Short answer: With clear aligner treatment, people usually feel pressure and tenderness rather than pain. This feeling is mostly noticeable in the first days of treatment and for 1–3 days after switching to each new aligner, then it eases. It varies from person to person.
Why does it happen?
Each new aligner applies a light force to the teeth matching the small planned movement. As the tissues around the tooth adapt to this force, the teeth may feel tight or snug, or tender when chewing. This is a normal response showing that the teeth are moving.
When is it felt most?
- In the first week of treatment
- In the first days after switching to each new aligner
- After attachments have been bonded
- Around the times when interproximal reduction (IPR) is carried out
What can help?
- Switch to a new aligner in the evening: Spending the first hours asleep makes the pressure less noticeable.
- Choose soft foods: For the first day or two, foods such as soup, yoghurt and mash make chewing easier.
- Keep the aligners in: Taking them out often can make the pressure start again each time you put them back.
- Cold water: Drinking cold water can be soothing for some people.
- Pain relief: If needed, ask your clinician or pharmacist which medicine you can take.
Is it different from braces?
With clear aligners, the force is divided into small steps with each aligner, and the tooth is in contact with a smooth-edged aligner. With braces, brackets and wires rubbing against the cheeks and lips can cause additional discomfort. Even so, tenderness can occur with both methods while the teeth are moving. For a general comparison of the two, see our page clear aligners or braces.
When should you contact the clinic?
- If tenderness lasts longer than a week or keeps getting worse
- If there is sharp, constant pain in a single tooth
- If your gums are swollen, bleeding or have a sore
- If the aligner doesn't fit or is cracked
If the edge of an aligner is irritating your gums or tongue, take a look at the tips in our article what to do if your clear aligners are cutting your gums.
Quick answers
My teeth feel slightly loose after changing aligners. Is that normal?
A slight feeling of movement can be normal in teeth that are moving. If the looseness is noticeable and increasing, let the clinic know.
Can I leave my aligners out for a day while my teeth are tender?
Taking the aligners out eases the pressure temporarily, but it starts again each time you put them back and delays treatment; this is not recommended.
Is the pressure different for children and teens?
Although individuals differ, younger patients usually go through a similar adjustment period.
How do you find out what suits you?
The information here is general; the right plan for you is decided through an oral examination, a digital scan and a clinical assessment. At our clinic in Oran, Çankaya, Ankara, we go through these topics and your questions during your first orthodontic examination. If you would like to see the treatment steps in advance, take a look at our clear aligner treatment process page.
