title: Anticipating root displacements: unlocking new prospects.
abstract: OBJECTIVE
  The aim of this study was to visualize and quantify root displacements in the bone base of a patient before orthodontic treatment and obtain an optimal set-up that would include information on both coronal and root movements.
  
  
  METHODS
  Data from a patient's scan records, the initial plaster model and scanned set-up are migrated into the Amira® software for advanced mesh and surface analysis. Using this software, each tooth of the initial 3D-reconstruction scan is isolated then superimposed over that of the initial model. The set-up is then positioned onto the initial model at second molar level and dragged onto the initial 3D reconstruction. Lastly, the roots are repositioned on the crowns on the set-up.
  
  
  RESULTS
  This study enabled the visualization and quantification of dental displacements (crowns and roots) from initial to expected final position in a three-dimensional space reconstruction.
  
  
  CONCLUSIONS
  This technique, carried out routinely thanks to the advent of cone beam tomography, can help optimize orthodontic treatments, notably by anticipating root proximity issues during set-up preparation.
authors.affiliation: Département d'ODF, UFR d'odontologie, Reims, France. anne.benoitgoglin@gmail.com
authors.forename: Anne
authors.initials: A
authors.lastname: Goglin-Benoit
authors.forename: Maxime
authors.initials: M
authors.lastname: Jaisson
authors.forename: Christian
authors.initials: C
authors.lastname: Palot
authors.forename: Stéphane
authors.initials: S
authors.lastname: Barthelemi
mesh_terms: D000293:Adolescent; D003198:Computer Simulation; D054893:Cone-Beam Computed Tomography; D005146:Facial Asymmetry / Q000503:physiopathology / Q000628:therapy; D005544:Forecasting; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008310:Malocclusion / Q000503:physiopathology / Q000628:therapy; D003765:Models, Dental; D011873:Radiology Information Systems; D012984:Software; D014092:Tooth Root / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D016896:Treatment Outcome