Clear aligners have become one of the most popular ways to straighten teeth thanks to its comfort, convenience, and nearly invisible appearance. But some patients mistakenly believe that wearing Invisalign prevents cavities. Unfortunately, that’s not the case. While aligners offer many advantages, it’s still possible to get cavities during treatment—especially without proper oral hygiene. Let’s explore why this happens and how you can keep your teeth healthy while your smile transforms.
Why Cavities Can Still Happen with Clear Aligners
Cavities develop when bacteria in your mouth produce acids that erode the enamel, usually after feeding on leftover sugars and food particles. Invisalign aligners don’t cause cavities themselves, but they can create an environment where bacteria thrive if your teeth and trays aren’t cleaned properly.
Because aligners fit snugly over your teeth, they can trap food debris and plaque underneath. When worn for 20 to 22 hours a day—as recommended—this can lead to prolonged exposure to acids that cause decay. Essentially, if bacteria are present when you put your aligners in, you’re sealing them in with your teeth, giving them the perfect place to cause damage.
Common Causes of Cavities During Treatment
Wearing Aligners Without Brushing First
One of the most common mistakes patients make is reinserting their aligners after eating or drinking without brushing their teeth first. Even small amounts of food residue can lead to plaque buildup and cavities.
Snacking Frequently
Invisalign requires you to remove your aligners before eating, which can make frequent snacking inconvenient. However, if you do snack often and don’t brush afterward, it increases your risk of cavities by constantly feeding oral bacteria.
Not Cleaning Aligners Properly
Aligners need to be cleaned daily to remove bacteria and saliva buildup. Failing to do so can lead to reinfection each time you put them back in your mouth.
Drinking Sugary or Acidic Beverages with Aligners In
Water is the only safe drink while wearing aligners. Any other beverage—even clear ones like sports drinks or flavored water—can get trapped under the trays, coating your teeth in sugar and acid.
How to Prevent Cavities During Treatment
- Brush and floss after every meal: Always clean your teeth before putting your aligners back in. Carry a travel toothbrush and toothpaste with you so it’s easy to maintain your routine on the go.
- Clean your aligners daily: Rinse them with lukewarm water and use the recommended cleaning crystals or solution to remove buildup.
- Drink only water with aligners in: Avoid sugary or acidic drinks to prevent enamel erosion.
- Limit snacking: This gives your teeth time to recover between meals and reduces plaque buildup.
- Visit your dentist regularly: Even while straightening your teeth, it’s important to schedule regular checkups and cleanings.
Clear aligners are an effective and comfortable way to achieve the straight smile you’ve always wanted, but it doesn’t make you immune to cavities. With consistent oral hygiene and mindful habits, you can protect your teeth and ensure your results are both beautiful and healthy. Straightening your teeth should make your smile stronger, not weaker, and with proper care, it will.
About the Author
Dr. Tracy D. Jenkins is a meticulous man who is passionate about dentistry. He earned his dental degree from the renowned Indiana University School of Dentistry. After school, he continued his education with extensive dental implant training at the White Capp Institute Center for Dental Implant Training. Are you looking for a clear solution to misaligned teeth? We can help with clear aligners! Schedule an appointment online or call (208) 522-8061.