Twenty years of functional appliances.
D000202:Activator Appliances; D000293:Adolescent; D000328:Adult; D002648:Child; D005145:Face / Q000033:anatomy & histology; D005260:Female; D006801:Humans; D007574:Jaw Relation Record; D008297:Male; D008310:Malocclusion / Q000628:therapy; D008445:Maxillofacial Development; D009968:Orthodontic Appliances, Removable; D063173:Retrognathia / Q000628:therapy