title: The use of a new 3D splint and double CT scan procedure to obtain an accurate anatomic virtual augmented model of the skull.
abstract: Three-dimensional (3D) virtual planning of orthognathic surgery requires detailed visualization of the interocclusal relationship. The purpose of this study was to introduce the modification of the double computed tomography (CT) scan procedure using a newly designed 3D splint in order to obtain a detailed anatomic 3D virtual augmented model of the skull. A total of 10 dry adult human cadaver skulls were used to evaluate the accuracy of the automatic rigid registration method for fusion of both CT datasets (Maxilim, version 1.3.0). The overall mean registration error was 0.1355+/-0.0323 mm (range 0.0760-0.1782 mm). Analysis of variance showed a registration method error of 0.0564 mm (P < 0.001; 95% confidence interval = 0.0491-0.0622). The combination of the newly designed 3D splint with the double CT scan procedure allowed accurate registration and the set-up of an accurate anatomic 3D virtual augmented model of the skull with detailed dental surface.
authors.affiliation: Division of Maxillo-Facial Surgery, Department of Surgery, General Hospital St-Jan Bruges, Rudershove 10, 8000 Bruges, Belgium. gwen.swennen@azbrugge.be
authors.forename: G R J
authors.initials: GR
authors.lastname: Swennen
authors.forename: E-L
authors.initials: EL
authors.lastname: Barth
authors.forename: C
authors.initials: C
authors.lastname: Eulzer
authors.forename: F
authors.initials: F
authors.lastname: Schutyser
mesh_terms: D000328:Adult; D002102:Cadaver; D003198:Computer Simulation; D003766:Dental Occlusion; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007568:Jaw / Q000000981:diagnostic imaging; D007574:Jaw Relation Record; D008953:Models, Anatomic; D003765:Models, Dental; D012886:Skull / Q000033:anatomy & histology*; D013165:Splints; D025321:Surgery, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000379:methods; D014584:User-Computer Interface