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Assessment of the Best FEA Failure Criteria (Part II): Investigation of the Biomechanical Behavior of Dental Pulp and Apical-Neuro-Vascular Bundle in Intact and Reduced Periodontium

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  • Radu Andrei Moga

    (Department of Cariology, Endodontics and Oral Pathology, School of Dental Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, Str. Motilor 33, 400001 Cluj-Napoca, Romania)

  • Stefan Marius Buru

    (Department of Structural Mechanics, School of Civil Engineering, Technical University of Cluj-Napoca, Str. Memorandumului 28, 400114 Cluj-Napoca, Romania)

  • Cristian Doru Olteanu

    (Department of Orthodontics, School of Dental Medicine, University of Medicine and Pharmacy Iuliu Hatieganu Cluj-Napoca, Str. Avram Iancu 31, 400083 Cluj-Napoca, Romania)

Abstract

The aim of this study was to biomechanically assess the behavior of apical neuro-vascular bundles (NVB) and dental pulp employing Tresca, Von Mises, Pressure, S1 and S3 failure criterions in a gradual periodontal breakdown under orthodontic movements. Additionally, it was to assess the accuracy of failure criteria, correlation with the maximum hydrostatic pressure (MHP), and the amount of force safe for reduced periodontium. Based on cone-beam computed tomography, 81 3D models of the second lower premolar were subjected to 0.5 N of intrusion, extrusion, rotation, tipping, and translation. A Finite Elements Analysis (FEA) was performed. In intact and reduced periodontium apical NVB, stress (predominant in all criteria) was significantly higher than dental pulp stress, but lower than MHP. VM and Tresca displayed identical results, with added pulpal stress in translation and rotation. S1, S3 and Pressure showed stress in the apical NVB area. 0.5 N seems safe up to 8 mm periodontal breakdown. A clear difference between failure criteria for dental pulp and apical NVB cannot be proved based only on the correlation quantitative results-MHP. Tresca and VM (adequate for ductile materials) showed equivalent results with the lowest amounts of stress. The employed failure criteria must be selected based on the type of material to be analyzed.

Suggested Citation

  • Radu Andrei Moga & Stefan Marius Buru & Cristian Doru Olteanu, 2022. "Assessment of the Best FEA Failure Criteria (Part II): Investigation of the Biomechanical Behavior of Dental Pulp and Apical-Neuro-Vascular Bundle in Intact and Reduced Periodontium," IJERPH, MDPI, vol. 19(23), pages 1-17, November.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:23:p:15635-:d:983184
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    References listed on IDEAS

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    1. Jianlei Wu & Yunfeng Liu & Dongcai Wang & Jianxing Zhang & Xingtao Dong & Xianfeng Jiang & Xu Xu, 2019. "Investigation of effective intrusion and extrusion force for maxillary canine using finite element analysis," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 22(16), pages 1294-1302, December.
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    Cited by:

    1. Radu Andrei Moga & Cristian Doru Olteanu & Botez Mircea Daniel & Stefan Marius Buru, 2023. "Finite Elements Analysis of Tooth—A Comparative Analysis of Multiple Failure Criteria," IJERPH, MDPI, vol. 20(5), pages 1-25, February.

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