Upper vs. Lower Night Guard: Which Should You Choose?

A custom night guard can be made for either the upper or lower teeth. Neither arch is universally better—the right choice often depends on comfort, dental work, tongue space, gag sensitivity and what you are most likely to wear consistently.

Did You Mess Up Your Dental Impression? Good vs. Bad Examples

What if you mess up your dental impression? Don’t panic — it happens more often than you think. At Sentinel Mouthguards, every impression is reviewed by our lab, and if something’s off, we’ll send you a complimentary redo kit. In this guide, we’ll explain the most common mistakes, how to fix them, and how to ensure your night guard fits perfectly from the start.

How Long Do Dental Night Guards Last? Lifespan by Type & Care Tips

Wondering how long a night guard really lasts? The answer depends on the type, thickness, and how well it’s cared for. From soft guards that last months to hard copolyester guards that can last years, here’s what to expect — plus tips to extend your night guard’s lifespan.

Should I Choose a Thin or Thicker Mouth Guard?

Choosing the right mouth guard thickness impacts comfort, protection, and durability. Learn when to choose 2mm vs 3mm and how to select the best option for night grinding, daytime clenching, or sports use.

Does a Dental Night Guard Stop Teeth Grinding? The Honest Answer

A dental night guard may not stop the underlying habit of teeth grinding, but it can protect your enamel, dental work and smile from lasting damage. Learn how night guards work, what they can and cannot do, and how to choose the right material for your grinding severity.

How Much Does a Night Guard Cost? Dentist, Custom & OTC Prices

Night guard prices vary widely depending on fit, materials and where the appliance is made. Compare OTC, direct-to-consumer custom and dentist-provided options, plus current Sentinel pricing

Best Mouth Guard for MMA: Fit, Protection & What Fighters Should Look For

The best MMA mouth guard balances impact protection with a secure, comfortable fit. Learn what fighters should look for, how custom and boil-and-bite guards compare, and why retention, thickness and wearability all matter.

What Age Can a Child Wear a Dental Night Guard?

What Is a Gum Shield? Mouth Guard Types, Uses & How to Choose

A gum shield is another name for a sports mouth guard—but it isn’t the same as every dental guard. Learn what gum shields do, how stock, boil-and-bite and custom options compare, and what to look for in a secure, comfortable fit.