Modelling of Porous Titanium and Understanding Its Mechanical Behavior Using Micro-Computed Tomography

Fractures of the maxillofacial region are prevalent in both developed and developing nations. Maxillofacial fractures primarily occur as a result of incidents such as car crashes, physical assaults, and attacks. Although using miniplates to treat maxillofacial fractures is a widely accepted practice, the challenge lies in selecting the appropriate miniplate size that is tailored to the specific dimensions of the fracture in each patient. The study aims to evaluate and determine the most suitable design between a 2-hole miniplate and a 4-hole miniplate for securing a fractured mandible, with the ultimate goal of creating a customized solution for each patient. A mandible model is chosen with a diagonal length of 82mm and created perpendicular fracture gaps measuring 1mm to 3mm on the left buccolingual section of the solid model. A 2-hole and a 4-hole miniplate are designed with different thicknesses (ranging from 1mm to 2mm) and gap distances (ranging from 6mm to 12mm). The miniplates were put together in a model of the mandible. To test their effectiveness, the combination of the mandible model and plates was subjected to various muscle forces, as well as the force of biting, using finite element analysis. At the mandible location, the four-hole miniplate implantation exhibits superior stabilization in comparison to the two-hole miniplate assembly. The miniplate's size and dimensions can be adjusted depending on the size of the fracture in the mandible, resulting in a patient-specific solution for the implantation of miniplate in the mandible.

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Determination of Optimum Design Parameters for Gyroid Scaffolds to Mimic a Real Bone-Like Condition In Vitro: A Fluid Structure Interaction Study

Gupta

Rana

Mondal³

2023

Journal of Engineering and Science in Medical Diagnostics and Therapy

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A suitable scaffold architecture is always desirable to get a biomimetic scaffold for bone tissue engineering. In this regard, a fluid structure interaction analysis was carried out on different Micro-CTs (µCTs) and gyroids to observe the in vitro mechanical responses due to fluid flow. Computational fluid dynamics method was used to evaluate the permeability and wall shear stress (WSS), followed by a finite element method to obtain the mechanical stress within scaffolds. Different types of gyroids were designed based on the number of unit cells and porosity, where porosity of gyroids was kept same as µCTs. The main objective of the study is to examine the variations of permeability, WSS and mechanical stress with respect to the number of unit cells and porosity for different gyroids and µCTs. Mechanical responses were also compared between gyroids and µCTs. The results of this study highlighted that permeability and WSS of µCTs came close to the gyroids with 8 unit cells but had significant differences in mechanical stress. The permeability of gyroids increased with the increase of porosity but decreased with the increase in number of unit cells. The opposite trend was shown in case of WSS within gyroids. This study will guide us in predicting an ideal scaffold for trabecular bone replacement.

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Modelling of Porous Titanium and Understanding Its Mechanical Behavior Using Micro-Computed Tomography

Cited by 4 publications

References 35 publications

Application of Machine Learning to Predict the Engineering Characteristics of Construction Material

Application of Machine Learning to Predict the Engineering Characteristics of Construction Material

Design and Development of Patient-Specific Miniplate for the Treatment of Maxillofacial Fractures—A Finite Element Study

Determination of Optimum Design Parameters for Gyroid Scaffolds to Mimic a Real Bone-Like Condition In Vitro: A Fluid Structure Interaction Study

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