Thinnest Night Guards
If you hate sleeping with a bulky piece of plastic in your mouth, finding the thinnest night guard is essential for compliance. Using digital calipers, we measured the precise millimeter thickness of the leading guards—and tested them to ensure they won't crack under heavy grinding pressure despite their slim profile.
Hard Night Guard (Heavy Grinding)
✓ Wear-tested 30 nights with digital calipers — see our testing protocol
| Spec | Measured |
|---|---|
| Fabrication | lab-custom |
| Material | Elasticized Acrylic |
| Price (RRP) | $190 |
| Thickness (initial) | 1.55 mm |
| Durometer (Shore A) | N/A |
| Nights Tested | 30 nights |
| Thickness Loss | 3.2% |
| Fit Retention | held |
| Moldability Score | N/A (lab-custom) |
| Bite-Through Observed | No ✓ |
✅ Pros
- Incredibly thin and comfortable
- Minimal wear under heavy grinding
- Professional lab-made fit
❌ Cons
- High upfront cost
- Requires taking your own impressions
NightGuard Advanced Comfort
✓ Wear-tested 30 nights with digital calipers — see our testing protocol
| Spec | Measured |
|---|---|
| Fabrication | boil-and-bite |
| Material | Dual-layer thermoplastic |
| Price (RRP) | $39.9 |
| Thickness (initial) | 2.20 mm |
| Durometer (Shore A) | 88 |
| Nights Tested | 30 nights |
| Thickness Loss | 4.5% |
| Fit Retention | held |
| Moldability Score | 4/5 |
| Bite-Through Observed | No ✓ |
✅ Pros
- Excellent durability (only 4.5% loss)
- Thinner profile than competitors
- Good value for money
❌ Cons
- Takes some effort to get the perfect fit
Frequently Asked Questions
What is the thinnest custom night guard?
The Pro Teeth Guard Hard Acrylic measured 1.55mm in our tests — the thinnest custom guard we found, and it still only lost 3.2% of its thickness after 30 nights of heavy grinding. That's exceptional for such a thin profile.
Can a thin night guard still protect your teeth?
Yes. Hardness matters more than thickness for protection. The Pro Teeth Guard's hard acrylic material at 1.55mm outperforms bulkier stock OTC guards (2.50–2.80mm) despite being far thinner. Thin hard acrylic distributes force better than thick soft EVA.