Abstract: The disclosure concerns orthotic devices and related methods for treating complications of the masticatory neuromusculature, including, for example, temporomandibular disorder (TMD). In one aspect, the disclosure concerns an orthotic device for treating complications of the neuromusculature. In another aspect, the disclosure concerns a method for treating a patient experiencing complications of the neuromusculature. In yet another aspect, the disclosure concerns a method for: (i) finding a superior compressed position (SCP) of the jaw-joint, or a SCP range, wherein the neuromusculature is relaxed with the jaw-joint placed in the SCP range at least during occlusion, and (ii) designing one or more dental orthotic devices being configured to maintain the jaw within the SCP range during occlusion.