title: Computer-Aided Designing and Manufacturing of Lingual Fixed Orthodontic Appliance Using 2D/3D Registration Software and Rapid Prototyping.
abstract: The availability of 3D dental model scanning technology, combined with the ability to register CBCT data with digital models, has enabled the fabrication of orthognathic surgical CAD/CAM designed splints, customized brackets, and indirect bonding systems. In this study, custom lingual orthodontic appliances were virtually designed by merging 3D model images with lateral and posterior-anterior cephalograms. By exporting design information to 3D CAD software, we have produced a stereolithographic prototype and converted it into a cobalt-chrome alloy appliance as a way of combining traditional prosthetic investment and cast techniques. While the bonding procedure of the appliance could be reinforced, CAD technology simplified the fabrication process by eliminating the soldering phase. This report describes CAD/CAM fabrication of the complex anteroposterior lingual bonded retraction appliance for intrusive retraction of the maxillary anterior dentition. Furthermore, the CAD/CAM method eliminates the extra step of determining the lever arm on the lateral cephalograms and subsequent design modifications on the study model.
authors.affiliation: Department of Orthodontics, School of Dentistry, Kyung Hee University, No. 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
authors.forename: Soon-Yong
authors.initials: SY
authors.lastname: Kwon
authors.affiliation: Department of Orthodontics, School of Dentistry, Kyung Hee University, No. 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
authors.forename: Yong
authors.identifier: 0000-0003-0556-7148
authors.initials: Y
authors.lastname: Kim
authors.affiliation: Department of Orthodontics, School of Dentistry, Kyung Hee University, No. 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
authors.forename: Hyo-Won
authors.identifier: 0000-0002-4872-7095
authors.initials: HW
authors.lastname: Ahn
authors.affiliation: Department of Orthodontics, Center for Advanced Dental Education, Saint Louis University, 3320 Rutger Street, Saint Louis, MO 63104, USA.
authors.forename: Ki-Beom
authors.initials: KB
authors.lastname: Kim
authors.affiliation: Department of Orthodontics, School of Medicine, Ajou University, No. 1 Wonchun-dong, Yeongtong-gu, Suwon 443-380, Republic of Korea.
authors.forename: Kyu-Rhim
authors.initials: KR
authors.lastname: Chung
authors.affiliation: Department of Orthodontics, School of Dentistry, Kyung Hee University, No. 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
authors.forename: Seong-Hun
authors.initials: SH
authors.lastname: Kim Sunny