 The treatment of craniomandibular disorders is a challenging task. Many different treatments are yet available with occlusal splints being one of the most commonly used. A relative new diagnostic and treatment alternative is the Grindcare device. This enables the electromyographic EMG assessment of the activity of the temporal muscle and the contigent electrical stimulation of this muscle as bio-feedback whenever the EMG activity exceeds a certain limit. This stimulation results to a sudden break of the muscle activity. 