title: Comparison of cone-beam and conventional multislice computed tomography for image-guided dental implant planning.
abstract: OBJECTIVE
  To compare the accuracy of cone-beam CT (CBCT) and multislice CT (MSCT) with regard to its use in image-guided dental implant surgery in a prospective model based study.
  
  
  METHODS
  Ten photopolymer-acrylate mandibula models, each with four precise metal reference markers, were scanned with MSCT and CBCT. The six reference distances between the markers were measured by a three-axis milling machine first. The distances were then measured by (1) navigation with the Medtronic StealthStation® TREON™ image-guided surgery system, (2) with the Medtronic planning-tool and (3) on the PC with the Mimics® software. Mean values were calculated for all three methods for CBCT and MSCT and were compared for statistical significance.
  
  
  RESULTS
  Of all measurements, 83% of the arithmetic mean values were within the ±0.5 mm range (MSCT 88% and CBCT 78%) and 17% within the ±1.0 mm range (MSCT 12% and CBCT 22%). The absolute difference of the arithmetic mean values showed no statistically significant difference between MSCT and CBCT. The difference of the overall mean values to the reference was 0.43 mm for MSCT and 0.46 mm for CBCT.
  
  
  CONCLUSIONS
  The data of our study prove that the application of CBCT for the indicated purpose yielded good results comparable to those of MSCT. All three measuring methods were feasible and accuracy was statistically not different between the data acquired by MSCT and CBCT within the setting of this study.
authors.affiliation: University Hospital for Cranio-Maxillofacial and Oral Surgery, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
authors.forename: Paul W
authors.initials: PW
authors.lastname: Poeschl
authors.forename: Nina
authors.initials: N
authors.lastname: Schmidt
authors.forename: Godoberto
authors.initials: G
authors.lastname: Guevara-Rojas
authors.forename: Rudolf
authors.initials: R
authors.lastname: Seemann
authors.forename: Rolf
authors.initials: R
authors.lastname: Ewers
authors.forename: Harald T
authors.initials: HT
authors.lastname: Zipko
authors.forename: Kurt
authors.initials: K
authors.lastname: Schicho
mesh_terms: D002508:Cephalometry / Q000706:statistics & numerical data; D017076:Computer-Aided Design; D054893:Cone-Beam Computed Tomography / Q000706:statistics & numerical data*; D003481:Cuspid / Q000000981:diagnostic imaging; D003758:Dental Implantation, Endosseous / Q000379:methods*; D015921:Dental Implants; D005240:Feasibility Studies; D057918:Fiducial Markers; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000706:statistics & numerical data; D008334:Mandible / Q000000981:diagnostic imaging; D008838:Microcomputers; D008953:Models, Anatomic; D008963:Molar / Q000000981:diagnostic imaging; D061330:Multidetector Computed Tomography / Q000706:statistics & numerical data*; D010347:Patient Care Planning; D011446:Prospective Studies; D012984:Software; D025321:Surgery, Computer-Assisted / Q000379:methods*
chemical_list: D015921:Dental Implants