A night guard and sports mouth guard are designed for different purposes. A night guard is generally used to separate and protect the teeth when a person grinds or clenches them, while a sports mouth guard is designed to help reduce the risk of dental and oral injuries during physical activity. They should not automatically be treated as interchangeable appliances.

What Is a Night Guard?

A night guard is an oral appliance commonly used for people who grind or clench their teeth.

Bruxism can occur while a person is awake or asleep. The National Institute of Dental and Craniofacial Research notes that bruxism can contribute to tooth damage, jaw discomfort, and headaches in more severe cases. Mouth guards can separate the teeth and help prevent some tooth damage.

Patients can learn more about the clinic's night guard service.

What Is a Sports Mouth Guard?

A sports mouth guard is designed to reduce the risk of injuries to the teeth and other oral structures during sports and activities where the face or mouth may receive an impact.

The American Dental Association recommends properly fitted mouthguards for athletic activities and distinguishes custom-made mouthguards from stock and boil-and-bite alternatives.

The clinic offers a separate custom sports mouth guard service.

Night Guard vs Mouth Guard: What's the Difference?The exact appliance and fit should be based on its intended purpose.
Can You Use a Sports Mouth Guard for Teeth Grinding?

A sports mouth guard should not automatically be used as a substitute for an appliance intended to manage nighttime grinding or clenching.

Sports mouthguards are engineered around protection during impact. A night guard serves a different function.
If you suspect bruxism, discuss the signs with a dentist rather than simply purchasing an appliance designed for a different purpose.
Can You Use a Night Guard for Sports?

A night guard is mainly used to protect teeth from grinding or clenching, usually while sleeping.

A sports mouth guard is designed to protect the teeth and mouth from injuries caused by impacts during sports or physical activity.

Although both appliances protect the teeth, they are made for different purposes and are not automatically interchangeable. The right appliance depends on how and when you need to use it.

A night guard should not automatically be considered athletic protection.

A sports mouthguard is designed to help absorb or distribute forces from impact. The American Dental Association specifically recommends mouthguards for athletic activities where injury risk exists.

How Do You Know You May Be Grinding Your Teeth?

Possible signs of bruxism can include:

Morning jaw soreness
Worn or flattened teeth
Tooth sensitivity
Jaw fatigue
Headaches
Damage or fractures to teeth
A partner noticing grinding sounds during sleep

These signs do not prove that you have bruxism. A dental assessment can help determine whether tooth wear or other findings are consistent with grinding or clenching.

The NIDCR identifies tooth damage, jaw pain, and headaches among possible consequences of more severe bruxism.

What Should Athletes Look For in a Mouth Guard?

Fit matters.

A suitable sports mouthguard should:

Be appropriate for the activity.
Stay in position without excessive movement.
Allow the wearer to breathe and communicate reasonably well.
Provide protection for the teeth and surrounding oral structures.
Be maintained according to the manufacturer's or dental provider's instructions.

The ADA notes that custom-made mouthguards are produced using an impression of the individual's mouth.

What About an Over-the-Counter Mouth Guard?

Not every over-the-counter appliance serves the same purpose.

Stock mouthguards, boil-and-bite products, and custom-fitted appliances differ in fit and fabrication. The appropriate choice depends partly on what you are trying to protect against.

For persistent grinding or significant sports protection needs, discussing the appliance with a dental professional can provide more useful guidance than choosing solely from packaging claims.

How Often Should a Night Guard Be Replaced?

There is no single replacement interval that applies to every appliance.

Replacement may be needed when:
The appliance becomes worn.
It no longer fits correctly.
It becomes cracked or damaged.
Your teeth or bite change.

It no longer provides appropriate protection.

Your dentist recommends a new appliance.

For patients already using a night guard, the clinic also has information about replacing a night guard for teeth grinding.

FAQs
Are a night guard and sports mouth guard the same?
No. A night guard is generally associated with grinding and clenching, while a sports mouthguard is intended for protection against athletic impacts.

Can a night guard stop me from grinding?
It may help protect the teeth from damage, but an appliance should not be described as a guaranteed cure for bruxism. The underlying factors associated with grinding can vary.

Do children need sports mouthguards?
Children who participate in activities with a risk of oral injury may benefit from an appropriately fitted mouthguard. The ADA advises using mouthguards for sports where facial or oral injury is a concern.

Is a custom mouthguard better than a store-bought one?
Custom-made mouthguards can provide a personalized fit because they are fabricated from an impression of the mouth. Whether custom treatment is appropriate depends on the individual and activity.

What should I do if my night guard is uncomfortable?
Stop using an appliance that causes significant discomfort and have the fit evaluated. An ill-fitting appliance may not provide the intended benefit.

Why do my teeth hurt in the morning?
Morning tooth or jaw discomfort can have several causes. Grinding or clenching is one possibility, but an examination is needed to determine the cause.

Next Step
Choosing between a night guard and sports mouth guard begins with identifying the problem you want the appliance to address. Patients can review the clinic's night guard treatment information, custom sports mouth guard service, or request an appointment.