The word “splint” implies a mouth guard, bite plate, or other sort of oral appliance that a dentist has recommended in the context of splint therapy for TMJ disease. These splints come in both hard and soft varieties, and they can be used to cover some or all of the teeth. Splints are normally formed from an imprint of your teeth and manufactured in a dental lab from strong acrylic resin. The dentist will adjust and reposition the splint when it is created. You will be required to wear the splint as directed (during the day, only at night, or both), as well as to attend any necessary follow-up sessions to assess how the symptoms are improving and have the splint modified as needed. How to take care of the splint properly will be suggested by your dentist.