[Two cases of anterior crossbite using Frankel functional regulator (FR3)].
D000202:Activator Appliances; D002648:Child; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000628:therapy*; D008313:Malocclusion, Angle Class III / Q000628:therapy*; D008445:Maxillofacial Development; D009968:Orthodontic Appliances, Removable