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Finite Element Analysis Model for Assessing Expansion Patterns from Surgically Assisted Rapid Palatal Expansion
Published on: October 20, 2023
[A three-dimensional finite element study on the influence of different protraction force on cranio-maxillary
1Department of Orthodontics, Stomatological Hospital, Xi'an Jiaotong University, Xi'an 710004, Shanxi Province, China. zoumin79@sina.com
Summary
Maxillary protraction using a three-dimensional finite element model (3-D FEM) shows forward and upward movement of the maxilla. Forces exceeding 5N may cause significant changes in the cranio-maxillary complex.
Area of Science:
- Orthodontics
- Biomechanical analysis
- Craniofacial development
Background:
- Maxillary deficiency requires effective clinical treatment strategies.
- Understanding the biomechanical effects of maxillary protraction is crucial for optimizing treatment outcomes.
Purpose of the Study:
- To establish a 3-D finite element model (FEM) for analyzing maxillary deficiency.
- To investigate the influence of protraction force on the cranio-maxillary complex.
Main Methods:
- A 3-D FEM was created from CT scans of a patient with maxillary deficiency.
- Varying protraction forces (3N to 8N) were applied to the maxillary canine area.
- Displacement and stress distribution were analyzed using ANSYS 10.0 software.
Main Results:
- Maxilla exhibited forward and upward displacement (N, A, ANS points).
- Posterior maxillary dental arch showed a medial movement trend.
- Increased force led to greater displacement and stress, with significant changes observed above 5N.
Conclusions:
- Maxillary protraction results in forward/upward displacement and upper arch constriction.
- Careful application of forces greater than 5N is recommended to avoid unintended consequences.
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