title: Dental arch parameters of the displacement and nondisplacement sides in subjects with unilateral palatal canine ectopia.
abstract: OBJECTIVE
  To compare arch perimeter and teeth size, number, and shape between the two sides of the dental arch-the canine displacement side (DS) and the nondisplacement side (NDS)-in subjects with unilateral palatally displaced canine (PDC).
  
  
  METHODS
  Orthopantomograms (OPTs) of 240 subjects with unilateral PDC and 240 OPT matching controls were used. Additionally, study casts of 100 study subjects and 100 controls were used. The age of subjects ranged between 14 and 25 years. Dental casts were digitized and several parameters were recorded.
  
  
  RESULTS
  The transverse width from midpalatal line to the buccal segment and the palatal area on the DS was larger than that in the NDS (P < .05 to .001), with no difference in tooth size between both sides. Maxillary second premolars, canines, and lateral incisors in the PDC group were smaller than those in control group. Peg-shaped lateral incisors were significantly more frequent in the study group (P < .001).
  
  
  CONCLUSIONS
  The transverse width of the DS was larger than that of the NDS. Both sides were generally smaller than those of the control group. Tooth size in the DS was comparable to that in the NDS but smaller than those of the control group. A missing or peg-shaped lateral incisor was the most common reported anomaly.
authors.affiliation: Department of Preventive Dentistry, Faculty of Dentistry, Jordan University of Science and Technology, Irbid-Jordan. susank@just.edu.jo
authors.forename: Susan
authors.initials: S
authors.lastname: Al-Khateeb
authors.forename: Elham S
authors.initials: ES
authors.lastname: Abu Alhaija
authors.forename: Ashwaq
authors.initials: A
authors.lastname: Rwaite
authors.forename: Bader Alddin
authors.initials: BA
authors.lastname: Burqan
mesh_terms: D000293:Adolescent; D000328:Adult; D016009:Chi-Square Distribution; D003481:Cuspid / Q000473:pathology*; D003724:Dental Arch / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla; D009811:Odontometry; D014070:Tooth / Q000473:pathology; D014079:Tooth Eruption, Ectopic / Q000473:pathology*; D055815:Young Adult