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How Long Do You Have to Wear a Retainer?

AnnaMarie Houlis Headshot
Written by
AnnaMarie Houlis
Medically Reviewed by 
Dr. Erica Anand
7 Sources Cited

What is a Retainer?

A retainer is an aligner you wear after finishing orthodontic treatment. These trays help keep your teeth straight. 

After your braces are removed, you will need to keep your teeth stabilized for a retention period.3 This prevents them from shifting back to how they were initially positioned. 

retainerNewMouth

A retainer is made of either plastic or metal. Most retainers are removable, but you can also choose a fixed retainer.

A fixed (or permanent) retainer is typically a tiny metal wire adhered to the back of your teeth. Your dentist may also give you a combination of both a removable and a fixed or permanent retainer.

Wearing your retainer as prescribed is important. When it comes to removable retainers, you typically need to wear them at night while sleeping.

Wearing your retainer may not feel comfortable at first, but you should get used to the feeling with time.

How Do Retainers Work? 

It is essential to wear your retainer as instructed by your orthodontist. When worn correctly and for the right amount of time each day, retainers prevent the possible shifting of teeth.7

Your orthodontist will take a mold of your straight teeth after you finish treatment. They will custom make a retainer to help hold your teeth in place with that mold.

This prevents your teeth from shifting back to a crooked position.

Removable retainers are generally worn every night for as long as your orthodontist tells you. Removable retainers should fit comfortably in your mouth.

There may be an adjustment period for your new removable retainer. Talk to your dentist or orthodontist if your retainer is hurting you or causing discomfort that does not subside.

A permanent retainer is one you have for the rest of your life. A permanent retainer is a small metal wire that is adhered to the back of your teeth.1

You will not be able to see it or feel it, but it helps keep your teeth together. Unlike removable retainers, you cannot take out your permanent retainer.

What are the Different Types of Retainers?

Wearing a retainer of any kind prevents your teeth from shifting. Retainers are essential during the first few months after you are done with braces.

Some retainers are meant to stay in place for life or, at least, last for years to prevent your teeth from shifting.

Here are three different types of retainers that orthodontists recommend:

1. Permanent Retainer

A permanent retainer is a metal wire that is glued to the back of your teeth.1 It is important to floss around them and brush your teeth, even with a permanent retainer.

2. Vacuum Form Retainer (VFR)

A VFR is a clear material that is custom-made to fit over your teeth.2 VFR retainers are not as bulky as other retainers, and you can wear them during the day since they are translucent.

3. Hawley Retainer

A Hawley retainer is a traditional plastic retainer that fits the roof or floor of your mouth.2 It is attached to a wire that slides over the front of your teeth. These retainers are bulkier, but they are much more durable.

Why are Retainers Important? What Happens if You Don’t Wear Them?

It is important to wear your retainer as prescribed to stop your teeth from retreating to how they were before braces. If you do not wear your retainer, your teeth can also shift into new positions. 

Your teeth can become crooked again over time, leading to an increased risk of oral health issues like cavities and gum disease. Misaligned teeth are more difficult to clean

How Long Do You Wear a Retainer After Braces?

Most retainers should last for years. However, some orthodontists recommend switching them out every six months to prevent oral health issues. 

Patients should talk to their orthodontist to determine how long they need to wear a retainer after braces.

Some people may be advised to wear a retainer every night for life to maintain their smile. Others may need to wear a retainer full-time for a few months to keep their teeth in place.

How Long Do You Wear a Retainer After Invisalign?

Invisalign is a brand of clear aligners that are used instead of traditional metal braces.5 You wear a series of ‘invisible’ removable aligners over time, and they gradually straighten your teeth.

On average, Invisalign treatment takes 12 to 18 months. This period could be longer or shorter.

You’ll wear a retainer for the same time as braces after Invisalign treatment.

How Many Hours a Day Should I Wear My Retainer?

How many hours a day you need to wear your retainer depends on the type of retainer.

You may be expected to wear clear retainers throughout the day, while others are only worn at night. Meanwhile, a fixed retainer is a permanent wire glued to your teeth, so you always wear it.

Generally, you should wear your retainer full-time for the first few months after removing your braces.

After two or three months, you will only need it at night.4

When Should You Replace Retainers?

A permanent retainer is exactly that: permanent. Permanent retainers should last you forever but they may need to be replaced if you break them. A permanent retainer can be removed and replaced if necessary.

A plastic retainer may need to be replaced more often. Some retainers should be replaced every few months to a year. It largely depends on how well you take care of it.

How to Clean a Removable Retainer (& What Not to Do)

Clean a removable retainer as frequently as you wear it. When you are done wearing your retainer, take it out and brush it with toothpaste like you would brush your teeth. You should also brush it before use.6

A fixed retainer can cause hygiene problems because it is more difficult to floss. Use an interproximal flosser or a water flosser to clean between the teeth. Check with your dentist if you need more frequent hygiene visits since plaque can build up.

It is also important to keep your retainer in a case if it is removable. Avoid dropping it in your bag or a purse, as it can become damaged and dirty. You should also avoid heat, as it can warp.6

Last updated on April 6, 2022
7 Sources Cited
Last updated on April 6, 2022
All NewMouth content is medically reviewed and fact-checked by a licensed dentist or orthodontist to ensure the information is factual, current, and relevant.

We have strict sourcing guidelines and only cite from current scientific research, such as scholarly articles, dentistry textbooks, government agencies, and medical journals. This also includes information provided by the American Dental Association (ADA), the American Association of Orthodontics (AAO), and the American Academy of Pediatrics (AAP).
  1. Retainer.” Dental Associates.
  2. Types of Retainers.” Dental Associates.
  3. Dental Braces.” Mayo Clinic, Mayo Foundation for Medical Education and Research, 21 May 2019.
  4. How to Live Your Best Life With Dental Retainers.” ADA Marketplace - American Dental Association.
  5. Invisalign FAQs.” Invisalign
  6. Taking Care of Retainers.” American Association of Orthodontists, 11 Nov. 2020.
  7. Will I Need to Wear Retainers?” American Association of Orthodontists, 13 Jan. 2020.
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