Getting your braces off feels like the finish line, but orthodontists see it as the start of the final stage: keeping your teeth where they now are. That is the job of a retainer. This guide explains why retainers matter, the main types, how to care for them, and what to do if one stops fitting. Your orthodontist’s instructions for your specific case always come first.
Why you need a retainer
The American Association of Orthodontists (AAO) describes a retainer as a device that keeps teeth in their straightened position after orthodontic treatment, with the main purpose of minimizing the natural tendency of teeth to move back toward their original positions over time. It says everyone undergoing orthodontic treatment should use a retainer as the final step, and that retainers also help support the bone around the teeth as it adapts to the new positions (AAO: Retainers).
The AAO also notes that our bodies and teeth naturally change over time. A retainer doesn’t freeze your mouth forever; it reduces how much of your correction is lost.
Types of retainers
The AAO says retainers are made from clear plastic, acrylic or wires that fit snugly over or behind the teeth. In practice there are three broad styles:
Clear plastic retainers
These look like thin, clear trays that snap over the teeth. They are hard to notice when worn. Because they cover the biting surfaces, they can wear or crack over time, especially in people who grind; see our guide to teeth grinding and tooth wear.
Wire-and-acrylic retainers
Often called Hawley-style retainers, these have an acrylic piece that sits against the roof of the mouth or behind the lower teeth and a wire that runs across the front teeth. They can sometimes be adjusted.
Bonded (fixed) retainers
A thin wire is attached to the back of the front teeth so it stays in place all the time. You can’t forget to wear it, but it takes extra effort to clean around, and your dentist will check it at routine visits.
Your orthodontist chooses based on how your teeth moved, which teeth are most likely to shift, and your habits. Some people have a bonded retainer on one arch and a removable one on the other.
How long and how often to wear it
Wear schedules vary, and the AAO emphasizes wearing retainers as prescribed by your orthodontist. Many people wear a removable retainer most of the day at first and later only at night, but your orthodontist will tell you what applies to you and when it changes. If you are unsure, ask rather than guess, because skipping wear is the most common reason teeth shift.
Caring for your retainer
The AAO gives step-by-step care advice:
- Clean it daily. Bacteria can grow on a dirty retainer. Gently brush it with a soft-bristled toothbrush and water, and consider soaking it at least weekly in a retainer-cleaning solution.
- Avoid hot water. Heat can damage it.
- Skip alcohol or bleach products. The AAO says these can damage the retainer and may be harmful if swallowed.
- Use the case. Always keep the retainer in its case when it is not in your mouth. The AAO’s rule: “If it’s not in your face, it should be in your case.”
- Handle it gently. Use both hands to put it in and take it out, to avoid bending it.
- Get it checked. Retainers can wear out or stop fitting snugly. See your orthodontist if the fit changes.
Keep brushing and cleaning between your teeth as usual. A retainer can trap plaque against the teeth if your mouth isn’t clean when you put it in. Our gum disease guide explains why plaque control matters.
If your retainer feels tight or doesn’t fit
A retainer that feels tight after a few nights off is often a sign that teeth have started to move. Rather than forcing a retainer that doesn’t fit, which can be uncomfortable and may damage the appliance, contact your orthodontist. The AAO reminds patients that their orthodontist is the best resource for instructions on their specific retainer. Call your orthodontist, describe what changed, and ask whether you need an adjustment, a new retainer, or a check-up.
If it breaks or gets lost
Call promptly. The longer you go without wearing a retainer, the more chance your teeth have to shift. Ask what replacement options and charges apply; the AAO notes the cost of the first set is often part of the overall treatment fee, but replacements may be separate. Our guide on reading a dental treatment plan can help you see what your original fee covered.
Retainers after clear aligners
Retainers are needed after aligner treatment too. If you are comparing aligner brands, our article on aligner options covers that, and our guide to clear aligners vs braces lists questions to ask before treatment, including what retainers are included.
Questions to ask your orthodontist
- Which type of retainer will I have, and why?
- How many hours a day should I wear it, and when will that change?
- How long should I expect to keep wearing a retainer?
- Is a replacement included in my fee if it breaks or is lost?
- How should I clean around a bonded retainer?
- Who checks my retainer after treatment ends, you or my general dentist?
Traveling and daily routines
Retainers are most often lost when they are wrapped in a napkin at a restaurant or left on a hotel nightstand. Build simple habits: keep the case with you, put the retainer straight into it whenever it comes out, and pack a spare case when you travel. Keep retainers away from pets, which can chew them, and away from heat sources such as a hot car dashboard, since the AAO warns that heat can damage them.
If you wear a bonded retainer, ask your dentist or hygienist to show you how to clean under the wire. Tell your dentist promptly if the wire feels loose or a spot comes unglued, because a partly detached wire may let teeth move. Mention your retainer at every checkup so it is part of the routine exam.
Frequently asked questions
Do I really need to wear a retainer?
The AAO says everyone undergoing orthodontic treatment should use one, because teeth naturally tend to drift back toward their old positions.
Can I clean my retainer with toothpaste?
The AAO recommends gently brushing with a soft brush and water and soaking it in a retainer-cleaning solution. Ask your orthodontist about specific products.
My retainer is tight. Should I push it in?
Don’t force it. Contact your orthodontist, who can check whether your teeth have moved and what to do.
Can I eat with my retainer in?
Removable retainers are usually taken out to eat. Follow your orthodontist’s instructions and store it in its case.
What if my teeth have already shifted?
See your orthodontist. Depending on how much movement has occurred, a new retainer or further treatment may be suggested.
Sources
- American Association of Orthodontists: Retainers
- MouthHealthy (ADA): Braces
- MouthHealthy (ADA): Orthodontics
By the Dentist Review Editorial Team.
This article is for general information only and is not medical advice. Talk to a licensed dentist about your own situation. See our disclaimer.
Featured image: “Clear plastic retainer in container” by Teemeah, via Wikimedia Commons, licensed CC BY-SA 3.0. Resized and compressed for the web.
Our guides are written and reviewed by the Dentist Review editorial team. We research each topic using public, authoritative sources such as the CDC, the National Institutes of Health (NIH/NIDCR), the American Dental Association (ADA) and CMS, and we update guides when guidance changes. Guides are for general information only and are not dental or medical advice; please read our disclaimer and learn more about us.