STRESS ANALYSIS OF TEETH, PERIODONTAL TISSUES, AND MAXILLA BONES DUE TO BRUXISM
DOI:
https://doi.org/10.11113/aej.v12.17735Keywords:
Bruxism modeling, 3D reconstruction and modeling of jaw, Finite element analysis, Stress analysisAbstract
This paper investigates the stress distribution on the teeth and jaw during bruxism that may provide additional insights to the consequences of bruxism, splint design considerations, a basis for possible therapy protocols, and a baseline for future bruxism studies. A three-dimensional (3D) solid model of a complete jaw comprised of teeth, periodontal ligaments, and maxilla bone is reconstructed based on a Cone Beam Computed Tomography (CBCT) scan of a patient. A finite element model of the jaw is then constructed using the geometry imported from the solid model that has been reworked to remove imperfections during reconstruction and to allow proper contact between teeth. A linear elastic finite element analyses were then performed to simulate the bruxism phenomenon which includes biting and grinding. Numerical analysis is conducted only to the maxilla, with forces are placed on the teeth’s surface where contact occurs. The analysis is conducted for all stages of bruxism and possible movements patterns. Results suggest that high stresses occur during grinding, indicating a strong correlation between bruxism and dental issues such as tooth wear and alveolar resorption.
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