If you've been told you grind your teeth or clench your jaw—and you're experiencing jaw pain, headaches, or worn teeth—a night guard may have been recommended. But do they really help? The short answer: yes, for many people. Night guards can reduce the force of grinding, protect your teeth, and ease muscle and joint strain. They're one of the most common and effective conservative treatments for bruxism and TMJ-related pain. Here's what you need to know.
How Night Guards Work
A night guard is a custom-made appliance that fits over your upper or lower teeth. It creates a barrier between your teeth, so when you grind or clench, the guard absorbs the force instead of your teeth and jaw. This can:
- Protect your teeth — Prevent wear, chipping, and cracking
- Reduce muscle strain — Cushion the joint and allow muscles to relax
- Decrease pain — Many patients report less jaw pain, headaches, and facial tension after starting to wear one
Custom vs. Over-the-Counter
Custom night guards are made from impressions or scans of your teeth. They fit precisely, are more comfortable, and tend to last longer. Over-the-counter "boil-and-bite" guards are less expensive but often fit poorly, can be bulky, and may not provide the same level of protection or comfort. For TMJ and bruxism, a custom guard from your dentist is typically the better choice.
What to Expect
- Adjustment period — It may take a week or two to get used to wearing a guard at night. Stick with it.
- Relief — Many people notice reduced pain and tension within a few weeks. Results vary.
- Consistency — Wearing the guard every night is important. Skipping nights can allow symptoms to return.
- Maintenance — Rinse the guard in the morning, brush it gently, and store it in its case. Avoid hot water, which can warp it.
When Night Guards May Not Be Enough
Night guards are effective for many people—but they're not a cure-all. If you have significant TMJ disorder, bite issues, or other contributing factors, you may need additional treatment: bite adjustment, physical therapy, stress management, or referral to a specialist. Your dentist can assess your situation and recommend a comprehensive plan.
The Bottom Line
Night guards really do help many people with jaw pain and teeth grinding. They're a proven, conservative first step. If you've been recommended one, give it a fair trial—wear it consistently for several weeks. If you're still in pain, follow up. There may be more that can be done.