Three-dimensional finite element analysis of stress distribution and displacement of the maxilla following surgically assisted rapid maxillary expansion

UA Han, Y Kim, JU Park - Journal of Cranio-Maxillofacial Surgery, 2009 - Elsevier
PURPOSE: The aim of this study was to investigate the displacement and stress distributions
during surgically assisted rapid maxillary expansion under different surgical conditions.
MATERIALS AND METHODS: 3-dimensional finite element model of a maxilla with a Hyrax
appliance was constructed and an expansion force of 6000 grams was applied using the
expansion screw. According to the surgical procedures, 5 groups including a control group
without surgery (Group I) were simulated. The experimental groups were as follows; Group II …
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