Invisalign Soreness After Changing Trays
October 6, 2025
Starting a new set of Invisalign aligners is an exciting step on your journey to a straighter smile. However, it's common to feel some pressure or soreness as your teeth begin to move into their new positions.
This temporary discomfort is a productive part of your treatment, showing that your aligners are working to create your new smile. Understanding the process and asking your local dentist for advice can help you manage your experience with confidence.
Why Your Teeth Feel Sore with New Aligners
Pressure & Tooth Movement
Each new set of aligners is designed to apply gentle, consistent pressure to your teeth. This pressure is what guides your teeth into new positions over time. The soreness you feel is your mouth's natural response to this movement as your teeth and gums adjust.
Does Soreness Mean Your Invisalign Is Working?
Yes, mild soreness or a feeling of tightness often means your aligners are doing their job. It shows your teeth are shifting as planned. At the same time, however, some tray changes may cause very little discomfortβwhich is also completely normal, as every stage of movement is different.
How Your First Tray Differs from the Rest
The first set of trays often brings the most noticeable adjustment period. This is because your teeth are not yet used to the sensation of being moved. You'll likely find that subsequent tray changes become much easier to manage.
What to Expect from Aligner Discomfort
How Long the Soreness Lasts
For most people, the soreness after changing trays is most apparent for the first 24 to 72 hours. After this, the pressure usually eases as your teeth settle into their new position. By the end of the week, your aligners should feel much more comfortable.
Common Sensations with New Trays
When you switch to a new tray, you might experience a few different sensations. It helps to know what is typical so you can feel prepared:
- A feeling of tightness when you first put the aligners in
- General sensitivity in your teeth & gums
- Discomfort when you bite down or chew food
- Soreness that seems focused on just one or two teeth
6 Tips to Manage Soreness & Stay Comfortable
- Switch to New Trays at Night
Change to your new aligners just before you go to sleep. This allows your teeth to begin adjusting while you rest. You can sleep through the initial hours of potential discomfort. - Stick to Softer Foods for a Day or Two
Give your teeth a break by choosing soft foods after a tray change. Think smoothies, yogurt, soup, and mashed potatoes. Avoid hard or crunchy foods that require a lot of chewing. - Use a Cold Compress or Drink Cold Water
Applying a cold compress to the outside of your cheek can help soothe sore areas. Sipping cold water throughout the day may also provide some temporary relief by numbing the area slightly. - Use Aligner Chewies as Instructed
Aligner “chewies” are small foam cylinders you can bite on to help seat your trays correctly. Using them for a few minutes each day helps your aligners fit snugly, which can improve both comfort and effectiveness. - Try Over-the-Counter Pain Relief
If the soreness is bothering you, an over-the-counter pain reliever like acetaminophen may help. Always follow the package directions for proper use. This can make the first day or two more manageable. - Maintain Your Aligner Schedule
It can be tempting to remove your aligners when they feel sore, but it's important to wear them for the recommended 22 hours per day. Taking them out too often can slow your progress and prolong discomfort.
The Role of Your Dentist in Your Invisalign Journey
Communicate with Your Dental Team
Your comfort is important to us. If you experience pain that is severe or does not go away after a few days, let your dental team know. Open communication helps us support you throughout your treatment.
Why Regular Check-Ins Matter
Your regular dental appointments are a key part of your treatment. During these visits, we check that your teeth are moving as planned and that your aligners fit correctly. It's also the perfect time to ask questions or share any concerns you may have.
A Smooth & Successful Aligner Experience
Remember Your Treatment Goals
On days when your teeth feel a bit sore, try to focus on the end result. Each tray change is one step closer to the smile you want. Thinking of the temporary discomfort as a productive part of the process can help you stay motivated.
Trust the Process
Adjusting to new aligners is a normal part of Invisalign treatment. By following these tips and staying in touch with your dental team, you can navigate your journey with more comfort. You are making steady progress toward a healthier smile.Your Invisalign journey is a partnership between you and your dental team. If you have any questions about your treatment or need advice, the Westwood Dental team is here to help. Contact us today to discuss your progress or schedule your next appointment.