Clenching your jaw at night can ruin even the best smile. To stop Bruxism (teeth grinding), some people wear a nightguard, while others rely on their retainer. But which device works best? Spoiler: only one of them protects your teeth from grinding. The other keeps your teeth straight! Nightguards and retainers both go in your mouth but differ in purpose, design and when you need them. Confusing one for the other can lead to wasted money or, worse, damaged teeth. We’ll teach you the diff...

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