Do Runners Need Mouth Guards? Here's What You Should Know
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Running is great for your physical health, but have you ever noticed your jaw tightening or your teeth pressing together during a long run? You might be focused on keeping your pace, pushing through fatigue, or reaching the finish line without realizing you're clenching your teeth.
While runners don't typically need mouth guards for the same reasons as contact-sport athletes, those who regularly clench or grind their teeth while running may need extra dental protection. Repeated clenching can put unnecessary pressure on your teeth and jaw muscles, potentially leading to discomfort and dental problems over time.
So, do runners need mouth guards, and can wearing one help protect your teeth during exercise? This article will explore the connection between running and teeth clenching, when a mouth guard may be helpful, and what you can do to protect your oral health.
📑 Table of Contents
Do Runners Need Mouth Guards?
Most runners don't need to wear mouth guards while running. Unlike football, boxing, or hockey, running generally doesn't involve direct physical contact that puts your teeth at high risk of impact injuries. However, runners who frequently clench or grind their teeth during exercise may benefit from discussing dental protection with their dentist.
Teeth clenching, also known as awake bruxism, can happen subconsciously when you're concentrating, stressed, or physically exerting yourself. According to the Cleveland Clinic, repeated clenching and grinding can contribute to tooth wear, jaw pain, headaches, and other dental concerns. If you notice these habits during your runs, it's worth addressing them before they become a recurring problem.
Why Do Runners Clench Their Teeth?
Teeth clenching during running can be associated with physical exertion, concentration, and stress. When you're pushing through a challenging workout, maintaining your pace, or trying to finish a difficult interval, you may unconsciously tighten your jaw. Some runners may also clench their teeth when their bodies become fatigued.
Research has explored this behavior in other physically demanding activities. A 2024 observational study published in PubMed found that 61.4% of the CrossFit practitioners surveyed reported clenching their teeth during training. The researchers also observed signs of tooth wear among participants, although they noted that more research is needed to establish the relationship between exercise and bruxism.
If you repeatedly clench your teeth while running, you may experience jaw muscle fatigue, soreness, headaches, or tooth sensitivity. Over time, persistent bruxism can also contribute to tooth damage. However, occasional jaw tightening doesn't automatically mean you have a bruxism disorder.
How Can Runners Protect Their Teeth While Running?
If you notice yourself clenching your teeth during runs, start by becoming more aware of your jaw position. Try keeping your jaw relaxed, allowing your upper and lower teeth to remain slightly apart when you're not chewing. Relax your facial muscles and avoid holding unnecessary tension as you increase your running intensity.
Here are some practical ways to protect your teeth and manage jaw tension:
- Check your jaw throughout your run. Pay attention to whether your teeth are pressed together, especially during challenging intervals or uphill sections.
- Practice relaxation techniques. Take steady breaths and consciously relax your jaw, shoulders, and facial muscles.
- Avoid unnecessary clenching. You don't need to keep your teeth together to maintain your running form or endurance.
- Stay hydrated. Drink enough water before, during, and after your runs to support overall physical health.
- Visit your dentist regularly. If you experience persistent jaw soreness, headaches, tooth sensitivity, or visible tooth wear, schedule a dental examination.
What about wearing a mouth guard? While the ADA recommends athletic mouthguards for sports with a risk of dental injuries, most runners don't necessarily need one. However, if you regularly clench or grind your teeth, talk to your dentist about whether a night guard may help protect your teeth.
Protect Your Teeth With ClearClub Custom Night Guards

If you also grind or clench your teeth while sleeping, a night guard can help protect your teeth from excessive wear. Addressing nighttime bruxism is another way to take care of your smile beyond your running routine.
ClearClub's custom night guards are made using your dental impressions for a personalized fit. Explore ClearClub Custom Night Guards and give your teeth extra protection while you sleep.
Frequently Asked Questions
❓ Can running cause teeth grinding?
Running doesn't necessarily cause teeth grinding, but physical exertion, concentration, and stress may contribute to unconscious jaw clenching during exercise. If you frequently notice your teeth pressing together while running, try relaxing your jaw and discuss persistent symptoms with your dentist.
❓ Should I wear a mouth guard when running?
Most runners don't need a mouth guard because running generally carries a lower risk of direct dental impact than contact sports. However, if you participate in activities with a higher risk of falls or facial injuries, ask your dentist whether an athletic mouthguard is appropriate.
If you're considering one specifically to manage teeth clenching, consult your dentist about the right type of appliance.
❓ What's the difference between a sports mouthguard and a night guard?
A sports mouthguard and a night guard serve different purposes. A sports mouthguard is designed to absorb impact and protect your teeth, lips, and other oral structures during physical activities. A night guard, on the other hand, creates a barrier between your upper and lower teeth to help prevent damage caused by grinding and clenching.
Both offer dental protection, but choosing the right one depends on your specific needs and when you need protection.
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