A comparison of dental arch forms between Class II Division 1 and normal occlusion assessed by euclidean distance matrix analysis

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Qiong Nie, Jiuxiang Lin

Abstract

The purpose of the study was to use euclidean distance matrix analysis to compare dental arch forms between subjects with Class II Division 1 malocclusions and normal occlusions. The sample consisted of 60 subjects with Class II Division 1 malocclusions and 60 subjects with normal occlusions, all between 13 and 17 years of age. Fourteen landmarks, corresponding to cusp tips and incisor edges, were identified on the dental casts with a 3-dimensional measuring machine. All possible linear distances between pairs of landmarks in an arch were computed, and arch-form differences between Class II Division 1 and normal-occlusion subjects were tested by euclidean distance matrix analysis. In both sexes, the maxillary arches of the Class II Division 1 subjects were larger than the arches of the normal-occlusion subjects (1.8% and 2.7% larger for girls and boys, respectively), and arch shape was also significantly different (P < .001). The posterior teeth contributed to the shape difference between 2 groups more than the anterior teeth, moreover the main factor was narrow maxillary posterior arch width in the Class II Division 1 subjects. The mandibular arches of the Class II Division 1 subjects were also slightly larger, and arch shape ...Continue Reading

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Citations

Mar 3, 2012·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·T E BechtoldM Berneburg
Oct 13, 2010·The Angle Orthodontist·Gerard O'MahonyMichael S Cronin
Aug 10, 2007·The Angle Orthodontist·Joel HuthJane Jakobsen
Nov 26, 2013·International orthodontics·Luca LombardoGiuseppe Siciliani
Apr 6, 2013·International orthodontics·Luca LombardoGiuseppe Siciliani
Sep 8, 2010·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Luca LombardoGiuseppe Siciliani
Jul 14, 2010·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Deepak GuptaLeslie A Will
Jul 14, 2010·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Randy L BallKazuhito Arai
Jan 5, 2008·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Tarcila TriviñoMarco Antonio Scanavini
Nov 8, 2015·International orthodontics·Luca LombardoGiuseppe Siciliani
Nov 1, 2012·Korean Journal of Orthodontics·Siti Adibah OthmanNik Noriah Nik Hussein
Apr 16, 2020·Journal of Orofacial Orthopedics = Fortschritte Der Kieferorthopädie : Organ/official Journal Deutsche Gesellschaft Für Kieferorthopädie·Andrea DeregibusTommaso Castroflorio
Jan 4, 2021·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Kaiyu FuDanna Xiao

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