Can I Get Cavities During Invisalign Treatment?

February 21, 2025

Smiling woman holding Invisalign aligner.

You may think that the clear Invisalign trays covering your teeth will shield your smile from harmful bacteria that can cause cavities. Not true! Read on to learn why a solid, consistent oral hygiene routine is key during Invisalign treatment for avoiding such dental problems.

Daily Brushing and Flossing is Crucial

Bacteria that make their home in the mouth mix with food particles and saliva to produce acid that attacks the enamel protecting the teeth. It is recommended to brush twice a day in the morning and night for two minutes and floss daily to remove bacteria, debris, and other harmful material.

For Invisalign wearers, this bacteria can get trapped in the warm, closed-off environment between the retainer and teeth, leading to a much higher risk of tooth decay.

 If You Can, Brush After Meals

If possible, go above and beyond the twice-daily recommendation and brush after every meal to clean away food particles before they settle in.

Invisalign wearers should wait 15-20 minutes after eating to brush as food acidity weakens the enamel. If you must wear your aligners right after your meal, rinse your tray and mouth before putting it in, then fully brush after the appropriate amount of time.

Clean Your Trays   

Keeping your teeth pristine may seem like an obvious must, but did you know that cleaning your Invisalign trays is just as important?

Here is a guideline for washing your Invisalign aligners:

  • Use lukewarm water, unscented antibacterial soap (not toothpaste), and a soft-bristle toothbrush to gently scrub your retainers.
  • Rinse and clean your trays whenever you wake up in the morning.
  • Rinse your trays when you remove them.
  • Soak your aligners every few days using an Invisalign cleaning solution to remove bacteria and keep them looking pristine.

What Happens if I Do Form a Cavity?

A dentist will need to insert a filling in the cavity should you develop one.

This procedure should not cause a major disruption in your Invisalign treatment, though some wearers noted some soreness and discomfort when wearing their trays over a tooth with a filling. A larger dental restoration, such as an inlay or a crown, can cause the fit of the retainer to feel off, though your dentist can adjust your tray as needed so it has the right fit.

While it is possible to get a cavity during Invisalign treatment, a daily oral hygiene routine consisting of tooth and tray cleaning should avoid such issues and keep you on the path to a straighter, more confident smile!

About the Author

At Island Coast Dentistry, Dr. Jeffrey Skupny and his team offer an array of services from Invisalign treatment to routine cleanings to emergency dentistry. A second-generation dentist, Dr. Skupny is a member of the Academy of General Dentistry, the International Team for Implantology, and the American Academy of Cosmetic Dentistry, as well as the Naples Chamber of Commerce. If you’re interested in Invisalign and want more information, visit Dr. Skupny and his team online or call (239) 261-5566.