Effects of Class II activator and Class II activator high-pull headgear combination on the mandible: a 3-dimensional finite element stress analysis study

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Cağri Ulusoy, Nilüfer Darendeliler

Abstract

The aim of this study was to evaluate the effects of the Class II activator and the Class II activator high-pull headgear (HG) combination on the mandible with 3-dimensional (3D) finite element stress analysis. A 3D finite element model of the mandible was constructed from a dry human mandible. To investigate the effects of the Class II activator, a 3D model of the lower part of this appliance was constructed and fixed on the mandibular model. The Class II activator high-pull headgear model was established as described, and an extraoral traction force of 350 g was directed from the middle of the Class II activator to the top of the mandibular condyle. The stress regions were studied with the finite element method. The regions near the muscle attachment areas were affected the most. The inner part of the coronoid process and the gonial area had the maximum stress values. Both functional appliances can cause morphologic changes on the mandible by activating the masticatory muscles to change the growth direction.

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Citations

Jul 31, 2012·International Journal of Biomaterials·Yiu Pong ChanBo Gao
Jun 23, 2009·The Angle Orthodontist·Priyankar Panigrahi, Varadarajan Vineeth
Aug 4, 2012·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Yan LvLin Wang
Dec 10, 2015·Disease Markers·A R RamaJ Prados
Feb 1, 2015·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Anshul ChaudhryAshutosh Kaushik
Mar 15, 2003·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Valmy Pangrazio-KulbershAndre Haerian
Jan 18, 2014·Craniomaxillofacial Trauma & Reconstruction·Neralla MahathiC Ravindran

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