Advanced Computational Methods in Bio-Mechanics

Qahtani, Waleed M. S. Al; El-Anwar, Mohamed I.

doi:10.3889/oamjms.2018.149

Cited by 4 publications

(3 citation statements)

References 13 publications

(19 reference statements)

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“…Nevertheless, finite element (FE) analysis (FEA) has made a significant contribution to the research and understanding of spinal mechanics. The effectiveness of spinal FEA has been confirmed in previous studies ( 8 , 9 ). During FEA, 3D-irregular geometry is constructed, and the non-uniform materials are arranged.…”

Section: Introductionsupporting

confidence: 72%

Stress analysis of the thoracolumbar junction in the process of backward fall: An experimental study and finite element analysis

Sun

Zhang

et al. 2021

Exp Ther Med

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The aim of the present study was to evaluate the biomechanical mechanism of injuries of the thoracolumbar junction by the methods of a backward fall simulation experiment and finite element (FE) analysis (FEA). In the backward fall simulation experiment, one volunteer was selected to obtain the contact force data of the sacrococcygeal region during a fall. Utilizing the fall data, the FEA simulation of the backward fall process was given to the trunk FE model to obtain the stress status of local bone structures of the thoracolumbar junction during the fall process. In the fall simulation test, the sacrococcygeal region of the volunteer landed first; the total impact time was 1.14±0.58 sec, and the impact force was up to 4,056±263 N. The stress of thoracic (T)11 was as high as 42 MPa, that of the posterior margin and the junction of T11 was as high as 70.67 MPa, and that of the inferior articular process and the superior articular process was as high as 128 MPa. The average stress of T12 and the anterior margin of lumbar 1 was 25 MPa, and that of the endplate was as high as 21.7 MPa, which was mostly distributed in the back of the endplate and the surrounding cortex. According to the data obtained from the fall experiment as the loading condition of the FE model, the backward fall process can be simulated to improve the accuracy of FEA results. In the process of backward fall, the front edge of the vertebral body and the root of vertebral arch in the thoracolumbar junction are stress concentration areas, which have a greater risk of injury.

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Section: Introductionsupporting

confidence: 72%

Stress analysis of the thoracolumbar junction in the process of backward fall: An experimental study and finite element analysis

Sun

Zhang

et al. 2021

Exp Ther Med

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“…Finite element analysis (FEA), as a numerical method, has been approved as a proficient way of providing qualitative and quantitative mathematical data of the biomechanics of different dental prostheses and their supporting structures [33][34][35][36][37]. The main advantage of FEA is the capability to work with complex situations (or defects) and creating their corre-sponding prostheses virtually without the need to get ethical approval [38].…”

Section: Introductionmentioning

confidence: 99%

Biomechanics in Removable Partial Dentures: A Literature Review of FEA-Based Studies

Mousa

Abdullah

Jamayet

et al. 2021

BioMed Research International

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The present study was aimed at reviewing the studies that used finite element analysis (FEA) to estimate the biomechanical stress arising in removable partial dentures (RPDs) and how to optimize it. A literature survey was conducted for the English full-text articles, which used only FEA to estimate the stress developed in RPDs from Jan 2000 to May 2021. In RPDs, the retaining and supporting structures are subjected to dynamic loads during insertion and removal of the prosthesis as well as during function. The majority of stresses in free-end saddle (FES) RPDs are concentrated in the shoulder of the clasp, the horizontal curvature of the gingival approaching clasp, and the part of the major connector next to terminal abutments. Clasps fabricated from flexible materials were beneficial to eliminate the stress in the abutment, while rigid materials were preferred for major connectors to eliminate the displacement of the prosthesis. In implant-assisted RPD, the implant receive the majority of the load, thereby reducing the stress on the abutment and reducing the displacement of the prosthesis. The amount of stress in the implant decreases with zero or minimal angulation, using long and wide implants, and when the implants are placed in the first molar area.

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“…It improves the understanding of the effect of many oral/ dental devices and materials. 29 Metal thickness greatly influences cracking strength and thus fatigue, deformation, and fracturing activity. The critical stress factor decreases as the thickness of the material is decreased.…”

Section: Discussionmentioning

confidence: 99%

Pediatric Stainless-Steel Crown Cementation Finite Element Study

et al. 2020

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Objective To study the effect of using different cement types under pediatric stainless-steel crown (SSC) around mandibular second primary molar using three-dimensional (3D) finite element analysis. Materials and Methods A 3D finite element model was built for pediatric mandibular molar by laser scanning of natural extracted tooth. Four types of cement (zinc phosphate, glass ionomer, resin-modified glass ionomer, and resin) of 200 μm layers thickness were tested under a stainless-steel crown of 130-μm thickness. Twelve case studies were reported within this research, as the applied load of 330 N was tested with three angulations: vertical, oblique at 45°, and laterally. Results Linear static stress analysis was performed. The resultant stresses and deformations' distribution patterns did not change with cement type, while the values were altered. All deformations and stresses were found within the normal range. Conclusions Analysis results indicated that using stiffer cement material increases tooth structure stresses and reduces crown body stresses and deformations, while bone was nearly insensitive to cement type.

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Advanced Computational Methods in Bio-Mechanics

Cited by 4 publications

References 13 publications

Stress analysis of the thoracolumbar junction in the process of backward fall: An experimental study and finite element analysis

Stress analysis of the thoracolumbar junction in the process of backward fall: An experimental study and finite element analysis

Biomechanics in Removable Partial Dentures: A Literature Review of FEA-Based Studies

Pediatric Stainless-Steel Crown Cementation Finite Element Study

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