Request an Appointment

7 Things Your Dentist Would Never Put in Their Mouth

May 2, 2025

Dentist smiling and working on patient.

Your dentist knows a thing or two about keeping a healthy mouth. After all, they’ve seen firsthand what certain habits, foods, and objects can do to teeth and gums over time. So, if you’ve ever wondered what a dental professional avoids putting in their mouth, here’s your answer. These are 7 things your dentist would never dare to let near their teeth, and it might help you avoid an emergency dental situation.

1. Ice Cubes

Chewing on ice might seem harmless, but it’s one of the most common causes of cracked or chipped teeth. The cold temperature combined with the hardness of ice can damage tooth enamel and lead to small fractures. Over time, this can cause sensitivity and even require crowns or fillings to repair.

Dentists know that even if teeth feel strong, they’re not meant to crush hard objects like ice.

2. Fingernails

Nail biting is a habit many people pick up during stress, but dentists see the damage it can do. Regularly biting your nails can cause tooth misalignment, enamel wear, and even small chips. Not to mention, fingernails are often covered in bacteria, which can be introduced into your mouth and gums.

A dentist will always keep their hands clean and their nails out of their mouth.

3. Popcorn Kernels

Popcorn is a favorite snack, but the un-popped kernels at the bottom of the bowl can be dangerous. Biting down on one can cause a sudden, sharp crack in a tooth or damage a dental filling or crown. Dentists know to eat popcorn carefully and avoid the kernels altogether.

4. Bottle Caps or Packaging

Using your teeth to open a bottle, tear plastic, or rip off a clothing tag might feel convenient, but it’s a recipe for dental disaster. These actions can cause tooth fractures, gum injury, and even jaw strain. Dentists always reach for scissors or a proper opener instead of turning their teeth into tools.

5. Sticky, Sugary Candies

Hard or sticky candies like caramels, toffee, or lollipops may be delicious, but they’re notorious for causing cavities and damaging dental work. Sticky sweets cling to teeth, feed harmful bacteria, and are difficult to clean off completely. Dentists, who understand how sugar interacts with enamel, tend to skip these treats, or at least brush right after enjoying one.

6. Lemons and Acidic Foods (Eaten Frequently)

Sucking on lemons or frequently sipping acidic drinks like vinegar or soda can erode tooth enamel over time. Even though these foods seem healthy, their acid content can soften enamel and lead to sensitivity and decay. Dentists will often drink acidic beverages through a straw or rinse with water afterward.

7. Chewing on Pens or Pencils

It’s a common habit while thinking or working, but it puts a surprising amount of pressure on your teeth. Chewing on non-food objects like pens can cause uneven wear, tooth shifting, and jaw discomfort, all things your dentist would rather avoid.

Your dentist practices what they preach when it comes to protecting their teeth. Avoiding these everyday habits and objects can go a long way toward maintaining a strong, healthy smile. If your dentist won’t put it in their mouth, maybe you shouldn’t either!

About the Author

Dr. Christopher S. Cannady is a graduate of the Nova Southeastern University College of Dental Medicine. Prior to opening his own practice, he gained experience working as a dentist along the Atlantic coast of Florida. Dr. Cannady has taken nearly 300 hours of continuing education coursework and is actively involved with the American Dental Association, Florida Dental Association, Academy of General Dentistry, and American Academy of Implant Dentistry. If putting things in your mouth that you shouldn’t has led to an emergency situation, schedule your appointment online now or call our Clearwater office at (727) 441-3523.

Ask Us a Question