title: Rhinometric evaluation of nasal cavity geometry and its relation to the upper arch transverse distance.
abstract: The objective of this study was to evaluate children's respiratory patterns in the mixed dentition, by means of acoustic rhinometry, and its relation to the upper arch width development. Fifty patients were examined, 25 females and 25 males with mean age of eight years and seven months. All of them were submitted to acoustic rhinometry and upper and lower arch impressions to obtain plaster models. The upper arch analysis was accomplished by measuring the interdental transverse distance of the upper teeth, deciduous canines (measurement 1), deciduous first molars (measurement 2), deciduous second molars (measurement 3) and the first molars (measurement 4). The results showed that an increased left nasal cavity area in females means an increased interdental distance of the deciduous first molars and deciduous second molars and an increased interdental distance of the deciduous canines, deciduous first and second molars in males. It was concluded that there is a correlation between the nasal cavity area and the upper arch transverse distance in the anterior and mid maxillary regions for both genders.
authors.affiliation: Department of Orthodontics, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil. jbpaiva@usp.br
authors.forename: João Batista
authors.initials: JB
authors.lastname: Paiva
authors.forename: Adriana Silva
authors.initials: AS
authors.lastname: Alves
authors.forename: Annelise Nazareth Cunha
authors.initials: AN
authors.lastname: Ribeiro
authors.forename: José
authors.initials: J
authors.lastname: Rino Neto
authors.forename: Solange Mongeli de
authors.initials: SM
authors.lastname: Fantini
mesh_terms: D002648:Child; D003481:Cuspid / Q000033:anatomy & histology; D003724:Dental Arch / Q000033:anatomy & histology* / Q000254:growth & development; D003818:Dentition, Mixed; D005260:Female; D006801:Humans; D008297:Male; D008445:Maxillofacial Development; D003765:Models, Dental; D008963:Molar / Q000033:anatomy & histology; D009296:Nasal Cavity / Q000033:anatomy & histology*; D009970:Orthodontics; D012119:Respiration; D023842:Rhinometry, Acoustic; D012737:Sex Factors