You might think dentists are fearless when it comes to their own teeth, but even they have clear rules about what they will—and won’t—put in their mouths. After all, they see firsthand the damage that certain habits can cause. Avoiding these items can help keep your smile healthy, prevent emergencies, and save you a trip to the dentist’s chair.

Learning what dentists steer clear of is a simple way to protect your teeth while maintaining good oral health.