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Quick Summary / Key Takeaways
- Rinse with cool water after every session to clear saliva and residue before it sits on the guard.
- Use a soft toothbrush and mild soap for routine cleaning, and avoid toothpaste since it can be abrasive.
- Deep clean at least once a week using a mouthguard-safe cleaning tablet or soak to keep odor and buildup from settling in.
- Air-dry completely and store in a ventilated case to prevent moisture from being trapped between sessions.
- Replace your guard when retention drops or damage appears, such as cracks, warping, or layer separation.
Your mouthguard is the barrier between your teeth and impact, and it takes punishment every time you step onto the mats or into the ring. The problem is not the hits. It is what happens after. A mouthguard that stays wet, gets tossed into a bag, or only gets a quick rinse becomes a magnet for bacteria and odor, and it can turn into gear you do not even want to wear.
Knowing how to clean a mouthguard is not about making it look pretty. It is about keeping it safe to use and keeping it consistent. Heat, abrasive cleaners, and sloppy storage can warp the shape, roughen the surface, and mess with fit over time. A guard that does not seat the same way every session is a problem.
This guide breaks down the key steps to follow, including what to do after every session, how to deep clean weekly, and how to store your gear so it stays dry and ready for contact. If you are serious about protecting your bite, these habits are part of the system, not an optional extra.
Want fight-grade protection built from a real dental impression, not a boil-and-bite guess? Take a look at custom options from Impact Dental Designs.
Cleaning Methods For Mouthguards And When To Use Them
| Method | When to use it | What it does well | Watch out for |
|---|---|---|---|
| Cool water rinse | After every use | Quickly clears saliva and loose residue right after training | A rinse alone does not remove built-up residue or odor over time |
| Alcohol-free mouthwash rinse | After use when needed | Useful quick refresh between sessions | Use alcohol-free only and do not treat it as your main cleaning method |
| Soft toothbrush + mild soap | At least once a week | Lifts buildup without damaging the material | Avoid toothpaste because it can be abrasive |
| Cleaning tablets or a mouthguard-safe soak | Once a week | Supports a deeper clean to help control odor and buildup | Follow product directions, then rinse thoroughly and air-dry completely |
What To Avoid When Cleaning And Storing A Mouthguard
| Avoid This | Why it is a problem | What can happen | Do this instead |
|---|---|---|---|
| Boiling water or hot water | Heat can warp the material | Shape changes and the fit can feel off | Use cool water for rinsing and cleaning |
| Toothpaste | Abrasive and can roughen the surface | Buildup sticks more easily and cleaning gets harder | Use mild soap with a soft brush |
| Bleach or harsh cleaners | Too aggressive for mouthguard materials | Material breakdown and lingering chemical taste | Use mild soap or a mouthguard-safe cleaner |
| Alcohol-based mouthwash | Can be harsh on materials over time | Drying and accelerated wear | Use alcohol-free mouthwash only |
| Storing it wet in a sealed case or gym bag | Traps moisture with no airflow | Odor and bacterial growth risk increases fast | Air-dry completely, then store in a ventilated case |
| Leaving it in heat (hot car or direct sun) | Heat can deform the shape | Warping and poor fit | Store in a cool, dry place |
Before Training Checklist For A Clean Mouthguard
- Inspect the mouthguard for cracks, warping, layer separation, or reduced retention. If it is damaged or no longer fits the same, do not use it.
- Wash your hands before handling the mouthguard so you are not adding grime to the surface.
- Have what you need ready for basic care: cool water, a soft toothbrush, and mild soap.
- If the mouthguard was stored, make sure it is dry and stored in a ventilated case, not sitting wet from the last session.
After Training Checklist To Keep Your Mouthguard Usable
- Rinse the mouthguard with cool water right after use to clear saliva and residue.
- Let it air-dry completely or dry it with a clean, lint-free towel, then finish air-drying before storage.
- Store the mouthguard in a clean, ventilated case. Do not seal it wet in a bag.
- Wash the storage case with soap and water as needed, then let it dry fully, and keep it away from heat and direct sunlight.
Table of Contents
Section 1: CLEAN YOUR MOUTHGUARD AFTER EVERY SESSION
Section 2: DEEP CLEAN YOUR MOUTHGUARD WEEKLY
Section 3: MOUTHGUARD HYGIENE PROBLEMS AND WHAT TO DO
Section 4: STORE YOUR MOUTHGUARD RIGHT, REPLACE IT ON TIME
Frequently Asked Questions
Section 1: CLEAN YOUR MOUTHGUARD AFTER EVERY SESSION
FAQ 1: Why is cleaning a mouthguard so important for athletes?
Cleaning a mouthguard is important for athletes because it helps prevent odor-causing buildup and bacteria from forming after training, keeping the guard comfortable and ready for repeat contact. At Impact Dental Designs, we see this as basic gear discipline: rinse your mouthguard with cool water or a non-alcoholic mouthwash after every use, then air-dry it completely before you put it away.
Cleaning also protects the guard’s fit and material integrity. Hot water can warp the shape, and leaving a guard wet in storage can accelerate buildup and shorten its usable life. Store it in a ventilated case, keep it away from heat, and stick to the routine so your mouthguard stays reliable when training gets heavy.
Takeaway: Clean your mouthguard after every session to control buildup and odor, and to preserve fit and durability over time.
FAQ 2: Can I use regular toothpaste for cleaning mouthguard surfaces?
No—avoid regular toothpaste on a mouthguard because it can be abrasive and leave fine surface wear that makes buildup harder to remove over time. If you want your guard to stay clean and stay consistent, keep it simple: rinse with cool water after every use, let it air-dry completely, and store it in a ventilated case so moisture doesn’t sit on the material.
For actual cleaning, use a soft toothbrush with mild soap at least once a week—that’s the standard we follow for guards designed under a licensed dentist. Skip hot water, skip toothpaste, and don’t try to “scrub it clean” with harsh products. Clean gear lasts longer.
Takeaway: Skip toothpaste—use mild soap and a soft brush to protect the mouthguard’s surface, hygiene, and long-term durability.
FAQ 3: What is the best daily routine for cleaning a mouthguard?
The best daily routine is simple: rinse your mouthguard with cool water immediately after use, then air-dry it completely before storing it in a ventilated case. That baseline routine stops moisture from sitting on the guard, which is where odor and buildup start.
For a deeper clean, use a soft toothbrush and mild soap at least once a week, then rinse thoroughly with cool water and let it fully dry before storage. This is the same maintenance standard we recommend for mouthguards designed under a licensed dentist—because precision fit means nothing if you let the gear get funky or warped.
Takeaway: Rinse after every session, dry completely, and store ventilated—then use mild soap weekly to keep the guard clean and consistent.
FAQ 4: What kind of soap is safest for cleaning mouthguard materials?
Mild dish soap is the safest option for cleaning mouthguard materials because it removes saliva residue without using abrasive grit or harsh chemicals. Keep it simple: a small amount of mild soap on a soft toothbrush, gentle brushing, then rinse thoroughly with cool water so no residue is left behind.
Skip anything heavily scented, dyed, or aggressive—strong fragrances can leave an aftertaste, and harsh cleaners can break down the material over time. If you’re cleaning a guard built for high-impact use, treat it like precision gear. This is the same standard recommended by Dr. Andrew Sarowitz, a licensed sports dentist: mild soap, cool water, full rinse, then air-dry completely before storing in a ventilated case.
Takeaway: Use mild dish soap, rinse completely with cool water, and dry fully—clean without chewing up the material.
Section 2: DEEP CLEAN YOUR MOUTHGUARD WEEKLY
FAQ 5: How often should I perform a deep clean on my guard?
Deep clean your mouthguard at least once a week to keep buildup from settling in and turning into permanent odor or discoloration. Daily rinsing helps, but it’s not enough on its own if you’re training hard and sweating through sessions—weekly cleaning is how you keep the guard consistently usable.
Keep the process simple and controlled: use a mouthguard-safe cleaner or soak, then rinse thoroughly with cool water, air-dry completely, and store it in a ventilated case. Don’t use hot water and don’t “sanitize” it with heat—warping the shape is how a guard stops fitting the way it should.
Takeaway: Deep clean weekly, rinse with cool water, dry completely, and store ventilated to control odor and protect fit.
FAQ 6: Is it safe to use boiling water for cleaning a mouthguard?
No. Boiling water is not safe for cleaning a mouthguard because high heat can warp the shape and change the fit, which matters for comfort, retention, and protection during contact. Once a guard is distorted, it may stop seating the same way and become easier to dislodge when you are breathing through your mouth or taking impact.
Use cool water for rinsing. For cleaning, use a soft brush with mild soap or a mouthguard-safe soak, then rinse thoroughly with cool water, air-dry completely, and store it in a ventilated case. The goal is to clean the guard without changing its shape.
Takeaway: Do not use boiling water. Clean with cool water and mild methods to protect fit and retention.
FAQ 7: How do I remove stubborn stains or yellowing from my guard?
To remove stubborn stains or yellowing, start with a deeper clean that does not scratch or warp the material. Gently brush the guard with a soft toothbrush and mild soap, then rinse thoroughly with cool water and air-dry completely. If the discoloration is coming from trapped moisture and residue, tightening this routine and making sure the guard is fully dry before storage often makes the biggest difference.
If stains keep coming back, the problem is usually how the guard is being treated between sessions. Do not use toothpaste (it is abrasive), do not use hot water (it can warp the shape), and do not store it wet in a sealed case or gym bag. Store it in a ventilated case, keep it away from heat, and inspect it for wear. If the surface is rough, warped, or the fit has changed, discoloration can be a sign the guard is nearing replacement territory.
Takeaway: Use mild soap and cool water with full drying and ventilated storage to reduce staining without damaging the mouthguard.
FAQ 8: Can I use mouthwash as a quick soak for my guard?
Yes, you can use mouthwash as a quick soak, but only if it is alcohol free. Alcohol can dry out certain mouthguard materials over time, which can make a guard wear down faster and feel rougher. Keep it short and controlled. A brief soak is a refresher, not your main cleaning method.
Here is the routine that stays consistent with how we tell athletes to care for high impact mouthguards. Use an alcohol free mouthwash soak for a quick reset, then rinse thoroughly with cool water, air dry completely, and store it in a ventilated case. For real cleaning, use a soft brush with mild soap at least once a week so you are not relying on mouthwash to do the heavy lifting.
Takeaway: Use alcohol free mouthwash only as a short refresher, then rinse with cool water and dry fully so the guard keeps its shape and material integrity.
Section 3: MOUTHGUARD HYGIENE PROBLEMS AND WHAT TO DO
FAQ 9: Can a dirty mouthguard actually make me sick?
Yes, a dirty mouthguard can make you sick because it can carry bacteria and fungi directly into your mouth every time you use it. In the gym, guards can pick up pathogens like Staph (Staphylococcus) and Strep (Streptococcus), especially when they stay wet, get tossed into a closed case, or hit the mat.
The risk goes up in combat sports because you are not just wearing it, you are taking contact. Small cuts in the mouth, irritated gums, and split lips give bacteria an easy entry point, which can lead to mouth irritation, sore throat type symptoms, or infections around the lips and face. If your guard has a persistent odor, visible buildup, or keeps coming back “dirty” fast, treat it like compromised gear and replace it.
Takeaway: A dirty mouthguard can expose you to pathogens like Staph and Strep and increase the risk of irritation or infection, especially when you have small cuts from training.
FAQ 10: Why does my mouthguard smell even after I rinse it?
Your mouthguard can still smell after rinsing because a quick rinse does not fully remove the residue that builds up after training, especially when the guard stays wet. Odor usually shows up when moisture and buildup sit on the mouthguard between sessions, which is why simply rinsing and tossing it into storage is not enough.
If the smell keeps coming back, it is often because the guard is not being fully dried before storage or it is being stored in a way that traps moisture. It can also happen when the surface gets worn down from the wrong cleaning habits. Toothpaste is a common mistake since it is abrasive and can damage the material. If odor persists even after proper cleaning and full drying, it can be a sign the mouthguard is wearing out and may need replacement.
Takeaway: If your mouthguard smells after rinsing, moisture and buildup are still sitting on it, and persistent odor can signal worn material that may need replacement.
FAQ 11: What should I do if I drop my mouthguard on the gym floor?
Do not put it back in your mouth until it has been properly cleaned. Gym floors and training mats can carry pathogens, including Staph bacteria (including MRSA) and fungi like ringworm, and a quick water rinse does not reliably remove that risk.
If you are mid-session, rinse it with cool water right away and clean it with mild soap as soon as you can. When you are done training, follow up with a mouthguard-safe deep clean, then let it air-dry completely before storage. If you cannot clean it on the spot, use a clean spare or pause contact training until you can.
Takeaway: If your mouthguard hits the gym floor, clean it thoroughly before using it again because surfaces can carry MRSA, ringworm, and other pathogens.
Section 4: STORE YOUR MOUTHGUARD RIGHT, REPLACE IT ON TIME
FAQ 12: What are the signs that my mouthguard needs to be replaced?
Your mouthguard needs to be replaced if it no longer fits securely or shows visible wear that changes how it seats and protects. The biggest red flag is reduced retention, meaning it starts falling out more easily when your mouth is open. Other replace-now signs include layer separation from repeated biting or clenching, plus any cracks, warping, or deformation that changes the shape.
Timing depends on use and change. With normal use, a guard can often last up to around two years, but kids and teens typically need replacement closer to one year or a season because their bite is still changing. If you train in a mouthguard every session, it wears faster, which is why we usually recommend reserving a custom guard for sparring and competition when possible. Major dental changes can also force a replacement. Braces or orthodontic work, extractions, crowns and bridge work, or implants can affect fit.
If you need a new build, Impact Dental Designs can fabricate a fresh custom guard from an updated impression, and for athletes with braces, a digital intraoral scan can be used instead of an at-home molding kit.
Takeaway: Replace your mouthguard when retention drops, layers separate, or you see cracks or warping, and reassess after growth, heavy daily training, or major dental work.
FAQ 13: How should I store my mouthguard between training sessions?
Store your mouthguard fully dry in a sturdy, ventilated case so moisture does not get trapped against the material. Ventilation matters because it helps the guard dry out between uses, which reduces mold and mildew risk and keeps odor from stacking up session after session.
Keep the case somewhere cool and dry, and avoid heat exposure. A hot car or direct sunlight can warp the mouthguard and change the fit. This is the same storage standard we recommend for guards designed under a licensed dentist because fit and retention depend on keeping the material stable.
Takeaway: Dry first, store ventilated, and keep it away from heat to protect fit and prevent mold and warping.
FAQ 14: Is it okay to leave my guard in my gym bag overnight?
No. Leaving your mouthguard in your gym bag overnight is not recommended because a gym bag traps heat and moisture from sweaty wraps, gloves, and clothes. That creates a humid, low-airflow environment where odor-causing buildup and bacteria can ramp up fast. If the guard is even slightly wet when it goes into the bag, it is basically sitting in a warm incubator until morning.
If you are stuck traveling or heading straight from the gym, the minimum standard is this: make sure the guard is as dry as possible, put it in a ventilated case, and keep that case in an outer pocket where it gets more airflow. Then take it out of the bag as soon as you can and let it fully dry. The point is to stop moisture from being trapped against the material for hours.
Takeaway: Do not store a mouthguard overnight in a gym bag because trapped heat and moisture drive odor and bacterial buildup, especially if the guard goes in wet.
FAQ 15: How do I clean the storage case properly?
Clean your storage case at least once a week because a dirty case will contaminate a clean mouthguard the moment you put it back in. Wash the case with dish soap and water, scrub the corners and ventilation holes where grime and moisture collect, then rinse thoroughly and let it dry completely before storing your guard again.
Skip the shortcuts that can backfire. Do not store a mouthguard in a case that is still wet inside, and do not rely on heat as a “fix” if the case is thin plastic. The standard is simple and practical, and it is the same gear-care mindset backed by Dr. Andrew Sarowitz, a licensed sports dentist. Your guard is only as clean as what you store it in.
Takeaway: Wash the case weekly with soap and water, then dry it fully so it does not re-contaminate your mouthguard.
