Morphometric analysis of mandibular growth in skeletal Class III malocclusion

Journal of the Formosan Medical Association = Taiwan Yi Zhi
Jenny Zwei-Chieng ChangWan-Hong Lan

Abstract

The craniofacial growth patterns of untreated individuals with skeletal Class III malocclusion have rarely been systemically investigated. This study used morphometric techniques to investigate the growth characteristics of the mandible in individuals with skeletal Class III malocclusion. Lateral cephalometric head films of 294 individuals with untreated skeletal Class III malocclusion (134 males, 160 females) were selected and divided into five triennial age groups (T1-T5) and by gender to identify the morphologic characteristics and sexual dimorphism in changes of mandibular growth. Procrustes, thin-plate spline, and finite element analyses were performed for localization of differences in shape and size changes. Maximum and minimum principal axes were drawn to express the directions of shape changes. From T1 (age 6-8 years) to T4 (age 15-17 years), the distribution of localized size and shape changes of the mandible was very similar between the two genders. From T1 to T2 (age 9-11 years), significant lengthening of the condylar region was noted (23.4-39.7%). From T2 to T3 (age 12-14 years), the greatest size and shape change occurred at the condylar head (27.4-34.9%). From T3 to T4, the greatest size and shape changes occurr...Continue Reading

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Citations

Dec 24, 2014·Journal of the Formosan Medical Association = Taiwan Yi Zhi·Saran WorasakwutiphongLun-Jou Lo
Jul 5, 2011·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·José Antonio AlarcónJulia Molero
Nov 5, 2019·Orthodontics & Craniofacial Research·Valentina RutiliLorenzo Franchi
Aug 27, 2009·The Angle Orthodontist·Tiziano BaccettiJames A McNamara
Aug 7, 2013·The Angle Orthodontist·Susan N Al-KhateebSerene A Badran
Apr 18, 2008·The Angle Orthodontist·Peter ProffTomas Gedrange
Feb 27, 2008·The Angle Orthodontist·Veronica GiuntiniTiziano Baccetti
Oct 25, 2008·The Angle Orthodontist·Manuela MucederoPaola Cozza
Dec 13, 2016·European Journal of Orthodontics·Alexis Katsadouris, Demetrios J Halazonetis

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