title: Dental image replacement on cone beam computed tomography with three-dimensional optical scanning of a dental cast, occlusal bite, or bite tray impression.
abstract: The goal of the present study was to compare the accuracy of dental image replacement on a cone beam computed tomography (CBCT) image using digital image data from three-dimensional (3D) optical scanning of a dental cast, occlusal bite, and bite tray impression. A Bracket Typodont dental model was used. CBCT of the dental model was performed and the data were converted to stereolithography (STL) format. Three experimental materials, a dental cast, occlusal bite, and bite tray impression, were optically scanned in 3D. STL files converted from the CBCT of the Typodont model and the 3D optical-scanned STL files of the study materials were image-registered. The error range of each methodology was measured and compared with a 3D optical scan of the Typodont. For the three materials, the smallest error observed was 0.099±0.114mm (mean error±standard deviation) for registering the 3D optical scan image of the dental cast onto the CBCT dental image. Although producing a dental cast can be laborious, the study results indicate that it is the preferred method. In addition, an occlusal bite is recommended when bite impression materials are used.
authors.affiliation: Department of Oral and Maxillofacial Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Republic of Korea. Electronic address: omfs1ksh@daum.net.
authors.forename: S-H
authors.initials: SH
authors.lastname: Kang
authors.affiliation: Department of Oral and Maxillofacial Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea.
authors.forename: J-W
authors.initials: JW
authors.lastname: Lee
authors.affiliation: Department of Oral and Maxillofacial Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea.
authors.forename: S-H
authors.initials: SH
authors.lastname: Lim
authors.affiliation: Department of Oral and Maxillofacial Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea.
authors.forename: Y-H
authors.initials: YH
authors.lastname: Kim
authors.affiliation: Department of Oral and Maxillofacial Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Republic of Korea.
authors.forename: M-K
authors.initials: MK
authors.lastname: Kim
mesh_terms: D054893:Cone-Beam Computed Tomography; D003761:Dental Impression Technique / Q000295:instrumentation*; D003764:Dental Materials; D003766:Dental Occlusion; D006801:Humans; D021621:Imaging, Three-Dimensional; D007574:Jaw Relation Record / Q000295:instrumentation*; D003765:Models, Dental
chemical_list: D003764:Dental Materials
keywords: computed tomography; dental occlusion; registration