title: Is the F.R. the answer? (functional regulator).
mesh_terms: D000202:Activator Appliances; D000293:Adolescent; D002648:Child; D006801:Humans; D008310:Malocclusion / Q000209:etiology / Q000628:therapy; D009968:Orthodontic Appliances, Removable; D014078:Tooth Eruption