A night guard should fit snugly and comfortably—but what if it doesn’t? Whether it’s too tight, too loose, or just feels "off," an ill-fitting night guard can cause pain, slipping, or even worsen grinding.
This guide covers common fit problems and solutions, so you can protect your teeth without discomfort.
✅ Possible Causes:
New custom guard needs breaking in
Teeth may be shifting (e.g., after dental work)
Improper molding (boil-and-bite guards)
🛠 How to Fix It:
✔ Wear it for short periods first (1-2 hours/day) to adjust.
✔ Rinse with warm water before inserting to soften slightly.
✔ Check for pressure points—gently sand rough edges with a nail file (if DIY guard).
✔ See your dentist if pain persists—they can adjust the guard.
✅ Possible Causes:
Loose fit (common with OTC or worn-out guards)
Dry mouth reducing suction
Wrong size (boil-and-bite not molded properly)
🛠 How to Fix It:
✔ Re-mold a boil-and-bite guard (reheat and bite down firmly).
✔ Try a dental adhesive (e.g., Poligrip for dentures) for temporary hold.
✔ Switch to a custom guard—better grip and long-term fit.
✅ Possible Causes:
Too thick or bulky (common with OTC guards)
Covers too much of the palate
🛠 How to Fix It:
✔ Try a thinner, custom guard (sits closer to teeth).
✔ Look for an "anterior-only" guard (covers just front teeth).
✔ Practice wearing it during the day to desensitize your gag reflex.
✅ Possible Causes:
Warped from hot water or improper storage
Teeth have shifted since guard was made
🛠 How to Fix It:
✔ Soak in warm water and re-seat it (for minor warping).
✔ Check for debris—clean thoroughly before use.
✔ Ask your dentist for a reline or replacement if your bite has changed.
Even well-fitted guards wear out. Time to replace if:
🔹 Visible cracks, thinning, or holes
🔹 Persistent odor/taste (bacteria buildup)
🔹 Loose fit after years of use
🔹 New dental work (fillings, crowns) altering your bite
💡 Custom guards last 2-5 years; OTC guards last 6-12 months.
✔ Store properly—keep in a ventilated case (not in hot cars or sunlight).
✔ Clean daily—brush with mild soap and rinse.
✔ Avoid DIY adjustments—don’t trim or sand custom guards without professional help.
If adjustments don’t help:
See your dentist—they can modify or remake your guard.
Try a different type—a slim custom guard (like New Smile Life’s) may solve the issue.
Q: Can I soften my night guard if it’s too stiff?
A: No—heating can warp it. Instead, ask your dentist for a softer material.
Q: Why does my guard fit differently some nights?
A: Swelling, dehydration, or sinus issues can slightly change jaw alignment temporarily.
Q: Can I adjust a custom night guard myself?
A: Not recommended—DIY fixes may ruin it. Dentists have tools for precise adjustments.
For a better-fitting guard, explore New Smile Life’s options.
