If you wake up with a sore jaw, dull morning headaches, or a partner who can hear you grinding your teeth through the wall, a gum shield for bruxism is very likely the right starting point — and a dentist-made one will almost always outperform anything you find at a drugstore. But before you order the first thing that pops up in a late-night search, here are seven things our dental team wants you to understand so you make a choice that actually protects your teeth.
1. “Gum Shield,” “Night Guard,” and “Occlusal Splint” All Mean Roughly the Same Thing
The terminology can get confusing fast. In the UK and parts of the dental world, a removable appliance worn to protect teeth from grinding or clenching is commonly called a gum shield. In the US you’ll hear night guard, occlusal guard, bite guard, or bruxism splint. They all describe the same basic idea: a barrier between your upper and lower teeth that absorbs the force of grinding and keeps enamel from wearing away.
The real distinctions come from design and material, not from what you call it. More on that in a moment.
2. Bruxism Is More Common Than Most People Realize
The National Institute of Dental and Craniofacial Research estimates that bruxism affects roughly 10% of adults and up to 15% of children, though many grinders have no idea it’s happening because it occurs mostly during sleep. Awake clenching (sometimes called awake bruxism) is a separate but related habit that can be just as damaging over time.
Common signs you may be grinding or clenching:
- Teeth that look shorter, flatter, or more translucent at the edges
- Jaw soreness or stiffness in the morning
- Frequent tension headaches, especially in the temples
- Teeth that feel suddenly sensitive to cold
- A partner reporting a grinding sound while you sleep
- Chipped or cracked teeth without a clear injury
- Soreness or “clicking” in the jaw joint (TMJ)
If several of those sound familiar, a proper evaluation is the right next step — not just a generic guard off a drugstore shelf.
3. Over-the-Counter Guards and Custom Guards Are Not Equivalent
This is the one patients most often get wrong. A boil-and-bite guard from a pharmacy costs $20–$50 and will provide some protection. It is better than nothing. But there are real tradeoffs.
- Fit: OTC guards are bulk-molded approximations. A loose or poorly fitting guard can actually shift your bite, cause jaw soreness, or — in rare cases — worsen clenching.
- Material: Many OTC options are made from a soft material that heavy grinders chew through surprisingly fast (sometimes in weeks). That same softness can actually encourage more forceful clenching in some people.
- Thickness and coverage: A custom guard is designed for your specific arch and bite. The thickness can be adjusted based on how severe your grinding is and whether you have any existing tooth damage or jaw issues.
- Durability: A professionally made hard or dual-laminate guard typically lasts 3–5 years with proper care. Most OTC guards last months at best for moderate-to-heavy grinders.
A custom guard from a dental office also gives you something no online kit can: a dentist’s eyes on your mouth first, so any existing damage, signs of TMJ involvement, or bite issues get addressed alongside the guard — not missed entirely.
4. There Are Several Types — the Right One Depends on Your Situation
Not all bruxism guards are designed the same way, and the differences matter.
- Soft night guard: Comfortable and a common first choice for mild bruxers. Not ideal for heavy grinders — the soft material can actually be satisfying to chew, making clenching worse for some people.
- Hard acrylic guard: The traditional workhorse for moderate to severe grinding. Durable, doesn’t encourage biting, and can be adjusted to balance the bite.
- Dual-laminate (hard outside, soft inside): Combines comfort with durability. A good middle-ground option for many patients.
- NTI-tss (anterior bite stop): A smaller device that covers only the front teeth and is sometimes used for migraine prevention or TMJ-related bruxism. Requires careful fitting and monitoring — not appropriate for every patient.
The design your dentist recommends will factor in the severity of your grinding, any existing TMJ symptoms, and the current state of your teeth. There is no one-size-fits-all answer here.
5. A Guard Protects Teeth — But It Doesn’t Treat the Cause
This is an important distinction. A gum shield for bruxism is a protective appliance, not a cure. It prevents further enamel wear and reduces stress on the jaw joint. What it does not do is eliminate the underlying grinding behavior.
Bruxism has multiple potential contributors, and research published in the Journal of Oral Rehabilitation links it to stress, sleep disorders (especially obstructive sleep apnea), certain medications (particularly SSRIs), and genetics. Addressing those factors alongside wearing a guard leads to better long-term outcomes than a guard alone.
If you’re grinding significantly, it’s worth mentioning to your doctor too — especially if you snore or feel unrefreshed after sleep. Sleep apnea and bruxism frequently co-occur, and treating the apnea often reduces grinding.
6. How You Care for Your Guard Matters More Than Most People Think
A well-made custom guard can last years — if you take care of it. Here’s what our team consistently recommends:
- Rinse it right after removing it, before saliva and debris dry on the surface.
- Brush gently with a soft toothbrush and a small amount of non-abrasive toothpaste or dish soap. Harsh toothpastes can scratch the surface and create spots where bacteria can accumulate.
- Let it air dry completely before storing it in its vented case. Storing a damp guard invites bacterial growth and odor.
- Keep it away from heat. A hot car dashboard or a cleaning cycle in the dishwasher can warp the material permanently.
- Bring it to your dental checkups. Your dentist can check for wear patterns that tell you (and them) a lot about how your grinding is progressing.
- Replace it when it shows significant wear, when the fit changes, or at least every few years even if it looks fine.
7. Your Insurance May Cover Part of the Cost — and It’s Worth Asking
Custom night guards typically run between $300 and $800 nationally (those are general ballpark figures, not our office’s prices — your actual cost will vary). That feels like a lot until you compare it to the cost of repairing ground-down, cracked, or broken teeth: crowns alone can run $1,200–$2,000 per tooth, and grinding damage rarely stops at one.
Many dental insurance plans cover occlusal guards, at least partially, especially when there’s documented evidence of bruxism or TMJ symptoms. It’s always worth calling your insurance to ask whether it’s covered under your plan — and our front desk team is happy to help you understand your benefits before any appointment.
At Vaksman Dental Group in South San Francisco, our dentists take a thorough look at how your bite is holding up at every exam. If grinding is a concern, they’ll talk through your guard options honestly — including whether a custom appliance is the right fit for your situation, or whether something else should come first. We also fit custom dental mouth guards in-house, so there’s no outsourcing your bite to a lab you’ve never heard of.
If you’re already showing wear patterns or waking up sore, you may also want to ask about whether TMJ treatment in South San Francisco should be part of your care plan — guards and TMJ therapy often work together for the best results. And if grinding has already caused real tooth damage, restorative dentistry can help rebuild what’s been worn away.
The Bottom Line
A gum shield for bruxism is one of the simplest, most cost-effective ways to protect your teeth from one of the most common and underdiagnosed habits in dentistry. The drugstore version is better than nothing; the custom version is better, full stop. More importantly, the guard is a starting point — not an ending point. Understanding what’s driving the grinding and caring for your whole jaw health alongside it is what actually moves the needle long-term. If morning soreness and worn-down teeth sound familiar, that’s the conversation worth having at your next visit.
Frequently Asked Questions
Can I wear a gum shield for bruxism if I have dental crowns or veneers?
Yes, and in fact it’s especially important if you have restorations. Grinding can crack or dislodge crowns and veneers just as it damages natural teeth. A custom guard is typically recommended to protect existing dental work, and your dentist will account for the restorations when designing and adjusting the appliance.
How long does it take to get used to sleeping with a night guard?
Most people adjust within two to four weeks. The first few nights may feel awkward or disrupt sleep slightly. Wearing it consistently, even when it feels odd, is key to building the habit. If discomfort persists beyond a month, go back to your dentist — an adjustment to the fit or bite can make a big difference.
Can a gum shield make jaw clenching worse?
A poorly fitting or very soft guard can occasionally increase clenching in some patients — which is one reason a professionally fitted appliance and a follow-up check are worth the investment. If you’re finding your jaw feels worse after starting a new guard, mention it at your next visit so the fit or material can be reassessed.
What’s the difference between a bruxism guard and a sports mouthguard?
They look similar but serve different purposes. A sports mouthguard is designed to absorb impact and protect teeth, lips, and gums from external trauma during contact sports. A bruxism guard is engineered to withstand repetitive grinding forces, distribute bite load evenly, and protect enamel from wear over many hours of use each night. Using a sports guard for sleeping grinding (or vice versa) is not recommended — each is optimized for a specific job.
Ready to protect your teeth? Schedule an appointment with our team in South San Francisco.
Written by the Vaksman Dental Group team and medically reviewed by Dr. Irena Vaksman, DDS — South San Francisco. Last reviewed September 2026.