The retainer does not fit fully
If you have not worn the retainer for a while, the teeth may have shifted slightly. Do not try to force the aligner into place; this can damage both the aligner and the teeth. Let the clinic know and ask for an assessment. For the wear schedule, see How long is a retainer worn?
The retainer feels tight
A slight feeling of tightness is possible in the first days after treatment ends or after a break of a few days. If it does not pass within a few days or gets worse, let the clinic know.
The retainer has cracked or broken
A cracked or broken retainer may no longer hold the teeth in the same way, and it can also create a sharp edge in the mouth. Stop using it and contact the clinic. Details: Why it matters to replace a broken retainer.
The retainer is lost
Contact the clinic without delay; teeth can shift if they are left without an appliance, especially in the first months after treatment. Details: What to do if you lose your retainer
It has changed colour or smells
Discolouration and smell are mostly caused by build-up. Review your daily cleaning routine: Retainer cleaning and care. If there are scratches, cracks or lasting stains, ask your orthodontist whether it needs replacing.
It affects speech or saliva
A slight difference in speech and increased saliva are possible in the first days; you usually get used to it within a few days. If it lasts longer, let the clinic know.
A sore in the mouth or irritated gums
If the edge of the retainer or the wire causes a sore, let the clinic know; orthodontic wax can give temporary relief.
The fixed wire has broken
For details, see our page Fixed retainer care and problems.
For more information, see the retainer guide.
For questions, you can call 0312 911 60 36 or use the form on the contact page.
If part of the appliance or wire has been swallowed, or if there is swelling in the mouth, marked pain or difficulty breathing or swallowing, call 112 without delay or go to the nearest emergency department.
This page is for general information only; your orthodontist decides the type of retainer, the wear schedule and how often you are seen for check-ups.
