title: Spontaneous changes in the mandibular arch following first premolar extractions.
mesh_terms: D000293:Adolescent; D001641:Bicuspid / Q000601:surgery*; D002508:Cephalometry; D002648:Child; D003201:Computers; D003724:Dental Arch / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000628:therapy; D012690:Serial Extraction; D014070:Tooth / Q000033:anatomy & histology; D014085:Tooth Migration / Q000209:etiology*