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Updated: Jul 17, 2025

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
Published on: April 8, 2020
Stress distribution for mandibular extra-alveolar anchorage at different angles and force magnitudes: a finite
E V Arango-Piloneta1, S P Plaza-Ruiz1, D F León-Lara2
1Orthodontic Department, Fundación Universitaria CIEO-UniCIEO, Bogotá, Colombia.
Abstract:
The aim of this study was to evaluate the stress distribution in cortical and cancellous bones and within the screw when a stainless steel extra-alveolar screw (EA-S) is inserted into the retromolar region of the mandible using the finite element method (FEM). The stress values in the EA-S were highest at 60° with horizontal (shear) force and lowest at 90° with axial force. In the bones (cortical and cancellous), the stress value was greatest at 90° with horizontal force. Greater stability of the screw may be achieved by tilting it to the force when horizontal loads are applied.
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