The Best Night Guards for Bruxism, According to Dentists

We rate SmileSet’s custom night guard the best night guard for teeth grinding in 2026. It costs $149 for one arch or $199 for both, and it needs no impression if SmileSet or SmileDirectClub already has your file. A sore jaw or worn, chipped teeth in the morning usually means bruxism, the habit of grinding or clenching in your sleep. A custom guard from an online lab protects your teeth for far less than a dentist-made guard, and below are the five we recommend.

What You Need to Know

• SmileSet is our top pick. $149 single arch or $199 dual arch, a 30-day full refund, and no impression kit if SmileSet or SmileDirectClub already has your mold. Our sample matched SmileSet’s description.
• JS Dental Lab is the pick for heavy grinders who want a choice of thickness and material, plus the longest guarantee on this list.
• Custom guards from online labs are cheaper than dentist-made guards, but no independent study has shown they are equal in fit or protection¹. We compare on price, guarantee, and what each company actually publishes.
• See a dentist or doctor first if you snore heavily, stop breathing in your sleep, or have jaw pain that will not settle. A standard night guard can make untreated sleep apnea worse².

Our Top Picks for 2026

Every guard below is made from a mold of your teeth, either an at-home impression kit or a file the company already holds. Prices are what each company listed on September 3, 2026, for a single arch unless noted, and they change with promotions.

How We Chose

We compared each brand on published price, arch options, guarantee and remake terms, and delivery time. We also checked whether the FDA’s 510(k) database shows a clearance under the company’s name. We read each company’s product pages and FAQ in early September 2026 and rechecked the FDA records ourselves. We have a SmileSet sample in hand, and it matched SmileSet’s description.

We did not run a lab test, and no independent study compares online custom guards with dentist-made guards on fit, retention, or tooth protection¹. So this list ranks on what each company will promise you in writing, not on a claim that any of them equals a dentist’s guard. Where a company publishes a thickness or a clearance number, we say so. Where it does not, we say that too.

Custom Online vs. Dentist-Fitted vs. Boil-and-Bite

A dentist-made guard costs the most because you pay for the exam, the impression, and in-office adjustments. Online labs cut the visit and charge roughly $130 to $220 for a single-arch guard from a similar lab process. Boil-and-bite guards cost the least but fit the worst.

The tradeoff between dentist-made and online custom guards is real but often small. A dentist adjusts both how the guard fits over your teeth and how your bite meets against it. An online guard can work well if your bite needs no adjustment. An unbalanced bite on a guard can cause jaw pain even if it seats perfectly⁹. Every lab on this list will remake or adjust a guard that does not seat.

One practical hedge: order online, then bring the guard to your next cleaning and ask your dentist to check the fit. Most labs will adjust or remake it inside the guarantee window if your dentist finds a problem.

The American Dental Association’s position is that direct-to-consumer dental products remove the dentist from diagnosis and treatment planning, and that unsupervised care can cause harm¹⁰. The same debate applies to online retainers, which use the same impression kits. That matters most for people whose grinding has a cause a guard will not fix. If you have not seen a dentist about your grinding, book that visit even if you order a guard online first.

Hard or Soft: Choosing a Night Guard Material

Hard acrylic guards resist wear best, soft guards feel most comfortable, and hybrid guards put a soft liner inside a hard shell. A 2023 systematic review found PMMA acrylic had the highest hardness, wear resistance, and fracture toughness among splint materials tested¹¹. Most of that evidence comes from lab testing rather than patient outcomes. A 2024 trial found a mixed hard-soft splint wore measurably more than a rigid one after six months, with similar symptom relief¹².

Thickness matters less than the old version of this page claimed. A 72-patient study found 2 mm and 4 mm splints both improved jaw symptoms¹³. No study establishes that a 3 to 4 mm guard protects teeth better than a thinner one for ordinary grinding. Pick by comfort and durability, and let your grinding intensity decide: hard or hybrid if you wear through guards, soft if you mostly clench.

“BPA-free” is a narrow claim. It rules out one chemical family and says nothing about the rest of the material. The FDA evaluates the finished device, including its materials and manufacturing, rather than approving individual ingredients⁵. Treat “BPA-free” and “premium materials” as marketing, and judge a company on the specs and guarantee it puts in writing.

What a Night Guard Can and Cannot Do

A night guard’s proven job is to put a barrier between your upper and lower teeth so grinding wears the guard instead of your enamel¹⁴. It does not stop the grinding itself. Most people still clench and grind with a guard in; they just stop doing damage.

Relief from jaw pain, headaches, or poor sleep is a possible bonus, not a promise. A 2024 Cochrane review of 57 trials rated the evidence for splints and jaw-joint pain very low certainty¹⁵. A hard stabilization splint showed a possible benefit for chewing-muscle pain. A separate review found no clear evidence that splints treat bruxism itself¹⁶.

Several companies on this list, including SmileSet, advertise better sleep and less jaw pain. Read those lines as hopes, not results.

See a Dentist or Doctor First If

Some symptoms mean a night guard is the wrong first step, or at least not the only one. Talk to a dentist or doctor before ordering online if any of these apply:

• You snore heavily or someone has seen you stop breathing in your sleep. A standard night guard is not a sleep apnea device. In a small trial, a stabilization splint raised the apnea-hypopnea index in patients with untreated sleep apnea². Sleep apnea appliances are prescribed and adjusted by a physician or trained dentist¹⁷.
• Your jaw clicks, locks, or hurts most days. Grinding with a jaw-joint problem sometimes calls for a differently designed splint, which means an exam, not a mail-order kit.
• You have a cracked tooth, a loose tooth, or gum disease. A guard over an unstable tooth can move it or trap infection.
• You wear a bonded retainer or have crowns and implants in progress. Impressions and fit get complicated, and the lab needs to know.
• A child or teen is the one grinding. Kids’ teeth are still moving, and a guard should be fitted and monitored by their dentist.

If none of these apply and you have had a dental exam in the past year, an online custom guard is a reasonable next step.

How to Take a Good Impression at Home

A bad impression is the most common reason an online guard fails, and every lab here will send a new kit if the first mold is unusable. The kit is the same putty-and-tray system online retainer companies use. Read the instructions before you open the putty, because the working time is short. Brush and floss first, then dry your teeth with a tissue.

Mix the two putties fast and evenly until the color is uniform, press the roll into the tray, and seat the tray straight down over your teeth. Push firmly, hold still for the full set time, and do not rock the tray or bite through to the plastic. Pull it out in one motion and check that every tooth shows a clean edge, including the back molars. If a tooth looks smeared or the tray is showing through, use the spare putty and redo it.

Photograph the finished impression before you mail it. If the lab rejects the mold, the photo helps them tell you what went wrong, and it speeds up the replacement kit.

Frequently Asked Questions

A custom night guard from an online lab costs $130 to $220, a dentist-made guard costs more, and neither one stops you grinding. These are the questions readers ask most.

Why are dentist night guards so expensive?

You pay for the exam, the professional impression, the lab fee, and a fitting visit, and fees vary by office and region. Online labs charge for the lab work alone and have you take the impression at home. That is where the savings come from, and it is also why the impression step matters so much.

Hard or soft night guard?

Hard or hybrid if you grind hard enough to wear through guards. A soft guard if you have sensitive teeth, though soft materials can sometimes trigger you to clench more. Hard acrylic lasts longest in lab testing, and a mixed hard-soft splint wore more than a rigid one in a 2024 trial^11,12. If you have never worn one, a hybrid is the usual middle ground.

Can a night guard stop teeth grinding?

No. A guard protects your teeth from the grinding; it does not stop the habit¹⁴. If you want to grind less, ask your dentist about stress, sleep, and medication causes.

Top or bottom night guard?

Most people find an upper guard easier to keep in and less in the way of the tongue. A lower guard suits people with a strong gag reflex. JS Dental Lab captures both arches whichever you choose, and SmileSet and Remi sell both arches together if you want a matched pair.

How long does a custom night guard last?

It depends on the material and how hard you grind. Wear studies show big differences between materials and manufacturing methods, and no fixed replacement interval is evidence-based¹⁸. Replace a guard when it cracks, thins, or no longer seats snugly, not on a calendar.

Companies that sell a six-month subscription are selling convenience, not a medical schedule. Daily brushing and a weekly soak, the same routine you’d use to clean a retainer, keep a guard usable longer.

Which guard should I pick?

Choose SmileSet if you want a $149 or $199 custom guard, especially if SmileSet or SmileDirectClub already has your file. Choose JS Dental Lab if you grind hard and want a choice of material and thickness with a year to change your mind. Choose Pro Teeth Guard if a free replacement inside a year matters most.

Pick Sporting Smiles if price is your only concern, and Remi if you want a top and bottom set on a subscription. Keep a boil-and-bite guard only as a stopgap.