title: Accuracy of templates for navigated implantation made by rapid prototyping with DICOM datasets of cone beam computer tomography (CBCT).
abstract: The aim of this study is to evaluate the accuracy of a surgical template-aided implant placement produced by rapid prototyping using a DICOM dataset from cone beam computer tomography (CBCT). On the basis of CBCT scans (Sirona® Galileos), a total of ten models were produced using a rapid-prototyping three-dimensional printer. On the same patients, impressions were performed to compare fitting accuracy of both methods. From the models made by impression, templates were produced and accuracy was compared and analyzed with the rapid-prototyping model. Whereas templates made by conventional procedure had an excellent accuracy, the fitting accuracy of those produced by DICOM datasets was not sufficient. Deviations ranged between 2.0 and 3.5 mm, after modification of models between 1.4 and 3.1 mm. The findings of this study suggest that the accuracy of the low-dose Sirona Galileos® DICOM dataset seems to show a high deviation, which is not useable for accurate surgical transfer for example in implant surgery.
authors.affiliation: Department of Oral- and Cranio-maxillofacial Surgery, Klinikum rechts der Isar der Technischen Universität, Munich, Germany.
authors.forename: Jochen
authors.initials: J
authors.lastname: Weitz
authors.forename: Herbert
authors.initials: H
authors.lastname: Deppe
authors.forename: Sebastian
authors.initials: S
authors.lastname: Stopp
authors.forename: Tim
authors.initials: T
authors.lastname: Lueth
authors.forename: Steffen
authors.initials: S
authors.lastname: Mueller
authors.forename: Bettina
authors.initials: B
authors.lastname: Hohlweg-Majert
mesh_terms: D000328:Adult; D017076:Computer-Aided Design / Q000592:standards; D054893:Cone-Beam Computed Tomography / Q000379:methods* / Q000592:standards; D003758:Dental Implantation, Endosseous / Q000295:instrumentation*; D003761:Dental Impression Technique / Q000592:standards; D003764:Dental Materials / Q000737:chemistry; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods* / Q000592:standards; D021621:Imaging, Three-Dimensional / Q000379:methods / Q000592:standards; D008297:Male; D008875:Middle Aged; D003765:Models, Dental / Q000592:standards; D011076:Polycarboxylate Cement / Q000737:chemistry; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000592:standards; D011873:Radiology Information Systems / Q000592:standards; D013499:Surface Properties; D055815:Young Adult
chemical_list: D003764:Dental Materials; D011076:Polycarboxylate Cement; C005506:polycarbonate