title: Role of buccal corridor in smile esthetics and its correlation with underlying skeletal and dental structures.
abstract: OBJECTIVE
  This study was designed to evaluate the buccal corridor in smile esthetics and to correlate it with underlying hard tissues.
  
  
  METHODS
  Posed smiling frontal photographs, digital posterior-anterior (PA) cephalograms, and study models of 25 males and 25 females in age range of 18-25 years were taken. Photographs were evaluated for smile esthetics by eight orthodontists, eight plastic surgeons, eight beauticians and eight lay people to group them into three groups with least attractive, average and attractive smile and buccal corridor width was measured. Digital PA cephalograms were transferred on Nemo-tech software for frontal facial analysis. Intercanine and intermolar widths were measured on upper study model with the help of a digital calliper.
  
  
  RESULTS
  The buccal corridor width was least in attractive smile group and maximum in least attractive smile group. The buccal corridor width had a negligible correlation with hard tissues and a mild to moderate inverse correlation with intercanine and intermolar widths within the groups.
  
  
  CONCLUSIONS
  As the amount of buccal corridor display was increased, smiling images were scored less attractive by the evaluators. The buccal corridor is not influenced by underlying skeletal hard tissues but have mild to moderate inverse correlation with the intercanine and intermolar width.
authors.affiliation: Department of Orthodontics and Dentofacial orthopaedics, Uttar Pradesh Dental College and Research Centre, Lucknow, India.
authors.forename: Tripti
authors.initials: T
authors.lastname: Tikku
authors.forename: Rohit
authors.initials: R
authors.lastname: Khanna
authors.forename: R P
authors.initials: RP
authors.lastname: Maurya
authors.forename: Nabeel
authors.initials: N
authors.lastname: Ahmad
mesh_terms: D000293:Adolescent; D000328:Adult; D059925:Anatomic Landmarks / Q000033:anatomy & histology; D001290:Attitude; D001291:Attitude of Health Personnel; D001505:Beauty Culture; D002508:Cephalometry / Q000379:methods; D002610:Cheek / Q000033:anatomy & histology*; D002680:Chin / Q000033:anatomy & histology; D003481:Cuspid / Q000033:anatomy & histology; D003724:Dental Arch / Q000033:anatomy & histology; D004955:Esthetics, Dental; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008046:Lip / Q000033:anatomy & histology*; D008297:Male; D008334:Mandible / Q000033:anatomy & histology; D008437:Maxilla / Q000033:anatomy & histology; D003765:Models, Dental; D008963:Molar / Q000033:anatomy & histology; D009970:Orthodontics; D010781:Photography; D019252:Radiography, Dental, Digital / Q000379:methods; D012904:Smiling; D013518:Surgery, Plastic; D055815:Young Adult; D015050:Zygoma / Q000033:anatomy & histology