title: Posterior tooth angulations in patients with anterior open bite and normal occlusion.
abstract: BACKGROUND
  The aim of this study was to compare the posterior tooth angulations in patients with open-bite malocclusion and normal occlusion.
  
  
  METHODS
  Lateral cephalometric headfilms of 45 untreated open-bite subjects were compared with the lateral headfilms of 45 subjects with normal occlusion in the permanent dentition. The groups were matched for age and sex distribution and compared with t tests.
  
  
  RESULTS
  The maxillary and mandibular premolars were more mesially angulated in relation to the bisected occlusal plane, and the first and second molars were significantly more distally angulated in the open-bite group in relation to the palatal and mandibular planes.
  
  
  CONCLUSIONS
  The maxillary and mandibular premolars were more mesially angulated in relation to the bisected occlusal plane and therefore do not compensate for the divergence of the palatal and mandibular planes as the molars do.
authors.affiliation: Professor and head, Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil. Electronic address: jansong@travelnet.com.br.
authors.forename: Guilherme
authors.initials: G
authors.lastname: Janson
authors.affiliation: Postgraduate student, Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil.
authors.forename: Vinicius
authors.initials: V
authors.lastname: Laranjeira
authors.affiliation: Postgraduate student, Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil.
authors.forename: Mayara
authors.initials: M
authors.lastname: Rizzo
authors.affiliation: Associate professor, Department of Orthodontics, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil.
authors.forename: Daniela
authors.initials: D
authors.lastname: Garib
mesh_terms: D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D009811:Odontometry; D024343:Open Bite / Q000473:pathology*; D055815:Young Adult