Cavities During Invisalign Treatment? What You Need to Know

September 2, 2025

Invisalign clear aligner in container

Invisalign is a great way to straighten your smile discreetly, but some patients wonder: does wearing aligners protect teeth from cavities? Since the trays fit snugly over your teeth, it might seem like they provide a shield. However, it is still possible to develop cavities during Invisalign treatment if you’re not careful. Here’s why cavities can happen, what to do if you notice one, and how to prevent them while wearing aligners.

Why Cavities Can Still Develop

Even though Invisalign trays cover your teeth, they don’t act as a barrier against bacteria. If you don’t brush and floss thoroughly before putting your aligners back in, food particles and plaque can become trapped between the trays and your teeth. Since aligners are typically worn 20–22 hours a day, this creates the perfect environment for bacteria to grow and weaken enamel, leading to cavities.

Signs of a Cavity During Invisalign

Cavities can be sneaky, especially while wearing aligners. Watch for common symptoms like tooth sensitivity, pain when biting, or small dark spots on your teeth. If you notice an unusual taste or lingering discomfort, it’s best to have your dentist examine the area as soon as possible. Catching a cavity early prevents it from becoming worse and disrupting your Invisalign progress.

What to Do if You Get a Cavity

If a cavity forms, don’t panic. Your dentist can treat it with a filling or another appropriate restoration. In most cases, you can continue Invisalign treatment after your tooth is repaired. Occasionally, your dentist may need to adjust your aligners if your restoration changes the shape of your tooth. Prompt treatment helps you stay on track with your orthodontic plan.

How to Prevent Cavities During Invisalign

The good news is that cavities are preventable with the right care. A few simple habits can go a long way:

  • Brush after every meal before putting your aligners back in
  • Floss at least once a day to remove trapped food particles
  • Rinse aligners daily to keep them clean
  • Avoid sipping sugary drinks while wearing aligners

By keeping up with your oral hygiene routine and staying consistent with dental checkups, you can enjoy your Invisalign journey without interruption.

Wearing aligners doesn’t make you immune to cavities, but good oral care habits help keep your teeth healthy and your treatment moving forward.

About the Practice

At Cambridge Square Dental, we are dedicated to helping patients achieve healthy, beautiful smiles with personalized orthodontic care. Dr. Yana provides advanced Invisalign treatment alongside preventive and restorative dentistry, ensuring your teeth stay strong throughout the process.

Call us at (732) 972-6400 or request an appointment online.