title: Sagittal, vertical and transversal dimensions of the maxillary complex in patients with ectopic maxillary canines.
abstract: OBJECTIVE
  To analyse the craniofacial maxillary complex in cases with labially and palatally located ectopic canines, subgrouped accordingly: Group I: no deviations in the dentition; Group IIa: deviations in the maxillary incisors only; Group IIb: deviations in the dentition in general.
  
  
  METHODS
  Sixty nine patients (mean age 13 years 6 months) with palatally or labially located ectopic canines.
  
  
  METHODS
  Profile radiographs and dental casts were analysed. The patients were subgrouped according to a previous registration of dental deviations registered radiographically. Maxillary cross-arch transversal width was analysed on dental casts. Sagittal and vertical dimensions were registered cephalometrically on profile radiographs.
  
  
  RESULTS
  In the patient sample the maxillary cross-arch transversal width (from first maxillary molar left to first maxillary molar right), was significantly larger than the normal mean (0.65 mm, 95% Cl: 0.02-1.28, p = 0.043). The sagittal length N-S was significantly shorter (-0.97, 95% Cl:-1.72-(-)0.22, p = 0.002). The vertical length ANS-N length was also significantly shorter (-0.79, 95% Cl:-1.65-(-)0.02, p = 0.047). The remaining variables were non-significant. Tests for interaction between groups (I, IIa and IIb) and palatal/labial ectopic location did not demonstrate significance.
  
  
  CONCLUSIONS
  In patients with ectopic maxillary canines, the maxillary complex is shorter sagittally as well as vertically, while it is wider transversally.
authors.affiliation: Municipal Dental Service of Aarhus, Aarhus, Denmark.
authors.forename: H J
authors.initials: HJ
authors.lastname: Larsen
authors.forename: H B
authors.initials: HB
authors.lastname: Sørensen
authors.forename: L
authors.initials: L
authors.lastname: Artmann
authors.forename: I J
authors.initials: IJ
authors.lastname: Christensen
authors.forename: I
authors.initials: I
authors.lastname: Kjaer
mesh_terms: D002508:Cephalometry; D003481:Cuspid / Q000002:abnormalities*; D006801:Humans; D016014:Linear Models; D008437:Maxilla / Q000473:pathology*; D008445:Maxillofacial Development; D009811:Odontometry; D011378:Prognathism; D014079:Tooth Eruption, Ectopic / Q000473:pathology*; D014716:Vertical Dimension