title: The Dimensions of Expansion: report of the 2007 NZAO Symposium.
abstract: The biennial symposium of the Education, Research and Development Group (ERDG) of the New ZealandAssociation of Orthodontists (NZAO) was held in Queenstown on August 17 and 18, 2007. Following a well-tested format, the symposium considered the effects of expansion of the dental arches in the three planes of space and over time, a timely but difficult topic given the current fashion to avoid the extraction of teeth to correct dental crowding. The findings reported here represent the consensus reached by delegates attending the symposium.
authors.affiliation: david.healey@otago.ac.nz
authors.forename: D L
authors.initials: DL
authors.lastname: Healey
authors.forename: M R
authors.initials: MR
authors.lastname: Kean
authors.forename: S G
authors.initials: SG
authors.lastname: Dearing
mesh_terms: D000328:Adult; D002648:Child; D003766:Dental Occlusion; D018865:Dental Research; D006801:Humans; D008437:Maxilla / Q000601:surgery; D008445:Maxillofacial Development; D009520:New Zealand; D009970:Orthodontics / Q000193:education / Q000458:organization & administration / Q000639:trends*; D009971:Orthodontics, Corrective; D010155:Palatal Expansion Technique; D012307:Risk Factors; D012690:Serial Extraction; D013997:Time Factors