After your teeth have been shifted by braces or aligners by your dentist, they will craft you a retainer. These are plastic oral devices that fit snugly over your teeth. Once you receive a retainer, it is crucial to wear it as much as possible. You should be wearing it every night while you sleep. That’s about eight hours every 24 hours that your retainer is in your mouth. That’s a lot of time in your mouth, so how often should you replace you
