My aligners hurt my gums
Aligners can rub the gum edge when sharp, distorted, poorly seated, or worn during adjustment, and persistent sores need review.
The short answer
A clear aligner that hurts the gums is often rubbing or pressing on soft tissue, and the fit should be checked before the sore worsens.
How do aligners cover the teeth and gum margins?
Aligners are thin thermoplastic trays designed to cover the teeth and gum margins. Pain may indicate a sharp projection, distortion, poor seating, or pressure on the gingiva rather than normal tooth movement.
What can you check before contacting the orthodontic team?
Rinse the tray and inspect its edge, but do not cut or reshape it yourself. Use orthodontic wax as a temporary barrier only if your clinician has advised it, and contact the orthodontic team for a fit check.
When does aligner gum pain need orthodontic care?
Contact the orthodontic team if pain persists, a cut enlarges, the tray will not seat, or swelling or discharge appears. Facial swelling, fever, or trouble swallowing needs urgent care.
What should you ask about the sore aligner edge?
Ask where the tray is contacting the gingiva, whether the next tray should be delayed, and whether the edge can be safely smoothed in the clinic. Ask how to clean the sore while maintaining tooth movement.
Frequently asked questions
Should I force the aligner into place?
No. A tray that will not seat or causes focal gum injury should be checked by the orthodontic team.
Can an aligner cause a gum ulcer?
Yes. Repeated contact from a rough or poorly fitting edge can traumatise the mucosa.
Who wrote this page
This library is published by Dental Nation, a licensed dental group practising in the United Arab Emirates. Pages are written and overseen by the same clinical team that treats patients in our clinics, and are held to a fixed editorial standard for safety and accuracy.
This page is patient education, not medical advice, and cannot replace an examination. Anything urgent — facial swelling, trauma, uncontrolled bleeding or severe pain — needs a dentist or emergency care now.