Fixed retainers: how long to wear them, care and what to do if one comes loose
Medically reviewed by Dra. Carolina Carvajal, Orthodontics Specialist
Published · 3 min read
Short answer
A fixed retainer is a thin wire bonded behind your teeth that keeps them from shifting after orthodontics. It's usually kept for many years, needs daily flossing and regular check-ups, and if it comes loose it should be repaired promptly.
What does a retainer do?
After braces come off or aligner treatment ends, teeth tend to drift back. Bone and gums need time to stabilize, and natural pressure from the tongue, lips and aging continues throughout life.
The retainer protects your orthodontic result. Without it, teeth — especially the lower front ones — commonly crowd again.
Fixed vs. removable retainers
They are often combined: a fixed wire inside plus a removable retainer at night.
- Fixed: a wire bonded behind the front teeth. Invisible, impossible to forget and always working, but it requires more careful cleaning.
- Removable: a clear or wire retainer you put in and take out. Easy to clean, but it only works if you wear it as instructed.
How long should you wear it?
There's no single timeline. Retention is now considered long-term: many orthodontists recommend keeping a fixed retainer for years, as long as it's in good condition and hygiene is good. Your orthodontist sets the plan for your case.
How to clean a fixed retainer
Plaque and tartar build up easily around the wire. To keep it clean:
- Brush carefully behind your teeth, angling the brush toward the wire.
- Use a floss threader or stiff-tipped floss to pass under the wire every day.
- An interdental brush or water flosser can help.
- Keep up with professional cleanings — tartar behind the lower front teeth is very common.
What if it comes loose or breaks?
If a bonding point feels loose, the wire has moved or a tooth is no longer attached, book an appointment as soon as possible. Meanwhile, don't try to glue or bend it yourself and avoid biting hard foods with your front teeth.
A loose retainer no longer protects those teeth and can sometimes even move them. Repairing it early is usually simple — and can be done during a short visit to Medellín.
Frequently asked questions
No, as long as it's kept clean and checked regularly. The most common issue is tartar buildup when people don't floss daily.
Your orthodontist removes it when appropriate. Removing it without follow-up raises the risk of your teeth moving again.
It's unlikely while the retainer is fully bonded. If one point comes loose, teeth in that area can move — that's why prompt repair matters.
It depends on whether it's a spot repair or a new retainer. You get a written quote after we check it.
This article is for information only and does not replace an in-person dental evaluation.