title: Some effects of activator treatment on the mandible and the midface.
mesh_terms: D000202:Activator Appliances; D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible / Q000254:growth & development*; D008445:Maxillofacial Development; D009968:Orthodontic Appliances, Removable