Modified bone density-dependent orthotropic material model of human mandibular bone.

Area of Science:

• Biomechanics
• Biomaterials Science
• Computational Modeling

Background:

• Accurate computational simulations of human bone biomechanics require precise material property descriptions.
• The human mandible is a critical load-bearing structure, necessitating detailed biomechanical analysis.
• Existing material models may not fully capture the complex mechanical behavior of mandibular bone.

Purpose of the Study:

• To develop and validate a novel, spatially and bone density-dependent orthotropic material model for the human mandible.
• To compare the predictive accuracy of this new model against commonly used models in computational simulations.
• To enhance the understanding of stress distribution in the mandible, particularly around dental implants.

Main Methods:

• Development of a new orthotropic material model incorporating spatial and bone density variations.
• Computational simulation of human mandibular bone behavior with a dental implant using various material models.
• Comparative analysis of stress distribution patterns generated by the new model versus existing models.

Main Results:

• The proposed bone density-dependent orthotropic model yielded higher von Mises equivalent stress values compared to other models.
• The highest stress concentrations were observed at the top of the alveolar ridge.
• Stress distribution was found to be higher in the lingual aspect than in the buccal aspect of the mandible.

Conclusions:

• The novel bone density-dependent orthotropic model offers a more refined approach to simulating human mandibular biomechanics.
• This model improves the prediction of stress distribution, crucial for analyzing the effects of dental implants.
• Findings highlight the importance of considering bone density and spatial variations for accurate biomechanical modeling of the mandible.