You brush your teeth, floss regularly and faithfully wear your retainer every night. But despite your diligent oral health habits, your retainer or mouth guard can get yellowed, cloudy or stained.

Plenty of people have unpleasant memories of having to fish them out of the middle-school cafeteria trash can, but it turns out mouth retainers may be even grosser than you thought. A new study finds ...

Natasha Caleel Freutel is a health and fitness writer, personal trainer and licensed occupational therapist. She obtained her bachelor's degree in kinesiology and master’s degree in occupational ...