If you wear a night mouth guard for teeth grinding or clenching, keeping it clean is just as important as wearing it. Your mouthguard sits in your mouth for hours each night, making it a breeding ground for bacteria if not properly maintained. A clean mouthguard protects your oral health and extends the life of the appliance.

Whether you have a custom mouthguard for teeth grinding, sports, or TMJ management, establishing a consistent cleaning routine will keep it fresh and effective. Here’s everything you need to know about how to clean your mouth guard properly.

Why Cleaning Your Mouth Guard Matters

Every time you wear your mouthguard, it collects bacteria, saliva, and food particles. Without regular cleaning, bacteria can multiply and lead to bad breath, mouth infections, or even cavities and gum disease. A dirty mouthguard can also develop an unpleasant odor and become discolored over time.

Regular cleaning removes harmful bacteria and keeps your mouth guard hygienic. It also helps you avoid that uncomfortable morning taste when you put in a freshly cleaned guard versus one that’s been sitting unwashed.

Daily Cleaning: After Every Use

You should clean your mouth guard after every use. This daily routine takes just a few minutes but makes a significant difference in maintaining oral hygiene.

Rinse Immediately

As soon as you remove your mouthguard, rinse it thoroughly with cool or lukewarm water. Never use hot water, as high temperatures can warp the material and change the fit of your guard. This quick rinse removes loose debris and saliva before bacteria has a chance to multiply.

Clean with Toothpaste or Soap

For daily cleaning, you have two simple options:

Toothpaste method:

1. Apply a small amount of non-abrasive toothpaste to a soft-bristled toothbrush
2. Gently brush all surfaces of the mouthguard
3. Rinse thoroughly with cool water
4. Let it air dry completely
   
   

Soap and water method:

1. Use a mild, alcohol-free soap like antibacterial hand soap or dish soap
2. Apply soap to the mouthguard
3. Gently scrub with a soft toothbrush until soapy
4. Rinse until all soap is removed
5. Allow to air dry
   
   

Keep a separate toothbrush designated just for cleaning your mouthguard. This prevents cross-contamination with the brush you use for your teeth.

Dry Completely Before Storage

After cleaning, let your mouth guard air dry on a clean surface for 15 to 30 minutes. Moisture encourages bacterial growth, so the drying step is essential. Once completely dry, store it in a ventilated case that allows air circulation. Never store a damp mouthguard in a sealed container.

Deep Cleaning: Once a Week

In addition to daily cleaning, deep clean your mouth guard at least once a week to eliminate bacteria that daily brushing might miss.

Mouthwash Soak

An alcohol-free mouthwash works well for weekly deep cleaning:

1. Add a capful of alcohol-free mouthwash to a clean glass
2. Dilute with enough water to cover your mouthguard
3. Soak for 30 minutes
4. Remove and rinse thoroughly with cool water
5. Let it air dry before storing
   
   

Avoid mouthwashes with alcohol, which can damage or dry out the material over time.

Baking Soda Paste

Baking soda is a natural cleaner that removes odors and debris:

1. Mix equal parts baking soda and water to create a paste
2. Apply the paste to your mouthguard with a toothbrush
3. Gently scrub all surfaces
4. Rinse thoroughly with cool water
5. Air dry completely

Vinegar and Hydrogen Peroxide Deep Clean

For a more thorough deep clean once a month, use vinegar and hydrogen peroxide:

1. Place your mouthguard in a clean glass
2. Add enough white vinegar to cover it completely
3. Soak for 30 minutes
4. Rinse the mouthguard and glass thoroughly
5. Return the guard to the glass and cover with hydrogen peroxide
6. Soak for another 30 minutes
7. Rinse well with cool water
8. Air dry before storing

Denture Cleaner Tablets

Over-the-counter denture cleaner tablets are designed for oral appliances and work well for mouthguards:

1. Fill a clean glass with warm (not hot) water
2. Add one denture cleaning tablet and let it dissolve
3. Place your mouthguard in the solution
4. Soak for 5 to 10 minutes (follow package directions)
5. Remove and rinse thoroughly
6. Air dry completely
   
   

Don’t over-soak your mouthguard in denture cleaner, as prolonged exposure can degrade the material.

Proper Storage and Care

How you store your mouth guard between uses affects its cleanliness and longevity.

Storage best practices:

• Use a hard, ventilated case to protect your mouthguard from damage and allow air flow
• Clean the storage case every few days with soap and water
• Store the case in a cool, dry place away from direct sunlight and heat
• Keep it away from pets who might mistake it for a chew toy
• Replace your storage case every 6 to 12 months

What to avoid:

• Never wrap your mouthguard in a napkin or tissue (you might accidentally throw it away)
• Don’t leave it on countertops where it can pick up bacteria
• Avoid storing it in the bathroom where humidity can promote bacterial growth
• Never share your mouthguard with anyone else

Signs It’s Time to Replace Your Mouthguard

Even with proper care, mouthguards don’t last forever. Most custom-fitted mouthguards last several years, while over-the-counter options may need replacement every few months to a year depending on use.

Replace your mouthguard if you notice:

• Cracks, tears, or holes in the material
• A loose or improper fit
• Reduced thickness or worn spots
• Warping or deformed shape
• Persistent bad odor even after cleaning
• Discoloration that doesn’t improve with cleaning
• Irritation to your gums or teeth when wearing it

Bring your mouthguard to your regular dental or orthodontic appointments. Your orthodontist can inspect it for signs of wear and determine if you need a replacement.

Maintaining Oral Hygiene with Your Mouthguard

Your mouth guard is only as clean as the mouth you put it in. Brush and floss your teeth before wearing your mouthguard each night. This removes food particles and bacteria that could transfer to the guard.

If you wake up with your mouthguard feeling slimy or notice your breath is worse than usual in the morning, it’s a sign you need to improve your cleaning routine. A properly maintained mouthguard should feel fresh when you put it in and come out relatively clean.

Custom Mouthguards for Better Fit and Protection

While cleaning techniques work for all types of mouthguards, custom-fitted guards from an orthodontist offer superior comfort, protection, and durability compared to over-the-counter options. At Washington Orthodontics, we create custom mouthguards using advanced 3D imaging technology to ensure a snug, comfortable fit.

Custom guards are easier to clean because they fit precisely to your teeth without excess material where bacteria can hide. They’re also more durable, lasting longer with proper care than store-bought alternatives.

Final Thoughts

Cleaning your mouth guard is a simple habit that protects both your oral health and your investment in the appliance. Rinse and brush your guard after every use, deep clean it weekly, and replace it when signs of wear appear. With consistent care, your mouthguard will continue to protect your teeth effectively for years.

If you’re experiencing teeth grinding, jaw clenching, or TMJ issues and think a custom mouthguard could help, contact Washington Orthodontics to schedule a consultation at our Columbia or Sumter location. We’ll evaluate your needs and create a personalized treatment plan to protect your smile.