Inclusion Criteria:  diagnosed functional disorders of the masticatory system with the accompanying excessive tension of the masseter muscles, no clinical signs of displacement of the disc with a blockage in the temporomandibular joint, spontaneous pain in the masticatory muscles, lasting at least one month before treatment, good general health of the patient, full dental arches written consent to participate in the study  Exclusion Criteria:  occurrence of a face or head injury during participation in the research project, open wounds in the area where the therapy was carried out, sudden illness of the patient preventing participation in the study, the will to terminate participation in the study