How To Fix A Broken Night Guard
26th Apr 2025
Dental night guards are designed to withstand a great deal of pressure. After all, the average strength of a human's bite is roughly 162 pounds per square inch, according to BBC Science Focus Magazine.
However, accidents can happen and sometimes your night guard can become damaged or broken. This can be frustrating, especially if you rely on the night guard to alleviate teeth grinding and jaw clenching during sleep. But don't worry, there are steps you can take to fix a broken night guard.
So, while an effective night guard should be durable, nothing lasts forever. If your oral appliance is cracked, torn, or showing wear, you may wonder how to fix a broken night guard. However, even if a repair is an option, it may not be the best one. Smart patients will also explore whether a replacement offers a better path forward.
Can You Fix a Broken Mouthguard?
When your nightguard breaks, it’s natural to wonder if you can fix it yourself. While minor cracks or splits may be manageable with temporary solutions, not all damage is repairable.
Before attempting any repairs, carefully examine the damage to determine the best course of action. If it is a minor crack or chip, you may be able to fix it yourself with a few simple tools. However, if the damage is more severe or affects the functionality of the night guard, it's best to seek professional help.
Here’s what you can and cannot fix—and the risks to avoid.
What You Can Fix
For very small signs of cracks or splits, there are temporary measures that may provide short-term relief:
Smoothing Sharp Edges: Use a nail file or emery board to gently shape down sharp area edges caused by cracks to prevent irritation. It's important to assess the changes in your night guard's fit and surface, ensuring it offers proper protection for your teeth.
Temporary Adhesives: If your night guard has cracked, a quick fix involves using a dental resin to fill in the fracture, ensuring it remains effective in protecting your teeth. Dental-safe adhesives may also help bond minor cracks for temporary use. However, these fixes are not permanent and should only be used as a stopgap.
Note: Keep in mind that these temporary fixes should only be used until you can get a new night guard.
What You Cannot Fix
Some damage simply cannot and should not be repaired at home:
Large Splits or Tears: Once the night guard is split into two or more pieces, from this point on, it cannot be effectively repaired. This type of damage requires a replacement from your dentist.
Deep Cracks: If the crack is deep and reaches the inner layers of the night guard, it may compromise its structural integrity. In this case, it's best to get a new night guard to ensure proper protection for your teeth.
Worn Down Material: Over time, the material of your night guard may wear down due to regular use. While small imperfections can be fixed with adhesives, extensive wear and tear will require replacement.
Missing or Broken Pieces: Missing sections compromise the guard’s structure, fit and alignment, making it unsafe to use.
Warping: Heat exposure can cause the guard to warp, and attempting to remold it at home can worsen the damage or further degrade the material.
Note: It's important to regularly inspect your night guard for any signs of damage or wear and tear. If you notice any changes in fit or cracks, consult with your dentist for proper repair or replacement options.
Risks of DIY Repairs
While the internet is full of “quick fixes,” the risks of trying to repair your night guard yourself outweigh the benefits:
Voiding Warranties: Most warranties do not cover DIY repairs, leaving you without recourse if further damage occurs.
Toxic Materials: Using household adhesives like super glue introduces harmful chemicals into your mouth.
Improper Fit: A poorly repaired night guard may no longer provide adequate protection, increasing the risk of tooth damage or jaw pain.
Injury Risk: Sharp edges or uneven thickness and surfaces from improper fixes can irritate or injure your gums and cheeks.
Repair vs. Replacement: What’s the Best Option?
Deciding between repairing or replacing it depends on a few things like the damage and how well it still fits. Here’s a quick guide and basis to help you choose:
When Repair Makes Sense
Minor Damage: Small cracks or splits can sometimes be temporarily fixed with dental-safe adhesives or by smoothing rough surface edges.
Good Condition Overall: If your night guard is still fairly new and fits well, an appointment with a dentist for professional repair might be worth considering.
Note: Keep in mind, repairs are often short-term fixes and may not hold up under regular grinding.
When to Replace
Major Damage: Big cracks, missing pieces, or broken guards can’t be repaired safely.
Frequent Breaks: If your guard has holes or wears out quickly, it’s time for a stronger replacement.
Old or Poor Fit: An old mouthpiece that no longer fits or feels comfortable should be replaced to ensure proper protection.
What’s the Best Choice?
Repairs can work for minor issues, but for anything major or recurring, replacement is the safer and more effective option. Pro Teeth Guard offers custom-fit night guards that are durable, comfortable, and affordable—perfect for long-term use.
If you’re unsure, reach out! We’re here to help you manage your teeth from minor to severe cases of bruxism and help you sleep better.
- Most Popular
- Hard Outside, Soft Inside
- 2MM Thick
- Moderate / Heavy
- Most Durable
- Hard Materials
- 1.5MM Thick
- Heavy / Severe
- For Day Time Use
- Thin, Barely Visible
- 1MM Thick
- Light / Moderate
- For Clenching
- Flexible & Soft
- 1.5MM Thick
- Light / Moderate
Do Broken Night Guards Work?
It’s tempting to keep using a broken night guard to avoid buying a new one, but doing so can harm your oral health. Continuing to use a damaged night guard can lead to further damage and may not provide adequate protection for your teeth. Here’s why:
Cracked Night Guards
Night guards can crack over time due to calcium buildup or wear from grinding. A cracked guard isn’t safe—it can break further under pressure and may even cut the inside of your cheeks, causing painful sores.
Night Guards with Holes
Holes in your night guard from grinding are a clear sign it’s time for a replacement. Holes mean the guard isn’t offering full protection, which could lead to tooth damage or jaw pain. You may need a stronger, more durable guard.
Night Guards Broken in Half
If your night guard breaks in half, it’s time to replace it. A broken guard can’t protect your teeth or jaw, and it may indicate you need a stronger guard, like a hard night guard, for better protection.
A broken night guard will only lead to more dental issues, so it’s important to replace it when necessary to maintain your oral health.
Tip: It's best to consult with your dentist to determine the best solution for your specific case. They may recommend getting a new custom-made night guard or suggest other treatment options if needed. Remember, taking care of your oral health is essential, and investing in a high-quality night guard can help protect your teeth from further damage and discomfort. Don't hesitate to seek professional advice for any concerns regarding your dental health.
What to Do Until It’s Fixed or Replaced
We know how frustrating it can be to deal with a broken night guard. While fixing or replacing it is the best solution, here are a few temporary fixes to get you by until then.
Over-the-Counter Mouthguards
An over-the-counter (OTC) mouthguard can be a quick fix. Look for boil-and-bite options that align and adjust to your teeth. While not as comfortable as a custom night guard, they’ll provide some protection from grinding.
Using the Undamaged Portion of a Split Guard
If only part of your night guard is damaged, you might be able to use the undamaged side. But be cautious—this can cause discomfort, and it’s not a long-term solution.
Risks of Using a Damaged Night Guard
While it’s tempting to keep using your broken guard, it could lead to:
- Discomfort: A cracked guard can irritate your gums.
- More Damage: Continued use can make the problem worse.
- Less Protection: A poor fit won’t protect your teeth properly.
Using a damaged guard can cause more harm, so it’s important to address the issue as soon as possible.
6 Common Reasons Why Night Guards Break?
Night guards are designed to withstand the pressure of regular grinding and clenching, but they aren’t indestructible. While an effective night guard is built to be durable, it’s important to remember that nothing lasts forever.
Over time, various factors can cause them to break or wear out. Here are some common reasons:
1. Wear and Tear:
Night guards experience constant pressure from grinding or clenching, which can lead to cracks, splits, or thinning effects over time.
2. Improper Storage:
Storing your night guard outside its protective case or exposing it to extreme temperatures can cause it to warp or weaken.
3. Poor Cleaning Habits:
Using harsh chemicals, hot water, or abrasive materials can degrade the material, making it brittle and prone to breaking.
4. Chewing or Biting:
Chewing on the night guard, either intentionally or accidentally, can cause significant damage, especially in soft or thin areas.
5. Low-Quality Materials:
Over-the-counter night guards or poorly fitted guards are often made from less durable materials, making them more prone to damage.
6. Pets Chewing on Night Guards:
Dogs love to chew on night guards! The smell of saliva can be irresistible to them. To keep your night guard safe, always store it in a sturdy case and out of your pet’s reach.
Night Guard LifeSpan
The lifespan of your night guard depends on two key factors: grinding severity and maintenance.
- Grinding Severity: Light to moderate grinders tend to keep their night guards longer, as they cause less wear and tear. Heavy grinders, however, will wear down their guards more quickly.
- Care & Maintenance: Proper cleaning and storage significantly extend the life of your night guard. Regular maintenance helps prevent damage and deterioration.
The type of night guard matters too. Over-the-counter mouthguards don’t last as long or work as well as custom-fit guards made in a dental office. Additionally, thicker guards last longer because they’re more durable. Hard acrylic guards generally have a longer lifespan than soft ones.
Here's how long you can expect your night guard to last:
- Soft night guards: These offer more comfort than durability. They last between 6 months and 2 years.
- Hybrid night guards: These have a soft inside with a durable outer layer. They last between 1-3 years.
- Hard night guards: These are the toughest type of mouth guard. They last between 2-5 years.
Tips on How To Prolong The LifeSpan of a Night Guard
The best way to preserve a mouthguard is to properly clean and care for it. Take a toothbrush and toothpaste to your night guard daily after each time you use it. Always store it in a dry, clean case. It is also a good idea to deep clean your night guard once a week to avoid calcium and bacteria buildup, stains, mold growth, etc. Some effective cleaning methods include:
- Denture cleaning tablets
- White vinegar
- Hydrogen peroxide
- Baking soda
Maintaining a consistent habit of properly cleaning and storing your night guard can significantly prolong its lifespan and effectiveness in protecting your teeth. To clean your night guard effectively, use a mild soap and warm water to remove bacteria and plaque, ensuring it remains hygienic and comfortable for use. We advice against using bleach products to clean your night guard as it can damage the device.
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Frequently Asked Questions:
1. How much does it cost to replace a broken night guard?
Night guard prices can vary. Over-the-counter kit options cost $10-$30, but they may not be as durable. Custom-fit night guards, like those from Pro Teeth Guard, range from $169.99 to $209.99 and offer better protection. Professionally made night guard from the dentist can be much pricier, $300-$800.
2. Do dentists offer a warranty on night guards?
Some dentists offer warranty on custom night guards, but coverage can vary. Meanwhile, Pro Teeth Guard includes a 1-year warranty and 110% money-back guarantee on its custom night guards, so your investment is protected.
Conclusion:
A well-maintained night guard acts as a crucial barrier against the wear and tear of grinding, ensuring your dental health remains intact while you result in a restful night's sleep.
By addressing any issues with your night guard quickly, you can prevent not only discomfort but also complications such as tooth decay that can arise from improper alignment during sleep. Additionally, a malfunctioning night guard can lead to tooth sensitivity, making it painful to consume hot or cold foods and beverages.
Dealing with a broken night guard can be a frustrating thing, but it’s important to address the issue quickly to protect your smile and avoid further complications.
Here’s a quick recap of your options:
- Minor damage can sometimes be repaired temporarily, but significant cracks or breaks require replacement.
- Replacement is often the best option, especially if your guard is no longer effective or fits properly. Custom-fit night guards, like those from Pro Teeth Guard, offer lasting protection and comfort.
- Prevention is key—proper care and storage can help extend the life of your night guard and prevent future damage.
If you’re unsure whether your night guard can be repaired or needs replacing, Pro Teeth Guard is here to help. We offer custom-fit mouthguards made in a professional dental lab for affordable prices. Plus, every night guard is guaranteed to fit comfortably with our 110% money-back guarantee. Don't wait—take action today to protect your teeth and improve your quality of sleep.
- Most Popular
- Hard Outside, Soft Inside
- 2MM Thick
- Moderate / Heavy
- Most Durable
- Hard Materials
- 1.5MM Thick
- Heavy / Severe
- For Day Time Use
- Thin, Barely Visible
- 1MM Thick
- Light / Moderate
- For Clenching
- Flexible & Soft
- 1.5MM Thick
- Light / Moderate
