Night Guards vs. Mouthguards: What's the Difference?
While the terms are often used interchangeably, night guards and mouthguards serve very different purposes. A night guard protects your teeth from grinding and clenching while you sleep, while a mouthguard protects your teeth from impact during sports and physical activity. Both are custom dental appliances, but they're designed differently for their specific jobs. Choosing the right one — and having it custom-fitted — makes all the difference in comfort and protection.
What Is a Night Guard?
A night guard is a custom-made appliance worn during sleep to protect your teeth from the damaging effects of bruxism — the clinical term for teeth grinding and jaw clenching. Many people grind their teeth at night without realizing it, and over time this can wear down enamel, crack teeth, damage existing crowns, and contribute to jaw pain. Night guards are typically made from a durable but comfortable material and are designed to create a protective cushion between your upper and lower teeth.
Signs you may benefit from a night guard include:
- Waking up with a sore jaw, facial muscles, or headaches
- Worn, flattened, or chipped teeth
- Increased tooth sensitivity
- A partner who notices grinding sounds at night
- Tension or clicking in the jaw joint
What Is a Mouthguard?
A mouthguard is designed to absorb and distribute the force of impact during sports and physical activities, protecting your teeth, lips, cheeks, and jaw from injury. They're essential for contact sports like football, hockey, lacrosse, and boxing, but they're also valuable for non-contact activities with fall or collision risk, such as skateboarding, gymnastics, and mountain biking. A properly fitted mouthguard can be the difference between a close call and a knocked-out tooth.
Mouthguards are especially important for young athletes, whose teeth and jaws are still developing and who are frequently involved in sports throughout the school year.
The Key Differences at a Glance
Although both appliances fit over your teeth, they differ in several important ways:
- Purpose: night guards protect against grinding; mouthguards protect against impact
- When worn: night guards are worn during sleep; mouthguards during sports and activity
- Thickness and design: mouthguards are generally thicker to absorb impact, while night guards are designed for comfortable long-wear during sleep
- Fit priorities: night guards prioritize a precise bite relationship; mouthguards prioritize shock absorption and retention during movement
Why Custom-Fit Matters More Than You Think
Over-the-counter “boil-and-bite” guards are inexpensive, but they come with real drawbacks: they're often bulky, fit poorly, interfere with breathing and speech, and tend to fall out or shift during use. A custom guard from Dr. Byron Desbordes is molded to the exact anatomy of your teeth, which means better protection, better comfort, and a guard you'll actually wear consistently. For athletes, a well-fitted mouthguard can also help absorb the impact that leads to jaw fractures and may reduce the risk of dental emergencies like knocked-out teeth.
The Connection Between Grinding and Jaw Pain
Chronic grinding doesn't just wear down teeth — it's also closely linked to temporomandibular joint (TMJ) disorders. If you experience persistent jaw pain, clicking, or tension headaches alongside grinding, a night guard may be part of a broader TMJ therapy plan. Dr. Desbordes can evaluate whether your symptoms point to simple bruxism or a more involved jaw joint issue, and recommend the right treatment approach.
Which One Do You Need?
The simplest way to decide: if you grind your teeth at night, you need a night guard. If you play sports or participate in activities with impact or fall risk, you need a mouthguard. Many patients — especially active adults who also grind — benefit from both. A consultation is the best way to determine exactly what will protect your smile, and to get a custom-fitted appliance designed for your specific needs.
Talk to a Baltimore, MD Dentist About Custom Guards
Dr. Byron Desbordes, DDS provides custom night guards and sports mouthguards for patients across Baltimore, Windsor Mill, Woodlawn, Catonsville, and Ellicott City. Whether you're protecting your teeth from nighttime grinding or gearing up for the sports season, our team can create a comfortable, custom-fit guard built to last.
Schedule a fitting with Dr. Byron Desbordes, DDS by calling (410) 277-0138 today.