An intraoral device and method of use for treating conditions of Temporomandibular joint dysfunction (TMD) and Occlusal Muscle Disorder (OMD). A shell is provided including a channel formed with an opening towards a top surface, the channel containing dental impression material enabled to accept a plurality of maxillary anterior teeth of a user. Placing the channel of the intraoral device over maxillary anterior teeth of a user enabling the dental impression material to surround said teeth, cooling the dental impression material forming a mold. A smooth, rigid plane formed on the bottom surface enabled to make contact with mandibular anterior teeth of the user, wherein with the intraoral device in place on the maxillary anterior teeth, the mandibular anterior teeth make contact with the smooth rigid plane and simultaneously translate freely on the smooth rigid plane.
