title: Maxillary arch width and buccal corridor changes with orthodontic treatment. Part 2: attractiveness of the frontal facial smile in extraction and nonextraction outcomes.
abstract: BACKGROUND
  This study was designed to assess the influence that the buccal corridor might have on the frontal facial attractiveness of subjects who had received orthodontic treatment with or without 4 premolar extractions.
  
  
  METHODS
  Posttreatment full-face frontal smiling photographs of 30 premolar extraction and 27 nonextraction patients were evaluated by 20 orthodontists, 20 dentists, and 20 laypeople using a visual analog scale. The ratings were analyzed according to rater group, rater sex, and number of years in practice for orthodontists and dentists to search for any statistically significant differences in the ratings on the basis of treatment groups, subject sex, and buccal corridor widths and areas.
  
  
  RESULTS
  Orthodontists and dentists gave higher mean overall frontal facial attractiveness scores than did laypeople. There were no significant differences in how men and women rated the study subjects. The number of years in practice did not affect how the orthodontists rated, but it did affect the ratings of the dentists. Female subjects were consistently rated as significantly more attractive than male subjects. There was no difference in ratings for the extraction and nonextraction subject groups. The buccal corridor widths and areas did not affect the frontal facial attractiveness ratings.
  
  
  CONCLUSIONS
  If treatment has been carried out with thorough diagnosis and careful planning, neither the choice of extraction or nonextraction treatment, nor the resulting buccal corridor widths or areas appeared to affect the subjects' frontal facial attractiveness.
authors.affiliation: Private practice, Melbourne, Victoria, Australia;
authors.forename: Anna H
authors.initials: AH
authors.lastname: Meyer
authors.affiliation: Professor, Royal Melbourne Hospital, Melbourne, Victoria, Australia. Electronic address: mgwoods@iprimus.com.au.
authors.forename: Michael G
authors.initials: MG
authors.lastname: Woods
authors.affiliation: Professor and Elsdon Storey Chair of Child Dental Health, Melbourne Dental School, University of Melbourne, Melbourne, Victoria, Australia.
authors.forename: David J
authors.initials: DJ
authors.lastname: Manton
mesh_terms: D000293:Adolescent; D001641:Bicuspid / Q000033:anatomy & histology / Q000601:surgery; D002610:Cheek / Q000033:anatomy & histology*; D003481:Cuspid / Q000033:anatomy & histology; D003724:Dental Arch / Q000033:anatomy & histology*; D003815:Dentists; D004955:Esthetics, Dental; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D007180:Incisor / Q000033:anatomy & histology; D008297:Male; D008437:Maxilla / Q000033:anatomy & histology*; D009811:Odontometry / Q000379:methods; D009970:Orthodontics; D009971:Orthodontics, Corrective / Q000379:methods*; D010781:Photography; D011364:Professional Practice; D012189:Retrospective Studies; D012737:Sex Factors; D012904:Smiling; D013997:Time Factors; D014081:Tooth Extraction