing underneath.

5. “Dental work is too expensive!”

  • Perspective Shift: Compared to what? Precision dental work involves millimeter-level craftsmanship in a dark, wet, moving environment. Think of a $200 pair of shoes worn 24/7, exposed to constant stress, acid, bacteria, they wouldn’t last a week. Yet dental fillings hold strong for years.

6. “I brush with baking soda and never take my dentures out.”

  • Uh-oh: Baking soda is abrasive and can wear enamel. As for leaving dentures in? That invites mold and infections. Dentures need a break, so do your gums.

7. “Insurance only covers cleanings every 9 months, so that’s all I need.”

  • Fact: Insurance limits don’t define health needs. Your insurance plan has not assessed and evaluated your teeth, your insurance plan did not have formal dental school training. It may know the insurance lingo but not your teeth.

8. “Mouthwash is cheaper than treating bad breath.”

  • Spoiler: Bad breath is often from gum disease or decay. Mouthwash masks it but does not fix it. Treat the cause, not the symptom.

9. “My last dentist put his knee on my chest to pull a tooth.”

  • Clarification: That is dental folklore. Modern techniques don’t involve WWE moves. If that really happened, it is time to switch dentists.

10. “My baby sucked all the Calcium from my teeth.”

  • Science Says: Pregnancy does not drain Calcium from your teeth. Hormonal changes can affect gums but with proper care, your teeth stay strong.

11. “I put hot sauce on a Q-tip to kill my tooth nerve.”

  • Painfully Misguided: Please don’t. You will hurt yourself without fixing the problem. Let’s stick to actual medicine, not condiments.

12. “You should not visit the dentist while pregnant.”

  • Myth Busted: Routine dental care is safe and essential during pregnancy. Untreated gum disease can affect your baby’s health too.

13. “Tooth fillings can pick up radio signals.”

  • Fun Fact: No, your mouth is not a radio antenna. Lucille Ball may have thought so but science disagrees.

14. “Women lose a tooth for every child they have.”

  • Nope: With proper care, motherhood does not mean tooth loss.

15. “I want all my fillings out—they have tracking chips!”

  • Tech Myth: Fillings are not spyware. They are just dental materials, not devices.

16. “Can you just give me dentures now?”

  • Truth: Natural teeth are always best. Dentures are a last resort, not a shortcut.

17. “My teeth play musical chairs at night.”

  • Imagination Level: Expert: Teeth don’t wander in your sleep. If you feel movement, it could be grinding or bite issues, let’s talk about real solutions.

18. “Can I use WD-40 to clean my teeth?”

  • Please Don’t: That is for rusted hinges, not your mouth.

19. “How do you get the nerve to show itself for a root canal?”

  • No Hide and Seek: We don’t need to “see” it. X-rays and precision tools help us find and clean the nerve space.

20. “Can my husband floss my teeth for me?”

  • Romantic, but…: Flossing is a solo sport. But hey, teamwork on oral health is great!

21. “Fluoride slows your brain down.”

  • Debunked: Fluoride in recommended doses strengthens teeth and is safe. The brain remains sharp and the teeth stay strong.

22. “Lions don’t brush, why should I?”

  • Wildlife Wisdom: Lions also don’t live long enough to worry about cavities. Plus, their diet and oral bacteria differ wildly from ours. We eat cake, they don’t.

Conclusion: Don’t Believe Everything You Hear

Dental myths can be entertaining but they also keep people from getting the care they need. Trust your dentist, trust science and remember, just because Uncle Joe said it doesn’t make it true.

Want to find out if Cosmetic Dentistry right for you?

To find out, call MI Dental in Kitchener, ON, at (519) 894-9444 to schedule a no-risk consultation with our dental team.

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