If you are wearing a night guard to protect your teeth from clenching or grinding, you are already a step ahead in taking care of your dental health. But here is a question many people ask: When should I replace my night guard?
The answer depends on the type of night guard you have, how you use it, and how well you care for it. Over time, even the best night guards wear down or lose their shape, which can reduce their effectiveness and even cause new problems. In this guide, we will break down how long different types of night guards last, signs it is time to replace yours, and how to extend its life.
Quick Summary: How Long Do Night Guards Last?
| Type of Night Guard | Average Lifespan |
|---|---|
| Soft Night Guard | 6 months to 1 year |
| Hybrid Night Guard | 1 to 3 years |
| Hard Night Guard | 3 to 5 years |
These are just general ranges. Some people may need to replace their night guard sooner, while others can stretch its life with proper care. Let us take a closer look.
Soft Night Guards: Best for Light Grinders
How long do soft night guards last?
Soft night guards are typically made from flexible plastic. They are designed for people with mild bruxism or occasional clenching. Because of their pliable nature, they are comfortable but not as durable.
Lifespan:
Most soft night guards last between 6 months and 1 year.
When to Replace a Soft Night Guard:
- It feels loose or warped.
- Bite marks or cracks start to show.
- You notice increased jaw discomfort or pressure.
- The material feels thinner in some spots.
Soft guards tend to compress over time. Once the material starts flattening out or feels “chewed through,” it is time to get a new one.
Hard Night Guards: Built for Heavy Grinders
How long do hard night guards last?
Hard guards are usually made of acrylic or a similar rigid plastic. These are often recommended for people with moderate to severe bruxism. They are more durable and custom-fitted to your mouth.
Lifespan:
Hard night guards typically last between 3 to 5 years. Some last even longer with careful cleaning and storage.
When to Replace a Hard Night Guard:
- There are visible cracks or chips.
- It no longer fits snugly against your teeth.
- You feel discomfort or notice your bite has changed.
- The acrylic surface starts thinning in high-pressure spots.
Even though they are tough, hard guards are not indestructible. Over time, they can become brittle or lose their shape due to nightly stress.
Hybrid Night Guards: A Balance of Comfort and Durability
How long do hybrid night guards last?
Hybrid guards combine a soft inner layer with a hard outer shell. They are a popular choice for moderate grinders who want comfort without sacrificing protection.
Lifespan:
Hybrid night guards usually last 1 to 3 years.
When to Replace a Hybrid Night Guard:
- The soft inside starts peeling or separating.
- The outer shell cracks or becomes loose.
- You notice a decline in fit or protection.
Because hybrid guards are made from multiple materials, they may wear unevenly. Pay attention to both the inside and outside of the guard during routine cleaning.
Common Signs of a Worn-Out Night Guard
It is not always about how long you have had your night guard. Sometimes the wear and tear speak louder than the calendar. Look out for these signs that it is time to replace your night guard:
1. Cracks or Splits
Tiny cracks can lead to a complete break, especially in hard or hybrid guards. If you spot any fracture lines, do not ignore them.
2. Changes in Fit
If your guard suddenly feels too tight or too loose, it may have warped or your bite may have changed. Either way, that means it is no longer providing the protection it should.
3. Discoloration or Odor
Stains or lingering smells even after cleaning may signal bacteria buildup or material breakdown. These are signs that the guard is no longer hygienic.
4. Thinning or Flattening
If you notice areas where the material looks or feels worn down, especially where your teeth meet the guard, it is time for a new one.
5. Increased Jaw Tension or Pain
If your jaw feels sore or your teeth hurt when waking up, your night guard may no longer be cushioning pressure effectively.
Why You Should Not Wait Too Long to Replace Your Guard
Wearing a worn-out night guard can be just as bad as not wearing one at all. A guard that has lost its shape or structure might:
- Fail to protect your teeth from grinding or clenching
- Shift your bite or cause jaw misalignment
- Harbor bacteria that irritate your gums or lead to bad breath
A night guard is a tool. Like shoes or eyeglasses, it wears out. When it does, it is time to replace it to keep protecting your smile and jaw health.
Also Read These Articles:
- Durability Of Night Guard Materials
- Replacement Cost For Night Guards
- Night Guard Wear And Tear
- Longer-Lasting Night Guard Types
How to Make Your Night Guard Last Longer
You may not be able to make your night guard last forever, but you can extend its lifespan by taking good care of it. Here are some tips:
1. Clean It Daily
Use a soft toothbrush and cool water. Avoid hot water, which can warp the material. Skip toothpaste—it is too abrasive.
2. Deep Clean Weekly
Soak it in a denture-cleaning tablet or a specialized night guard cleaner once a week.
3. Store It Properly
Keep your guard in a ventilated case. Avoid leaving it in your bathroom where it is exposed to heat, steam, and bacteria.
4. Do Not Chew On It
Chewing on your guard, especially if it is soft, will wear it down quickly.
5. Avoid Harsh Chemicals
Do not soak it in mouthwash or bleach. These can break down the materials.
6. Bring It to Your Dentist
At your regular dental checkups, bring your guard with you. Your dentist can inspect it for wear and make sure your bite has not shifted.
Replacement Timeline Cheat Sheet
Still not sure when to replace your night guard? Use this quick reference:
| Guard Type | Typical Replacement Time | Check Every… |
|---|---|---|
| Soft | 6 to 12 months | 3 months |
| Hybrid | 1 to 3 years | 6 months |
| Hard | 3 to 5 years | 12 months |
Note: Heavy grinders may need to replace guards more often, regardless of type.
What If You Grind Through Your Night Guard Early?
If you find yourself replacing your guard sooner than expected, you are not alone. Some people grind so forcefully that even hard guards wear out fast. If this is happening to you:
- Talk to your dentist about adjusting your guard design.
- Consider upgrading to a thicker or dual-laminate model.
- Look into stress-reduction techniques or sleep evaluations to tackle root causes.
Final Thoughts: Replace Your Night Guard Before It Fails You
A night guard only works when it fits properly and offers the cushion and protection your teeth and jaw need. Do not wait for it to break, stink, or hurt before you take action. When in doubt, check it monthly, and replace it when the signs of wear show up.
If you are unsure what type of night guard is right for you—or when to replace it—take our free [Best Night Guard Finder Quiz] or download our Night Guard Care Checklist to stay on track.