Mesiodistal angulation and faciolingual inclination of each whole tooth in 3-dimensional space in patients with near-normal occlusion

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Hongsheng TongGlenn T Sameshima

Abstract

An important objective of orthodontic treatment is to obtain the correct mesiodistal angulation and faciolingual inclination for all teeth. Current techniques are based on crown angulation and inclination standards, and not enough attention has been given to the roots. In this study, we report the mesiodistal angulation and faciolingual inclination of each whole tooth including the root in patients with near-normal occlusion. We screened 1840 patients who had cone-beam computed tomography scans taken before treatment to obtain a sample of 76 patients with near-normal occlusion. Using our custom University of Sourthern California root vector analysis software program, we digitized the crown and root centers to determine the "true" long axis of each tooth from where the mesiodistal angulation and the faciolingual inclination were measured. The means and standard deviations for the mesiodistal angulation and the faciolingual inclination of each whole tooth were calculated. The maxillary angulations of the teeth started from approximately 6° for the central incisors, slightly increased for the lateral incisors, and peaked at 11° for the canines; then it gradually decreased to just above 0° for the first molars and eventually reache...Continue Reading

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Citations

Mar 4, 2014·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Robert J LeeHongsheng Tong
May 26, 2015·Journal of Cranio-maxillo-facial Surgery : Official Publication of the European Association for Cranio-Maxillo-Facial Surgery·Sandrine Touzet-RoumazeilleArnaud Picard
Apr 19, 2015·European Journal of Orthodontics·Sarmad S Salih Al QassarDemetrios J Halazonetis
Dec 24, 2014·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Robert J LeeHongsheng Tong
Apr 5, 2017·The Angle Orthodontist·Rola Alkhatib, Chun-Hsi Chung
Jul 1, 2015·Imaging Science in Dentistry·Jong-Woong ParkSoon-Chul Choi
Feb 2, 2020·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Carmen LorenteTeresa Lorente
Jul 22, 2018·Journal of Healthcare Engineering·Xinwen ZhouZeyang Xia
Apr 20, 2018·Annals of Biomedical Engineering·Falko SchmidtBernd Georg Lapatki

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