title: An electromyographic investigation of the perioral musculature in Class II division 1 malocclusion.
mesh_terms: D003679:Deglutition; D004576:Electromyography; D006801:Humans; D007180:Incisor; D008046:Lip / Q000502:physiology; D008310:Malocclusion; D008410:Masticatory Muscles / Q000502:physiology*; D009971:Orthodontics, Corrective