Splints are removable dental appliances, of various designs, carefully moulded to fit the upper or lower arches of teeth. They are used to protect and stabalise occlusion and aid in relieving jaw/joint dysfunction - also known as temporomandibular joint pain dysfunction syndrome (TMJPDS). People prone to nocturnal bruxism, or night-time clenching, may also utilise splints.

Splints prevent the top and bottom teeth coming into contact with one another, hence, allowing the muscles in the face and jaw to relax.