Journal article

3D assessment of mandibular skeletal effects produced by the Herbst appliance

Yi Fan, Paul Schneider, Harold Matthews, Wilbur Eugene Roberts, Tianmin Xu, Robert Wei, Peter Claes, John Clement, Nicky Kilpatrick, Anthony Penington

BMC Oral Health | BMC | Published : 2020

Abstract

BACKGROUND: A functional appliance is commonly used to optimize the development of the facial skeleton in the treatment of Class II malocclusion. Recent three-dimensional(3D) image-based analysis offers numerous advantages in quantitative measurement and visualization in orthodontics. The aim of this study was to localize in 3D the skeletal effect produced by the Herbst appliance on the mandible using the geometric morphometric technique. METHODS: Twenty patients treated with a Herbst appliance and subsequent fixed appliances were included. Cone-beam computed tomography (CBCT) images were taken before treatment (T1), 8 weeks after Herbst appliance removal (T2), and after subsequent fixed app..

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