How to Clean a Mouthguard at Home: Dentist-Approved Methods
A mouthguard is a critical investment in your oral health, whether you wear one for sports protection, teeth grinding prevention, or orthodontic treatment. However, many people overlook the importance of proper mouthguard maintenance, which can lead to bacterial buildup, unpleasant odors, and material degradation. Learning how to clean a mouthguard properly ensures it remains hygienic, effective, and durable for years to come.
Just as you’d maintain other essential household items—like following proper steps to clean a gas grill or keep your litter box fresh—your mouthguard requires consistent daily care. In this comprehensive guide, we’ll share dentist-approved techniques, safe cleaning solutions, and storage best practices to maximize your mouthguard’s lifespan while protecting your teeth and gums.
Daily Cleaning Routine for Mouthguards
The foundation of mouthguard hygiene is establishing a simple daily cleaning routine immediately after use. This prevents bacteria, food particles, and saliva from hardening on the surface, which becomes increasingly difficult to remove over time. Rinse your mouthguard with cool running water within minutes of taking it out of your mouth—this is the single most important step in preventing odor and decay.
After rinsing, gently brush the mouthguard using a soft-bristled toothbrush with mild soap or non-abrasive toothpaste. Use gentle circular motions on both the inner and outer surfaces, paying special attention to crevices and the edges where bacteria tend to accumulate. The American Dental Association recommends using a soft toothbrush to avoid damaging the material. Avoid aggressive scrubbing, which can scratch acrylic or silicone materials and create microscopic grooves where bacteria hide.
Pat the mouthguard dry with a clean, lint-free cloth before storing it. Never leave it wet in a case, as moisture creates an ideal environment for mold and bacterial growth. If you wear a personalized sports mouthguard, this daily routine should take less than two minutes but will dramatically extend its usable life.
Deep Cleaning Methods and Solutions
While daily rinsing and brushing maintain basic hygiene, deep cleaning should occur 2-3 times weekly to eliminate stubborn buildup and odor-causing bacteria. Several safe, dentist-approved methods exist for thorough mouthguard cleaning.
Soaking in Denture Cleaner Solution
Denture cleaning tablets are specifically formulated for oral appliances and work excellently on mouthguards. Drop your mouthguard into a glass of water with one denture tablet and let it soak for 15-30 minutes. The effervescent action breaks down plaque and disinfects the surface without harsh chemicals. This method is particularly effective for thorough cleaning tasks that require minimal effort. Popular denture cleaners like Polident or Efferdent are widely available and cost-effective. After soaking, rinse thoroughly under running water and brush gently to remove loosened debris.
Vinegar and Water Solution
A natural alternative involves mixing equal parts white vinegar and water in a small container. Submerge your mouthguard for 20-30 minutes, then brush and rinse thoroughly. Vinegar’s acetic acid content kills bacteria and removes mineral deposits without damaging most mouthguard materials. This eco-friendly approach costs pennies and uses ingredients you likely have at home. However, some specialized mouthguard materials may be sensitive to vinegar, so consult your dentist if you’re uncertain about your specific appliance type.
Baking Soda Paste
Mix baking soda with a small amount of water to create a gentle abrasive paste. Apply this to your mouthguard and use a soft brush to scrub gently, then rinse completely. Baking soda neutralizes odors naturally and provides mild whitening action. This method works particularly well for removing surface stains and discoloration that develops over time. Unlike commercial whitening products, baking soda won’t weaken or discolor your mouthguard material.
Hydrogen Peroxide Soak
A 3% hydrogen peroxide solution (standard drugstore variety) can disinfect your mouthguard when soaked for 15-20 minutes. This is one of the most effective antimicrobial methods and is safe for most mouthguard types. The American Dental Association recognizes hydrogen peroxide as a safe oral disinfectant. Always dilute commercial hydrogen peroxide and never use industrial-strength versions. After soaking, rinse multiple times to ensure no chemical residue remains.
Never soak your mouthguard in hot water or use boiling water for cleaning, as extreme heat can warp thermoplastic materials and compromise the fit. Lukewarm water is always the safest choice for all cleaning methods.
What to Avoid When Cleaning Mouthguards
Understanding what not to do is equally important as knowing proper cleaning techniques. Many people inadvertently damage their mouthguards through well-intentioned but harmful practices.
Avoid These Common Mistakes:
- Dishwasher or washing machine cleaning: The high temperatures and harsh detergents will warp most mouthguard materials and reduce their protective effectiveness
- Abrasive cleaners or scouring pads: Harsh scrubbing tools scratch the surface, creating spaces for bacteria colonization and weakening the material
- Ultrasonic cleaners: While safe for jewelry, these devices can damage the structural integrity of mouthguard materials
- Bleach or chlorine-based cleaners: These harsh chemicals degrade plastic and rubber materials and are unnecessary for oral appliances
- Alcohol-based mouthwash: Prolonged soaking in alcohol can dry out and crack some mouthguard materials; brief rinsing is acceptable but extended contact should be avoided
- Toothpaste with whitening agents: Abrasive whitening formulas can scratch and damage your mouthguard; use only soft, non-abrasive varieties
Additionally, never leave your mouthguard exposed to direct sunlight for extended periods, as UV exposure degrades most materials. Store it in a cool, dry location away from heat sources and direct light. Think of protecting your mouthguard similarly to how you’d protect valuable items in securing your home—prevention through proper storage is key.
Storage and Maintenance Tips
Proper storage extends your mouthguard’s lifespan significantly and maintains its hygiene between uses. Always store your cleaned and dried mouthguard in its protective case rather than loose in a sports bag or bathroom drawer. A dedicated case protects against contamination, damage, and loss.
Storage Best Practices:
- Allow your mouthguard to air dry completely before placing it in the case—trapped moisture promotes mold growth
- Store in a cool location (60-75°F is ideal); avoid leaving it in hot cars or near heating vents
- Keep the storage case clean by rinsing it weekly and allowing it to dry thoroughly
- Never store your mouthguard in a closed container while still damp
- Replace the storage case every 6-12 months or if it shows signs of mold or damage
- Store away from pets and children who might chew on or lose the appliance
Inspect your mouthguard monthly for signs of wear, including cracks, tears, discoloration, or material separation. Even small damage compromises its protective function. According to dental research on mouthguard effectiveness, damaged appliances provide significantly reduced impact protection. If you notice deterioration, consult your dentist about replacement options.
Troubleshooting Common Mouthguard Issues
Despite proper cleaning, mouthguards occasionally develop problems that require specific solutions. Understanding how to address these issues prevents premature replacement.
Persistent Odor
If your mouthguard smells despite regular cleaning, increase deep cleaning frequency to daily and try the hydrogen peroxide soak method. Odor often indicates bacterial buildup in hard-to-reach areas. A denture tablet soak overnight may be necessary. If odor persists after a week of intensive cleaning, consult your dentist—the material may be degrading internally or harboring stubborn bacteria colonies.
Discoloration and Staining
Yellow or brown stains result from food particles, beverage residue, or bacterial pigmentation. Baking soda paste is highly effective for mild staining. For stubborn discoloration, try soaking in equal parts white vinegar and water for 30 minutes, then brush gently. Avoid commercial whitening products designed for teeth, as these may damage mouthguard materials. Prevention is easier than removal—rinse immediately after eating or drinking anything besides water.
Loose or Shifting Fit
If your mouthguard feels loose after cleaning, ensure it’s completely dry before inserting—moisture can temporarily affect the fit. If looseness persists after drying, the material may have warped from heat exposure or age. This is a safety concern, as a loose mouthguard provides inadequate protection. Schedule an appointment with your dentist to assess whether adjustment or replacement is necessary.
Cracking or Splitting
Small hairline cracks may result from impact, heat damage, or material fatigue. While minor cracks don’t necessarily require immediate replacement, they do create surfaces where bacteria thrive. Monitor cracks closely and have your dentist evaluate whether the appliance is still providing adequate protection. Prevent future cracking by avoiding heat exposure and storing properly in its protective case.
FAQ
Can I use regular toothpaste to clean my mouthguard?
Yes, but only non-abrasive varieties. Standard soft-paste toothpaste works well for daily cleaning, but avoid whitening or tartar-control formulas, which contain abrasive particles that scratch mouthguard materials. Gentle, plain toothpaste is always the safest choice.
How often should I replace my mouthguard?
With proper cleaning and storage, most mouthguards last 3-5 years. However, athletes who use them frequently may need replacement every 1-2 years due to wear. Inspect regularly and replace sooner if you notice significant damage, material breakdown, or persistent odor after thorough cleaning.
Is it safe to soak my mouthguard overnight?
Yes, overnight soaking in denture cleaner or diluted hydrogen peroxide is safe and beneficial for deep cleaning. However, never soak in undiluted bleach, strong alcohol, or acidic solutions. Always ensure your mouthguard is completely dry before storing it after an overnight soak.
What should I do if my mouthguard develops mold?
Soak it immediately in a 1:1 vinegar-water solution or hydrogen peroxide for 30 minutes, then brush gently and rinse thoroughly. Dry completely before storage. Prevent future mold by ensuring your mouthguard is completely dry before storing and allowing your storage case to air dry as well. If mold returns quickly, replace the storage case.
Can I clean my mouthguard with my retainer?
While both are oral appliances, they may require different care approaches. Check with your dentist about specific cleaning recommendations for your retainer type. Generally, similar gentle methods work for both, but some specialized retainer materials may have unique requirements. Using the same denture tablet soak is usually safe for both appliances.
Is vinegar safe for all mouthguard materials?
Vinegar is safe for most thermoplastic and acrylic mouthguards, but if your appliance contains metal components or specialized coatings, consult your dentist first. Some custom-made guards with specific material compositions may be sensitive to acetic acid. When in doubt, stick with denture tablets, which are formulated specifically for oral appliances.
Why does my mouthguard smell like plastic?
New mouthguards often have a plastic smell that fades with regular cleaning and use. If an older mouthguard develops a persistent plastic odor, it may indicate material breakdown or chemical leaching from degradation. Increase cleaning frequency and ensure proper storage away from heat sources. If the smell intensifies or is accompanied by discoloration, consult your dentist about replacement.
