title: Evaluation of the validity of the Bolton Index using cone-beam  computed tomography (CBCT).
abstract: OBJECTIVE
  To evaluate the reliability and reproducibility of calculating the Bolton Index using cone-beam computed tomography (CBCT), and to compare this with measurements obtained using the 2D Digital Method.
  
  
  METHODS
  Traditional study models were obtained from 50 patients, which were then digitized in order to be able to measure them using the Digital Method. Likewise, CBCTs of those same patients were undertaken using the Dental Picasso Master 3D® and the images obtained were then analysed using the InVivoDental programme.
  
  
  RESULTS
  By determining the regression lines for both measurement methods, as well as the difference between both of their values, the two methods are shown to be comparable, despite the fact that the measurements analysed presented statistically significant differences.
  
  
  CONCLUSIONS
  The three-dimensional models obtained from the CBCT are as accurate and reproducible as the digital models obtained from the plaster study casts for calculating the Bolton Index. The differences existing between both methods were clinically acceptable.
authors.affiliation: Faculty of Medicine and Dentistry, University of Valencia, Clínica Odontológica, Departamento de Estomatología, Unidad Docente de Ortodoncia, Gasco Oliag n 1, 46010 Valencia, Spain. beatriz.tarazona@hotmail.com
authors.forename: Beatriz
authors.initials: B
authors.lastname: Tarazona
authors.forename: José-María
authors.initials: JM
authors.lastname: Llamas
authors.forename: Rosa
authors.initials: R
authors.lastname: Cibrián
authors.forename: José-Luis
authors.initials: JL
authors.lastname: Gandía
authors.forename: Vanessa
authors.initials: V
authors.lastname: Paredes
mesh_terms: D000328:Adult; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000175:diagnosis*; D009971:Orthodontics, Corrective / Q000379:methods; D015203:Reproducibility of Results