Strength Analysis and Optimization Design of Dental Bone Screws

Results

       In this project, HyperMesh was used for CAE modeling, and OptiStruct was used as the solver. The biting force generated by the teeth was applied to the bone screw to calculate the stress level and determine whether material failure would occur.

       By applying optimization techniques for improved design, the ultimate load-carrying capacity of the dental screw was enhanced. After CAE-based design refinement, the stiffness strength of the bone screw was increased by more than 15%.

 

Illustration of bone screw structure CAE analysis results

Technical Highlights

• HyperMesh as the pre-processor can rapidly build models and generate the 3D meshes required for simulation. It also enables quick setup of contacts and material properties, as well as efficient handling of design changes.

• OptiStruct as the solver can simulate brittle material behavior, identify the stress distribution at failure, and perform topology optimization to improve the stiffness strength of the bone screw.

Extended Applications

       This case can be extended to simulation and design optimization of other medical implants that require high strength and precise design. Examples include artificial hip joints, spinal fusion devices, heart valve stents, dental implants, fracture fixation plates, artificial knee joints, and more. All of these can be virtually simulated in advance to identify the optimal design.