title: Increasing maxillary arch length with a modified Herbst appliance.
authors.forename: J R
authors.initials: JR
authors.lastname: Valant
mesh_terms: D000202:Activator Appliances; D002648:Child; D003724:Dental Arch / Q000473:pathology; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000628:therapy*; D008312:Malocclusion, Angle Class II / Q000628:therapy*; D009968:Orthodontic Appliances, Removable; D009972:Orthodontics, Interceptive / Q000379:methods*; D014081:Tooth Extraction