title: Comparison of tooth displacement between buccal mini-implants and palatal plate anchorage for molar distalization: a finite element study.
abstract: The purposes of this study were to mechanically evaluate distalization modalities through the application of skeletal anchorage using finite element analysis. Base models were constructed from commercial teeth models. A finite element model was created and three treatment modalities were modified to make 10 models. Modalities 1 and 2 placed mini-implants in the buccal side, and modality 3 placed a plate on the palatal side. Distalization with the palatal plate in modality 3 showed bodily molar movement and insignificant displacement of the incisors. Placing mini-implants on the buccal side in modalities 1 and 2 caused the first molar to be distally tipped and extruded, while the incisors were labially flared and intruded. Distalization with the palatal plate rather than mini-implants on the buccal side provided bodily molar movement without tipping or extrusion. It is recommended to use our findings as a clinical guide for the application of skeletal anchorage devices for molar distalization.
authors: Department of Orthodontics, The Catholic University of Korea, Seoul.
authors: Il-Jun
authors: IJ
authors: Yu
authors: Department of Orthodontics, Seoul St Mary's Hospital, The Catholic University of Korea, Seoul.
authors: Yoon-Ah
authors: YA
authors: Kook
authors: Department of Orthodontics, Asan Medical Center, University of Ulsan, Seoul dmoss1@hanmail.net.
authors: Sang-Jin
authors: SJ
authors: Sung
authors: Department of Orthodontics, College of Dentistry, Yonsei University, Seoul.
authors: Kee-Joon
authors: KJ
authors: Lee
authors: Department of Orthodontics, Ehwa Womans University Mokdong Hospital, Seoul.
authors: Youn-Sic
authors: YS
authors: Chun
authors: Department of Orthodontics, Yeouido St Mary's Hospital, The Catholic University of Korea, Seoul, Korea dmoss1@hanmail.net.
authors: Sung-Seo
authors: SS
authors: Mo
mesh_terms: D001860:Bone Plates; D002508:Cephalometry / Q000379:methods; D003198:Computer Simulation; D015921:Dental Implants; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D007180:Incisor / Q000473:pathology; D008312:Malocclusion, Angle Class II / Q000628:therapy; D008437:Maxilla / Q000473:pathology; D008904:Miniaturization; D008953:Models, Anatomic; D008963:Molar / Q000473:pathology*; D052280:Orthodontic Anchorage Procedures / Q000295:instrumentation*; D016382:Orthodontic Appliance Design; D009969:Orthodontic Wires; D019227:Tooth Apex / Q000473:pathology; D014087:Tooth Movement Techniques / Q000295:instrumentation*
chemical_list: D015921:Dental Implants