A night guard is also referred to as an occlusal orthotic or splint. Night guards are made of hard plastic acrylic and are custom fit to each individual patient. These devices designed to protect the teeth and the TMJ during sleep - when teeth grinding is uncontrollable. Some patients with multiple dental restorations such as porcelain crowns and veneers, wear a night guard for additional protection against porcelain fractures during sleep. Patients with multiple dental implant restorations are encouraged to wear an occlusal splint. Occlusal splints can also be used to treat dental emergencies of the temporomandibular joint (TMJ). These night guards can provide significant relief of facial pain and migraine headaches when properly fabricated and adjusted to balance the biting forces and TMJ alignment.