Comparison of muscle activity between conventional and neuromuscular splints.
The muscle relaxation appliance (MRA) has been used in the treatment of myofascial pain dysfunction (MPD) patients. The neuromuscular orthotic is a version of the MRA and is constructed from a three-dimensional mandibular position when muscles are in a state of minimal electromyographic (EMG) activity. The purpose of this study was to investigate the affect of two muscle relaxation appliances and a placebo (cotton rolls) on EMG activity of the functional masseter and anterior temporalis muscles. A centric relation mandibular MRA and a neuromuscular orthotic were constructed under controlled protocols for 12 women MPD patients with a mean age of 38 years. EMG measurements were taken during a 10-second clench of both appliance and placebo. No statistical difference was found between the centric relation mandibular MRA and neuromuscular orthotic. A statistically significant difference was found between the mean EMG values of the placebo and two treatment appliances.
Carlson
N
N
Division of Family Dentistry, University of Iowa Hospital and Clinics, College of Dentistry.
Moline
D
D
Huber
L
L
Jacobson
J
J
D000328:Adult; D016302:Centric Relation; D004311:Double-Blind Method; D004576:Electromyography; D004867:Equipment Design; D005260:Female; D006801:Humans; D007574:Jaw Relation Record; D008406:Masseter Muscle / Q000503:physiopathology*; D009119:Muscle Contraction / Q000502:physiology; D009126:Muscle Relaxation / Q000502:physiology*; D009469:Neuromuscular Junction / Q000503:physiopathology; D017090:Occlusal Splints; D010919:Placebos; D013703:Temporal Muscle / Q000503:physiopathology*; D013705:Temporomandibular Joint Disorders / Q000503:physiopathology / Q000628:therapy*
D010919:Placebos