Determinants of successful chincup therapy in skeletal class III malocclusion

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Young-Il KoWon-Sik Yang

Abstract

The purpose of this study was to investigate skeletal characteristics that determine successful chincup therapy in patients with skeletal Class III malocclusions by using longitudinal follow-up data of 40 patients (18 male, 22 female). Lateral cephalometric radiographs were taken before chincup therapy (T0), after chincup therapy (T1), and after fixed orthodontic treatment and retention (T2). From the measurements at T2, the patients were classified into group 1, showing good retention results (n = 21; 9 male, 12 female), or group 2, showing poor results (n = 19; 9 male, 10 female). The differences at each stage and during T0 to T1 and T1 to T2 between the 2 groups were compared by t tests. The major effect of chincup therapy was backward rotation of the mandible in both groups; however, the amount of rotation was greater in group 2. After retention, group 2 showed more forward rotation and forward growth of the mandible than group 1. Cephalometric measurements that showed significant differences in skeletal and dental morphology between the 2 groups at T0 were L1 to occlusal plane (P <.001), upper gonial angle, AB to occlusal plane angle, AB to mandibular plane angle, ANB, anteroposterior dysplasia indicator, Wits appraisal (P...Continue Reading

Citations

Jul 24, 2010·European Journal of Orthodontics·Piotr FudalejBarbara Wedrychowska-Szulc
Sep 3, 2014·European Journal of Orthodontics·Monika A ZurfluhTheodore Eliades
Feb 17, 2017·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Brigitte WendlM Wendl
Mar 5, 2016·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Bernd ZimmerHenning Dathe
May 2, 2015·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·José Antonio AlarcónConchita Martín
Jun 17, 2015·The Journal of Craniofacial Surgery·Heon-Mook ParkSeung-Hak Baek
Nov 22, 2017·Dental press journal of orthodontics·Flávio Siqueira CalçadaFlávio Atsushi Takamatsu
Jun 23, 2009·The Angle Orthodontist·Bo-Mi KimSeung-Hak Baek
Apr 30, 2020·European Journal of Orthodontics·Federica MontinaroLetizia Perillo
Mar 6, 2015·Dental press journal of orthodontics·Daniele Nóbrega NardoniLeopoldino Capelozza Filho
Dec 5, 2020·Clinical and Experimental Dental Research·Antonio Jiménez-SilvaHernán Palomino-Montenegro
Sep 30, 2017·Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology·Bo-Ram YeoMin-Suk Kook

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