A permanent retainer is a thin wire glued to the back of your front teeth after braces or aligners. It holds the teeth in place around the clock, so there’s nothing to remember or lose. It isn’t truly permanent: the bond can come loose and the wire can break, so it needs regular checks and careful cleaning.
What is a permanent retainer?
It is a short length of thin wire, usually braided stainless steel, shaped to fit the back surfaces of the front teeth. Your orthodontist or dentist bonds it in place with tooth-colored composite, the same kind of material used for white fillings. It usually spans the six front teeth, from canine to canine.
The American Association of Orthodontists (AAO) describes fixed retainers as thin wires bonded to the backside of the front teeth. Because teeth keep moving throughout life, the AAO says most people will need to wear some form of retainer for the rest of their lives. A bonded wire is one way to do that without having to remember to wear anything.
Many orthodontists pair a bonded wire with a removable retainer worn at night, for extra protection. Our guide to retainers after braces compares every type.
What does a permanent retainer look like?
From the front, you usually can’t see it. From behind, it looks like a thin silver wire running along the inside of your front teeth, held on by small tooth-colored bumps of bonding material on each tooth. Your tongue will notice it for the first few days, and then most people stop thinking about it.
Permanent retainer on top vs bottom
| Lower (bottom) permanent retainer | Upper (top) permanent retainer | |
|---|---|---|
| How common | The most common placement | Less common |
| Main consideration | Tartar tends to build up behind the lower front teeth, so cleaning matters | Your lower teeth bite against the back of the upper ones, so there has to be room for the wire |
| Who it may suit | Most people finishing braces or aligners | People whose bite leaves room, or whose upper teeth had gaps or rotations that tend to come back |
| Often paired with | A removable retainer for the upper teeth | A removable night retainer |
Whether a top retainer is an option depends on how your teeth meet. Your orthodontist checks your bite before recommending one.
How much is a permanent retainer?
In the US, a bonded retainer typically costs about $250 to $500 per arch when it is billed separately. Many orthodontists include the first set of retainers, bonded or removable, in the overall price of braces or aligners. Ask whether yours is included before you start treatment.
What drives the price:
- Who places it. Orthodontists and general dentists set their own fees.
- Where you live. Fees are usually higher in large cities.
- One arch or two. Each arch is usually priced separately.
- New retainer or repair. Re-bonding one loose spot often costs less than replacing the whole wire.
- Insurance. Some plans with orthodontic coverage include the first retainer, but many don’t pay for repairs or replacements. FSA and HSA funds can usually be used.
| Item | Typical US cost |
|---|---|
| New bonded retainer, one arch (if not included with braces) | About $250 to $500 |
| Re-bonding a loose spot | Often less than a full replacement; varies by office |
| Replacing a broken bonded wire | About $250 to $500 |
| Removable night retainer to pair with it | About $100 to $350 per arch |
For more on replacement costs, see how much a new retainer costs.
Permanent retainer pros and cons
Pros
- Works all day and night without you having to remember it.
- Can’t be lost, forgotten or chewed by the dog.
- Hidden behind the teeth.
- Placed in one short visit with no lab wait.
Cons
- Harder to clean. Plaque and tartar collect around the wire, and flossing needs a threader or a water flosser.
- The bond can come loose or the wire can break, sometimes without you noticing.
- A loose or bent wire can let a tooth shift.
- Still needs dental checks to catch problems early.
How long does a permanent retainer last?
There isn’t a fixed lifespan. Some last many years; others need repairs within months. A 2023 systematic review in the European Journal of Orthodontics pooled 34 studies with about 3,500 people. It found:
- About 35% of bonded retainers failed at least once (a loose bond or broken wire) during follow-up.
- Failures rose with time: about 24% in short-term follow-up, 40% in medium-term and 54% in long-term studies.
- There was no clear difference in failure rates between bonding methods, or between fibre-reinforced and braided steel wires.
The authors rated the evidence as low quality, so treat the exact numbers as a rough guide. The takeaway is that most bonded retainers need some attention over the years, which is why regular checkups matter.
How a permanent retainer compares with a removable retainer
A 2023 Cochrane review of retention after braces found:
- With full-time wear, there may be no difference in how well fixed and removable retainers hold teeth in place.
- Clear plastic retainers worn part-time may fail less often than fixed retainers, but when worn full-time they may fail more.
- Gum health may be better with clear removable retainers than with fixed ones.
- There was no difference in tooth decay.
The review rated this evidence as low to very low certainty, so neither option is clearly better for everyone. The choice often comes down to your bite, how well you can clean around a wire, and whether you’ll reliably wear a removable retainer.
How to clean a permanent retainer
Brush gently along the wire and gumline twice a day. To clean between the teeth, thread floss under the wire with a floss threader, or use a water flosser. Our Waterpik vs floss guide covers how they compare. The tools are the same ones people use with braces, covered in how to clean teeth with braces.
Biting into very hard or sticky foods with your front teeth can stress the bond. Cutting crunchy foods into smaller pieces helps.
Can a permanent retainer be removed?
Yes. A dentist or orthodontist removes it by taking off the wire and polishing away the bonding material. It is usually a short visit. Without a retainer, teeth can shift, so most people switch to a removable retainer worn at night. If you are thinking about treatment later in life, see braces for adults.
When to see a dentist
Contact your orthodontist or dentist promptly if the wire feels loose, sharp or bent, if a bonded spot has come off, if a tooth looks like it has moved, or if the wire is poking your tongue or gums. A loose section can let teeth shift, so it is worth getting checked within days rather than waiting for your next cleaning. See a dentist sooner if your gums around the wire are swollen or bleed often, which can mean plaque is building up.
Frequently asked questions
Do permanent retainers hurt?
Placing one shouldn’t hurt. The teeth are cleaned, the wire is positioned, and it is bonded on without needles or drilling. Your tongue will notice the wire at first, and most people get used to it within a few days to a couple of weeks.
Can you eat normally with a permanent retainer?
Mostly, yes. You don’t take it out to eat. Biting directly into very hard foods, like ice or hard candy, or sticky foods with your front teeth can loosen the bond, so cutting them into small pieces is easier on the retainer.
How long do you keep a permanent retainer?
Many people keep one for years, and some for decades, as long as it stays intact and their gums stay healthy. Teeth move throughout life, so the AAO says most people will need some form of retainer long term. If a bonded wire is removed, a removable night retainer usually takes over.
Is a permanent retainer better than a removable one?
Neither is clearly better for everyone. A 2023 Cochrane review found they may hold teeth similarly well when removable retainers are worn full-time, but clear removable retainers may be better for gum health. Bonded wires suit people who might forget a removable retainer but need careful cleaning.
What happens if my permanent retainer breaks?
Call your orthodontist or dentist. A single loose spot can often be re-bonded, while a broken wire may need replacing. Until it is fixed, teeth can start to move, so don’t wait for your next routine visit. If you have a removable retainer, wearing it in the meantime may help, if your orthodontist agrees.
