title: The effect of root and bone visualization on perceptions of the quality of orthodontic treatment simulations.
abstract: OBJECTIVE
  To evaluate the effect of root and bone visibility on orthodontists' perceptions of the quality of treatment simulations.
  
  
  METHODS
  An online survey was used to present orthodontists with setups generated for 10 patients in two different types of view: with and without bone and roots as modeled from a cone-beam computed tomography (CBCT) scan. The orthodontists were asked to rate the quality of the setups from poor to ideal on a 100-point visual analog scale and, if applicable, to identify features of concern that led them to giving a setup a less-than-ideal rating.
  
  
  RESULTS
  The quality ratings were significantly lower when roots and bone were visible in the setups (P < .0001). Buccolingual inclination and periodontal concerns were selected significantly more often as reasons for a less-than-ideal rating when roots and bone were shown, whereas occlusal relationship, overjet, occlusal contacts, and arch form were selected significantly more often as reasons for a less-than-ideal rating when roots and bone were not shown. The odds of selecting periodontal concerns as a reason for a less-than-ideal setup rating were 331 times greater when roots and bones were visible than when they were not.
  
  
  CONCLUSIONS
  Additional diagnostic information derived from CBCT scans affects orthodontists' perceptions of the overall case quality, which may influence their treatment-planning decisions.
authors.forename: Thorsten
authors.initials: T
authors.lastname: Grünheid
authors.forename: Danae C
authors.initials: DC
authors.lastname: Kirk
authors.forename: Brent E
authors.initials: BE
authors.lastname: Larson
mesh_terms: D000539:Alveolar Process / Q000000981:diagnostic imaging*; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D009970:Orthodontics; D000066792:Orthodontists / Q000523:psychology*; D010347:Patient Care Planning; D011787:Quality of Health Care; D012984:Software; D011795:Surveys and Questionnaires; D014092:Tooth Root / Q000000981:diagnostic imaging*; D014481:United States
keywords: 3-D imaging; CBCT; Case quality; Setup