Study on the three-dimensional finite element simulation model of periodontal membrane based on micro-CT imaging

Abstract

Objective To establish the three-dimensional finite element simulation model of periodontal membrane by micro-CT scanning data. Methods A human maxillary jaw segment containing central incisor was scanned with micro-CT for section images, which were managed with Mimics software to form a geometric model. The model was imported to remesh module for optimization and then the three-dimentional finite element model was constructed by Ansys. Results The three-dimensional finite element models encompassing 12 936 nodes and 6 400 tetrahedral element, which highly resemble the structure of periodontal ligament. Tooth (60 872 nodes and 42 144 tetrahedral element) and alveolar bone models (41 472 nodes and 32 339 tetrahedral element) were constructed successfully. Conclusion The three-dimen- sional finite element simulation model of periodontal membrane can be established by micro-CT combined with Mimics and Ansys software. After adding the corresponding tooth alveolar bone, it can be further used in orthodontic biomechanicsanalysis.

Keywords

• Micro-CT，
• Periodontal ligament，
• Three-dimensional finite element ，
• Mimics ，
• Stress，