A method of custom fitting a bite regulator includes providing a self-impression kit with one or more bite registration tools, a bite regulator with an impression material on surfaces of the bite regulator, and instructions. The instructions one to a) determine a natural bite position of a subject utilizing the bite registration tool; b) apply heat to the bite regulator to soften the impression material; c) position the bite regulator over the upper or lower teeth of the subject; d) insert the bite registration tool in the subject's mouth; and e) form an impression of a portion of the subject's teeth in the softened impression material while the bite registration tool assists the subject in maintaining the previously determined natural bite position.