How to Clean Retainers

Method 2: Toothbrush and water

It is recommended that you brush your retainer, aligner or mouth guard at least once a day with a soft-bristled toothbrush. Use a different brush than you use on your teeth. This will help remove food debris and plaque, so it is worth investing in a soft toothbrush just for cleaning your appliance. However, brushing with only water will not kill odor-causing bacteria which could lead to your retainer or mouth guard tasting or smelling bad over time. Always consult with your dental professional and use the cleaning regimen they recommend.

Method 3: Toothbrush and regular toothpaste

Regular toothpaste can be abrasive as it is designed to be used to clean the tough enamel which covers natural teeth. However, your retainer or mouth guard is much softer than enamel so brushing it with regular toothpaste could scratch the surface. These scratches could attract even more plaque bacteria which in turn can cause decay in natural teeth and lead to oral health problems including bad breath or other dental issues. Always consult with your dental professional and use the cleaning regimen they recommend.

Method 4: Soak and rinse in mouthwash

You may be tempted to soak or rinse your retainer or mouth guard in your mouthwash to freshen up the smell. However, this is not typically recommended by dental professionals, as it could cause harm to the appliance. Always consult with your dental professional and use the cleaning regimen they recommend.

Method 5: Vinegar and water soak

Vinegar diluted with water is sometimes recommended as a ‘natural, home-based’ remedy. Vinegar does have some germ-killing properties and can work as a gentle disinfectant to remove odors and bacteria. However, be aware vinegar has a very strong smell so your removable dental appliance may not taste or smell very good afterwards. Always consult with your dental professional and use the cleaning regimen they recommend.

Method 6: Solutions containing baking soda

Baking soda (sometimes called sodium bicarbonate) is another ‘natural, home-based’ method which is sometimes claimed to clean retainers that have turned yellow as they have developed stains over time. Baking soda has mixed reviews. Some medical evidence has demonstrated it has antibacterial properties. Due to its abrasive composition, baking soda is a good cleaner however, it may also have the potential to scratch and damage your retainer, aligner or mouth guard. Always consult with your dental professional and use the cleaning regimen they recommend.

Method 7: Castile soap

Castile soap is a natural way to clean removable dental appliances. It is sometimes suggested for cleaning appliances as it is less toxic and harsh than many other soap cleaning products. Always rinse off your retainer, aligner or mouth guard thoroughly with cool water before putting it back in your mouth as any soap product may leave an aftertaste. Always consult with your dental professional and use the cleaning regimen they recommend. 

Method 8: Dissolvable cleanser tablets

Alongside gentle brushing, one of the best ways to stop cumulative build-up of odor-causing bacteria on your removable dental appliance is to use specialist cleansing tablets like Polident Pro Guard & Retainer*. These dissolvable tablets are specially designed with Crystal Clear technology to lift stains and are proven to kill 99.99% of odor-causing bacteria.**  Always consult with your dental professional and use the cleaning regimen they recommend.

^{*In laboratory tests
** Always follow the instructions on the package.}