The Sentinel Promise: Perfect fit or we remake it free.
Retainers don’t last forever — they can crack, loosen, get chewed up by pets, or simply wear out over time. If you’ve lost or damaged yours, you’re not alone. Replacement retainers are a normal (and essential) part of post-orthodontic care. In this guide, we’ll cover when and why retainers need to be replaced, the signs it’s time for a new one, and how Sentinel makes reordering fast, affordable, and hassle-free with custom retainers made right here in the U.S.
A sports mouth guard and a night guard may look similar, but they’re designed for very different forces. We explain the differences from a dental-lab perspective, why contact guards aren’t ideal substitutes for night guards, and the important exception for no-contact activities like weightlifting.
Retainers keep teeth straight. Night guards protect against grinding. They look similar, but the jobs they do are completely different. Here’s how to know which one you need—and why using the right appliance matters for your smile and your comfort.
Bruxism can leave subtle clues long before serious damage becomes obvious. Learn how grinding and clenching may affect your teeth, jaw muscles, dental work and sleep—and which warning signs deserve professional attention.
