title: Crowding: timing of treatment.
abstract: The late mixed dentition stage of development, after the eruption of the first premolars, is a favorable time to start treatment to resolve crowding. This protocol offers the clinician choices. If nonextraction treatment is preferable, arch length preservation can provide the space for alignment in approximately 75% of all patients with crowding. If extraction treatment is indicated, the first premolars are available.
authors.affiliation: Boston University, Goldman School of Graduate Dentistry, Department of Orthodontics, Mass 02118-2392.
authors.forename: A A
authors.initials: AA
authors.lastname: Gianelly
mesh_terms: D001641:Bicuspid / Q000502:physiology / Q000601:surgery; D003724:Dental Arch / Q000473:pathology; D003818:Dentition, Mixed; D006801:Humans; D007180:Incisor / Q000473:pathology*; D008310:Malocclusion / Q000628:therapy*; D008334:Mandible / Q000473:pathology; D009971:Orthodontics, Corrective; D012690:Serial Extraction; D013997:Time Factors; D014078:Tooth Eruption / Q000502:physiology