title: Integration of three-dimensional cephalometry and 3D-skull models in combined orthodontic/surgical treatment planning.
abstract: In 15 adult patients with severe dentomaxillofacial deformities we integrated 3-dimensional cephalometry and 3D-model surgery with individually milled or stereolithographically built skull models in our combined orthodontic/surgical diagnosis and treatment planning. After the generation of contiguous axial CT-scans the CT data sets were transferred to a commonly used computing system (IBM-PC) to reconstruct 3D-images from any point of view. After the definition of measurement points, distances and angles at the skin and bone surface a 3-dimensional cephalometric analysis could be performed directly in the 3D-objects on the monitor. This allows a quantitative assessment of skeletal asymmetries. The transfer of CT data to life-size 3D-skull models and replacement of imprecise dental arches by dental casts different orthodontic and surgical treatment concepts could be evaluated. The 3D-model surgery represents a new quality of treatment prediction in the individual dentomaxillofacial morphology. The orthodontic set-up and 3D-model surgery permit a verification of the feasibility of the most suitable mobilization and placement of bone segments. The clinical treatment sequences indicated that the integration of 3-dimensional cephalometry and 3D-model surgery in patients with severe asymmetric dentomaxillofacial deformities allowed a higher precision of diagnosis and treatment planning.
authors.affiliation: Klinik für Kieferorthopädie, Medizinische Fakultät, RWTH Aachen.
authors.forename: R
authors.initials: R
authors.lastname: Fuhrmann
authors.forename: H
authors.initials: H
authors.lastname: Feifel
authors.forename: A
authors.initials: A
authors.lastname: Schnappauf
authors.forename: P
authors.initials: P
authors.lastname: Diedrich
mesh_terms: D000328:Adult; D002508:Cephalometry / Q000379:methods*; D005146:Facial Asymmetry / Q000175:diagnosis / Q000628:therapy; D005260:Female; D006801:Humans; D007569:Jaw Abnormalities / Q000175:diagnosis / Q000628:therapy; D008297:Male; D008953:Models, Anatomic; D009971:Orthodontics, Corrective / Q000379:methods*; D010347:Patient Care Planning; D012886:Skull / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D013515:Surgery, Oral / Q000379:methods*; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods; D014071:Tooth Abnormalities / Q000175:diagnosis / Q000628:therapy