
Night guard is device made by your dentist and has to use during night while you sleeping.
- Nightguards may be used as splints to reduce strain over the temporomandibular joint in temporomandibular joint disorder
- To prevent tooth attrition in bruxism[medical citation needed

A sportsguard is a protective device for the mouth that covers the teeth and gums to prevent and reduce injury to the teeth, arches, lips and gums. A sports guard is most often used to prevent injury in contact sports, as a treatment for bruxism or TMD, or as part of certain dental procedures, such as tooth bleaching. Depending on application, it may also be called a mouth protector, mouth piece, gumshield, gumguard.
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