scholarly journals Role of Finite Element Analysis in Oral and Maxillofacial Surgery - A Review

2021 ◽  
Vol 10 (27) ◽  
pp. 2024-2028
Author(s):  
Manish Anand ◽  
Shreya Panwar ◽  
Srestha Bisht
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Maxillofacial Surgery ◽  
Rapid Change ◽  
Biomechanical Properties ◽  
The Body ◽  
Future Research ◽  
Oral And Maxillofacial Surgery ◽  
Element Analysis ◽  
Craniomaxillofacial Trauma

BACKGROUND Maxillofacial surgeries vary from simple tooth extraction to maxillofacial reconstruction and rehabilitation. The intricate anatomy of the facial bones and complex vital structures surrounding them makes it challenging for the surgical teams to perform complex surgeries. With the rapid change in technology and modern advancement in virtual surgeries, there is a leap towards improvement in healthcare. To study biomechanical properties, it is imperative to include the principles of physical science in the field of medicine. In recent times, Finite element analysis (FEA) has become a useful tool to study the biomechanical properties of craniofacial structures under different mechanical parameters. Since the human structure's biomechanics is not possible to study on an experimental basis, finite element analysis has become an emerging tool to solve these complex biomechanical equations. The finite element method uses a numerical calculation of small heterogeneous geometry into the simple linear equation and predicts biomechanical responses towards each variation. Although used extensively in engineering, this method finds extensive use in the medical field, from planning surgeries to design external prosthesis. This method's most significant advantage includes studying a model outside the body, designing an idle surgical instrument and hardware, models that can be replicated based on user requirements, no ethical consideration needed, and print prosthesis that exactly resembles a typical anatomical structure. This method has certain limitations: high cost, technical flaws, and inability to replicate exact clinical conditions. This review article covers the current FEA scope in maxillofacial surgeries, steps in planning surgeries, advantages, disadvantages and the modifications needed to refine it for future research. KEYWORDS Finite Element Analysis, Craniomaxillofacial Trauma, Orthognathic Surgery, FEA

scholarly journals Application of Finite Element Analysis in Oral and Maxillofacial Surgery—A Literature Review

Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3063 ◽  
Author(s):  
Magdalena Lisiak-Myszke ◽  
Dawid Marciniak ◽  
Marek Bieliński ◽  
Hanna Sobczak ◽  
Łukasz Garbacewicz ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Maxillofacial Surgery ◽  
Parameter Analysis ◽  
Oral And Maxillofacial Surgery ◽  
Element Analysis ◽  
Reconstructive Operations ◽  
Long Time

In recent years in the field of biomechanics, the intensive development of various experimental methods has been observed. The implementation of virtual studies that for a long time have been successfully used in technical sciences also represents a new trend in dental engineering. Among these methods, finite element analysis (FEA) deserves special attention. FEA is a method used to analyze stresses and strains in complex mechanical systems. It enables the mathematical conversion and analysis of mechanical properties of a geometric object. Since the mechanical properties of the human skeleton cannot be examined in vivo, a discipline in which FEA has found particular application is oral and maxillofacial surgery. In this review we summarize the application of FEA in particular oral and maxillofacial fields such as traumatology, orthognathic surgery, reconstructive surgery and implantology presented in the current literature. Based on the available literature, we discuss the methodology and results of research where FEA has been used to understand the pathomechanism of fractures, identify optimal osteosynthesis methods, plan reconstructive operations and design intraosseous implants or osteosynthesis elements. As well as indicating the benefits of FEA in mechanical parameter analysis, we also point out the assumptions and simplifications that are commonly used. The understanding of FEA’s opportunities and advantages as well as its limitations and main flaws is crucial to fully exploit its potential.

Rigid-Plastic Finite Element Simulation of Cold Forging and Sheet Metal Forming by Eulerian Meshing Method

2014 ◽  
Vol 970 ◽  
pp. 177-184 ◽  
Author(s):  
Wen Chiet Cheong ◽  
Heng Keong Kam ◽  
Chan Chin Wang ◽  
Ying Pio Lim
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Large Deformation ◽  
Sheet Metal ◽  
Metal Forming ◽  
The Body ◽  
Cold Forging ◽  
Rigid Plastic ◽  
Element Analysis ◽  
Linear Solution

A computational technique of rigid-plastic finite element method by using the Eulerian meshing method was developed to deal with large deformation problem in metal forming by replacing the conventional way of applying complicated remeshing schemes when using the Lagrange’s elements. During metal forming process, a workpiece normally undergoes large deformation and causes severe distortion of elements in finite element analysis. The distorted element may lead to instability in numerical calculation and divergence of non-linear solution in finite element analysis. With Eulerian elements, the initial elements are generated to fix into a specified analytical region with particles implanted as markers to form the body of a workpiece. The particles are allowed to flow between the elements after each deformation step to show the deforming pattern of material. Four types of cold forging and sheet metal clinching were conducted to investigate the effectiveness of the presented method. The proposed method is found to be effective by comparing the results on dimension of the final product, material flow behaviour and punch load versus stroke obtained from simulation and experiment.

The Evaluation of Failure Pressure for Corrosion Defects Within Girth or Seam Weld in Transmission Pipelines

2004 ◽  
Author(s):  
Young-pyo Kim ◽  
Woo-sik Kim ◽  
Young-kwang Lee ◽  
Kyu-hwan Oh
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Limit Load ◽  
The Body ◽  
Element Analysis ◽  
Burst Test ◽  
Corrosion Defect ◽  
Seam Weld ◽  
Failure Assessment ◽  
Corrosion Defects

The failure assessment for corroded pipeline has been considered with the burst test and the finite element analysis. The burst tests were conducted on 762mm diameter, 17.5mm wall thickness and API 5L X65 pipe that contained specially manufactured rectangular corrosion defect. The failure pressures for corroded pipeline have been measured by burst testing and classified with respect to corrosion sizes and corroded regions — the body, the girth weld and the seam weld of pipe. Finite element analysis was carried out to derive failure criteria of corrosion defect within the body, the girth weld and the seam weld of the pipe. A series of finite element analyses were performed to obtain a limit load solution for corrosion defects on the basis of burst test. As a result, the criteria for failure assessment of corrosion defect within the body, the girth weld and the seam weld of API 5L X65 gas pipeline were proposed.

Finite Element Analysis of Buckling of Arteries With Aneurysms

2009 ◽  
Author(s):  
Avione Northcutt ◽  
Hai-Chao Han
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
The Body ◽  
Element Analysis ◽  
Arterial Tortuosity ◽  
Dangerous Condition ◽  
Cerebrovascular Symptoms

Tortuosity of arteries occurs when a normally straight artery starts to take on a twisted path. This is often referred to as tortuosity and kinking of arteries. This phenomenon occurs in arteries throughout the body including the aorta and cerebral [1, 2]. Arterial tortuosity is a potentially dangerous condition that can lead to cerebrovascular symptoms, ischemia, and stroke [3].

Finite Element Simulation for Forging Process Using Euler’s Fixed Meshing Method

2008 ◽  
Vol 575-578 ◽  
pp. 1139-1144 ◽  
Author(s):  
Chan Chin Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Large Deformation ◽  
The Body ◽  
Rigid Plastic ◽  
Element Analysis ◽  
Forging Process ◽  
Deformation Problem ◽  
Element Method

A simulator based on rigid-plastic finite element method is developed for simulating the plastic flow of material in forging processes. In the forging process likes backward extrusion, a workpiece normally undergoes large deformation around the tool corners that causes severe distortion of elements in finite element analysis. Since the distorted elements may induce instability of numerical calculation and divergence of nonlinear solution in finite element analysis, a computational technique of using the Euler’s fixed meshing method is proposed to deal with large deformation problem by replacing the conventional way of applying complicated remeshing schemes when using the Lagrange’s elements. With this method, the initial elements are generated to fix into a specified analytical region with particles implanted as markers to form the body of a workpiece. The particles are allowed to flow between the elements after each deformation step to show the deforming pattern of material. The proposed method is found to be effective in simulating complicated material flow inside die cavity which has many sharp edges, and also the extrusion of relatively slender parts like fins. In this paper, the formulation of rigid-plastic finite element method based on plasticity theory for slightly compressible material is introduced, and the advantages of the proposed method as compared to conventional one are discussed.

Model and Finite Element Analysis of a Bus Body

2012 ◽  
Vol 605-607 ◽  
pp. 596-599
Author(s):  
Feng Wang ◽  
Qin Man Fan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
The Body ◽  
Body Frame ◽  
Element Analysis ◽  
Maximum Deformation ◽  
Emergency Braking ◽  
Computing Platform ◽  
Bus Body ◽  
Stress And Deformation

ANSYS is used as the finite element computing platform to analysis a certain type of bus body frame under four load conditions of bending conditions, reversing conditions, the bending and torsion conditions and the emergency braking conditions. The constraints and load approach in the four conditions are given in this paper. A certain type of bus body skeleton program and the finite element analysis are conduct. The result shows that: (1) Bus body frame changing brings the re-distribution of the stress, making the overall stress and deformation of the body skeleton relatively uniform. (2) The improved program makes more than 250KG weight losing of the body frame and the changing location of the maximum deformation under the bending conditions. The maximum bending deform increased is only 8.92%.

Finite Element Analysis and Structure Design for Chassis of Aircraft Towbarless Tractor

2011 ◽  
Vol 328-330 ◽  
pp. 690-694
Author(s):  
Zhi Wei Xing ◽  
Yong Lv ◽  
Jun Hui Li
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Structure Design ◽  
The Body ◽  
Element Analysis ◽  
Future Design ◽  
Ground Support ◽  
Three Dimensional Modeling ◽  
Entire Vehicle

Aircraft tow-tractor is one of the absolutely necessary ground support equipments (GSE) in the airport. The chassis is the framework on which the body and working parts of the tow-tractor, what plays a significant role in a entire vehicle design. The endurance and rigidity of the chassis have a direct influence on the reliability and practicability. In this paper, a simplified model is established for the carriage of aircraft towbarless tractor on the three-dimensional modeling platform--Proe5.0, and then mechanical finite element analysis are proceeding by Ansys12.0. The results show that the chassis model is of a appropriate structure and the design coincides with actual requirements, the Stress Concentration at the joint between carriage and wheel-grip mechanism has been reduced substantially. All trial results have laid a foundation for future design of the entire tractor.

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