摘要
Objective To improve the lunctional occiusion afer orthognathic operation, the contractiiities of masseter, temporalis and digastric muscles were studied before and after surgery. Methods By means of integrated electromyogram (EMG), bioelectric potentials and EMG activities of these 3 muscles were recorded. ResuIts Signilicant decreases in bioelectric potentials and EMG activities belore and after surgery were observed in working muscles. No doflerence was noted in resting muscles. ConcIusion Postoperative malocclusion necessitates postoperative orthodontic treatment.
Objective To improve the lunctional occiusion afer orthognathic operation, the contractiiities of masseter, temporalis and digastric muscles were studied before and after surgery. Methods By means of integrated electromyogram (EMG), bioelectric potentials and EMG activities of these 3 muscles were recorded. ResuIts Signilicant decreases in bioelectric potentials and EMG activities belore and after surgery were observed in working muscles. No doflerence was noted in resting muscles. ConcIusion Postoperative malocclusion necessitates postoperative orthodontic treatment.
