Invisalign has revolutionized orthodontic care, offering a discreet, comfortable, and effective way to straighten teeth without the metal brackets and wires of traditional braces. While many people love Invisalign for its convenience and aesthetic appeal, some mistakenly believe that clear aligners also protect against tooth decay. The truth is that you can still get cavities during Invisalign treatment, and in some cases, you might even be more at risk if you’re not careful. Here’s why cavities can occur and how to prevent them while achieving your dream smile.

Why Cavities Can Happen with Invisalign

Cavities, or dental caries, develop when bacteria in your mouth produce acids that erode tooth enamel. This process is usually fueled by leftover food particles and sugary or acidic drinks. When wearing Invisalign aligners, your teeth are covered for most of the day—usually 20 to 22 hours daily—which can create the perfect environment for decay if your teeth aren’t clean before putting the trays back in.

Here’s what makes cavities more likely during Invisalign treatment:

• Trapped bacteria and food particles: If you don’t brush and floss after eating, bacteria and food debris can become trapped between your teeth and aligners. Since the trays create a tight seal, they can trap acids against your enamel, accelerating the decay process.
• Reduced saliva flow: Normally, saliva helps wash away food particles and neutralize acids in your mouth. With aligners on, saliva can’t reach all areas of your teeth as easily, meaning acids can linger longer and do more damage.
• Frequent snacking or sipping: Invisalign wearers must remove aligners when eating or drinking anything other than water. However, if you snack frequently or sip sugary drinks while wearing your trays, you increase your risk of cavities because your teeth are exposed to sugar and acid more often.

How to Prevent Cavities During Invisalign Treatment

The good news is that preventing cavities while wearing Invisalign is completely doable—it just requires a little extra diligence in your oral hygiene routine.

Brush and Floss After Every Meal

Before putting your aligners back in, always brush and floss thoroughly. This ensures that no food particles or plaque are trapped against your teeth.

Rinse Your Aligners Regularly

Clean your aligners at least twice daily with a soft toothbrush and Invisalign cleaning crystals or mild, clear soap. Avoid hot water—it can warp the trays.

Limit Sugary and Acidic Foods

Try to cut back on sweets, soda, and other sugary treats that feed cavity-causing bacteria. When you do indulge, brush before reinserting your aligners.

Drink Plenty of Water

Staying hydrated helps stimulate saliva flow and wash away bacteria. Water also helps keep your aligners clean and odor-free.

Keep Up with Dental Checkups

Continue visiting your dentist for regular cleanings and checkups throughout your Invisalign treatment. Your dentist can spot early signs of decay and help you maintain optimal oral health.

Invisalign can give you the beautiful, straight smile you’ve always wanted, but maintaining healthy teeth along the way is key. By practicing excellent oral hygiene and making smart food choices, you can protect your smile from cavities while your aligners work their magic. Remember: the goal isn’t just a straighter smile—it’s a healthier one, too.

About the Author

Dr. Jayson Voto has 12 years of experience practicing dentistry. He is a 2006 graduate of the University of Oklahoma College of Dentistry. To stay current in his field, Dr. Voto is a member of the American Dental Association, the American Orthodontic Society, the Oklahoma Dental Society, and the Tulsa Dental Society. He also frequently participates in the SPEAR Study Club and Oil Capital Study Club. Looking for a straighter, healthier smile? We can help with Invisalign! Schedule an appointment online or call our Owasso office at (918) 272-5381.