Electromyographic biofeedback and rest position training of masticatory muscles in myofascial pain-dysfunction patients.
Twenty-four women outpatients with myofascial pain-dysfunction were divided into three groups of eight. All received bilateral masseter electromyographic biofeedback training. One group received biofeedback only; one group received additional instructions and modeling to place their jaw in the "rest" position; and one group was given a prosthetic guide that spaced the incisors 6.8 mm apart. Two 15-minute training sessions were conducted at a 1-week interval, with posttreatment assessment 2 weeks later. The instruction and prosthesis groups obtained significantly greater electromyographic reductions in masseter activity and increases in mandibular range of motion compared with the biofeedback-only group. Subjects with pain obtained a significant reduction in therapist and self-report pain ratings. The results suggest that short-term biofeedback treatment may be meaningfully augmented by procedures that place the mandible in the rest position.
Erlandson
P M
PM
New Haven Craniofacial Pain Center, Conn.
Poppen
R
R
D000328:Adult; D001676:Biofeedback, Psychology; D004576:Electromyography; D005260:Female; D006801:Humans; D008334:Mandible / Q000033:anatomy & histology / Q000502:physiology; D008410:Masticatory Muscles / Q000502:physiology*; D009068:Movement; D009119:Muscle Contraction; D010147:Pain Measurement; D011897:Random Allocation; D013165:Splints; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000628:therapy*; D014716:Vertical Dimension