title: Is it possible to use cross-sectional and vertical facial measurements to establish the shape of the mandibular arch?
abstract: BACKGROUND
  Given the benefits of radiographic cephalometric studies in determining patterns of dental-skeletal-facial normality in orthodontics, the aim of this study was to investigate the association between mandibular dental arch shape and cross-sectional and vertical facial measurements.
  
  
  METHODS
  It was analyzed plaster casts and teleradiographs in frontal and lateral norm belonging to 50 individuals, aged between 15 and 19 years, with no previous history of orthodontic treatment and falling into four of the six Andrews's occlusion keys. The plaster models were scanned (3D) and the images of the dental arches were classified subjectively as oval, triangular and quadrangular by three calibrated examiners, with moderate inter-examiner agreement (Kappa = 0.50). After evaluation of the method error by paired t test (p > 0.05), it was carried out the analysis of cross-sectional and vertical facial measurements to be compared to the shape of the dental arch. Data were subjected to one-way analysis of variance with a significance level of 5%.
  
  
  RESULTS
  When the VERT index was compared with the three arch shapes, no measurement showed statistically significant differences (p > 0.05): triangular (0.54); oval (0.43); and quadrangular (0.73); as well as there were no differences (p > 0.05) in the widths of the face (141.20; 141.26; 143.27); maxilla (77.27; 77.57; 78.59) and mandible (105.13; 103.96; 104.28).
  
  
  CONCLUSIONS
  It can be concluded that there was no correlation between different shapes of the mandibular dental arch and the cross-sectional and vertical facial measurements investigated.
authors.affiliation: PhD Student, Department of Oral Biology, Universidade Sagrado Coração University, Bauru, São Paulo, Brazil.
authors.forename: Ossam Abu
authors.initials: OA
authors.lastname: El Haje
authors.affiliation: PhD Student, Department of Oral Biology, Universidade Sagrado Coração University, Bauru, São Paulo, Brazil.
authors.forename: Daniela Daufenback
authors.initials: DD
authors.lastname: Pompeo
authors.affiliation: PhD Student, Department of Oral Biology, Universidade Sagrado Coração University, Bauru, São Paulo, Brazil.
authors.forename: Gisela Crippa
authors.initials: GC
authors.lastname: Furtado
authors.affiliation: Associate Professor, Department of Oral Biology, Universidade Sagrado Coração University, Bauru, São Paulo, Brazil.
authors.forename: Luciana Monti Lima
authors.initials: LM
authors.lastname: Rivera
authors.affiliation: Associate Professor, Department of Dentistry, Federal University of Sergipe Lagarto, Sergipe, Brazil CEP: 49037-330, e-mail: paranhos@ortodontista.com.br.
authors.forename: Luiz Renato
authors.initials: LR
authors.lastname: Paranhos
mesh_terms: D000293:Adolescent; D019412:Anatomy, Cross-Sectional / Q000379:methods*; D002508:Cephalometry / Q000379:methods*; D002680:Chin / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D003724:Dental Arch / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D004424:Ear Canal / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D005145:Face / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods; D008297:Male; D008334:Mandible / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D008335:Mandibular Condyle / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D008437:Maxilla / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D003765:Models, Dental; D009295:Nasal Bone / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D009666:Nose / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D009915:Orbit / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D056739:Pterygopalatine Fossa / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D011859:Radiography; D019291:Skull Base / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D014716:Vertical Dimension; D055815:Young Adult
keywords: Cephalometry; Furtado GC; Mor phometrics; Paranhos LR . Is It Possible to use Cross -sectional and Vertical Facial Measurements to establish the Shape of the Mandibular Arch? J Contemp Dent Pract 2014;15(6):735-739. Source of support: Nil Conflict of interest: None.; Pompeo DD; Rivera LML; Stabilit y and retention; Treatment planning. How to cite this article: El Haje OA