Two very different guards
The word covers two appliances with almost nothing in common beyond where they sit. A night guard protects teeth from grinding and clenching during sleep and is usually a firm, thin splint on one arch. A sports mouthguard absorbs impact during contact sport and is thicker, softer and built to cushion a blow.
They are not interchangeable. A sports guard worn overnight is bulky, encourages more clenching and wears through quickly. A night guard worn on the field offers almost no impact protection. If you need both, you need two.
Night guards for grinding and clenching
Most people who grind their teeth do not know it. It happens during sleep, and it is usually a partner mentioning the noise, or our finding the wear, that brings it to light. The forces involved are several times normal chewing and sustained for hours.
Signs worth recognising:
- Waking with jaw soreness or headaches around the temples
- Teeth worn flat, with edges that have lost their natural contour
- Chipped enamel, or fillings and crowns that keep failing
- New sensitivity as enamel thins
- Ridges along the inside of the cheeks or scalloped edges on the tongue
- Teeth that ache without any decay to explain it
A night guard does not stop you grinding — nothing reliably does — but it gives the forces something to act on other than your teeth, and it lets the overworked muscles rest. For most patients it is what finally ends the morning headaches and the jaw soreness that comes with waking up clenched.
The economic argument is blunt. Years of unchecked grinding wears teeth down to the point of needing crowns across the whole back of the mouth. A night guard costs a fraction of one crown.
Sports mouthguards
Any sport with a risk of contact or a flying ball warrants a guard: football, basketball, baseball, martial arts, hockey, skateboarding, boxing. Dental injuries in sport are common, expensive and permanent — a knocked-out adult tooth is a lifetime of replacements, starting immediately.
A guard also cushions the lower jaw against impacts driven up into the joint, and protects the soft tissues from being cut against the teeth. If your child wears braces, a guard is essential rather than optional — brackets turn any impact into a laceration of the lip.
Custom or over the counter?
| Custom-made | Boil-and-bite | |
|---|---|---|
| Fit | Moulded to your teeth exactly | Approximate at best |
| Stays in place | Yes, without clenching on it | Often needs biting to hold |
| Breathing and speech | Minimal interference | Noticeably bulky |
| Protection | Even thickness where it is needed | Thins over the biting surfaces |
| Lifespan | Several years | A season at most |
| Actually worn | Usually | Frequently abandoned |
That last row decides everything. A guard in a drawer protects nothing, and the main reason boil-and-bite guards end up there is that they are uncomfortable enough to resent. Poor fit also matters for night guards specifically: an ill-fitting guard can shift teeth slightly over months, which is the opposite of what you wanted.
Getting one made
Examination
We check the wear patterns, your bite and your jaw joints, and confirm which type of guard you need. For grinding we also look for what is driving it, because stress, bite problems and sleep issues all feed in.
Digital scan
A quick scan of both arches — no impression material — captures your teeth exactly and records how your jaws meet.
Laboratory fabrication
The guard is made to your scan in the material and thickness appropriate for its job. Sports guards can be made in team colours, which noticeably improves the odds a teenager wears it.
Fitting and adjustment
We check it seats fully, sits comfortably and does not throw your bite off. Small adjustments now prevent it being abandoned later.
Review
We check the guard and the wear on it at your regular visits. How it wears tells us how hard you are grinding, which is useful information in itself.
Looking after it
Rinse it in cool water after every use and brush it gently with a soft brush and mild soap — not toothpaste, which is abrasive enough to scratch the surface and harbour bacteria in the grooves. Let it dry completely before it goes in its case, since a damp guard in a closed box grows bacteria quickly.
Never use hot water, and never leave it on a car dashboard or windowsill. The material distorts with heat and a warped guard no longer fits.
Keep it in its ventilated case, not loose in a bag — and out of reach of dogs, which are extraordinarily fond of them. Bring it to your checkups so we can assess the fit and the wear.
What mouthguards cost, and coverage
A custom guard costs considerably more than a drugstore one and considerably less than repairing what it prevents. We examine and scan, then quote before anything is made.
Many PPO plans contribute toward a night guard where grinding is documented, since it is preventive treatment for a diagnosed condition. Sports guards are usually not covered. Medi-Cal / Denti-Cal coverage is limited. We check your specific plan and tell you the real number beforehand.
Mouthguards for Riverpark, North Fresno and nearby
We are at 6319 N Fresno St, Suite 101, minutes from Riverpark in north Fresno, with easy parking. Patients come to us from Fresno, Clovis, Sanger, Selma, Fowler, Kerman and Madera.
Dr. Kamaldeep Singh fits every guard personally, and our team is bilingual in English and Spanish. If you are waking with a sore jaw, or your child plays contact sport, book a visit — it is one appointment and a scan.
Frequently asked questions
How do I know if I grind my teeth at night?
Common signs are waking with jaw soreness or temple headaches, teeth worn flat, chipped enamel, fillings that keep failing, and ridges along the inside of your cheeks. Most people only find out when a dentist spots the wear.
Is a custom night guard worth it over a drugstore one?
Yes. A custom guard fits without you having to clench on it to hold it in, lasts years rather than a season, and is comfortable enough that it actually gets worn. An ill-fitting guard can also shift teeth over time.
Can I use my sports mouthguard at night?
No. Sports guards are thick and soft, which makes them bulky overnight, encourages more clenching and wears them out fast. Night guards offer little impact protection on the field. If you need both, you need two.
How do I clean my mouthguard?
Rinse in cool water after every use and brush gently with a soft brush and mild soap — not toothpaste, which scratches the surface. Dry it fully before it goes in its case, and never use hot water or leave it in a hot car.
How long does a custom mouthguard last?
Several years for a night guard, depending on how hard you grind. Sports guards need replacing more often, particularly for children whose teeth are still coming through. Bring it to checkups and we will assess the wear.
Does insurance cover a night guard?
Many PPO plans contribute where grinding is documented, since it is preventive treatment for a diagnosed condition. Sports guards are usually not covered and Denti-Cal coverage is limited. We check your plan first.
Do you take Medi-Cal / Denti-Cal for this treatment?
Yes — we welcome Medi-Cal and Denti-Cal patients, and we also accept all major PPO insurance and cash. Bring your Benefits Identification Card and our team will verify what your plan covers before treatment.
Patient guides Dr. Kamaldeep Singh, DDS wrote on the questions that come up most.
- Night Guards for Teeth Grinding
How a guard protects worn teeth, and what it will not do.
4 min read → - Protecting Teeth During Sports
Why a fitted guard matters more than most parents expect.
4 min read → - Habits That Damage Your Teeth
Grinding is only one of them. Here are the rest.
4 min read →
