Tension-compression viscoelastic behaviors of the periodontal ligament
Although exhaustively studied, the mechanism responsible for tooth support and the mechanical properties of the periodontal ligament (PDL) remain a subject of considerable controversy. In the past, various experimental techniques and theoretical analyses have been employed to tackle this intricate p...
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| Format: | Article |
| Language: | English |
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Elsevier
2012-09-01
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| Series: | Journal of the Formosan Medical Association |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0929664612000496 |
| _version_ | 1811265560701304832 |
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| author | Chen-Ying Wang Ming-Zen Su Hao-Hueng Chang Yu-Chih Chiang Shao-Huan Tao Jung-Ho Cheng Lih-Jyh Fuh Chun-Pin Lin |
| author_facet | Chen-Ying Wang Ming-Zen Su Hao-Hueng Chang Yu-Chih Chiang Shao-Huan Tao Jung-Ho Cheng Lih-Jyh Fuh Chun-Pin Lin |
| author_sort | Chen-Ying Wang |
| collection | DOAJ |
| description | Although exhaustively studied, the mechanism responsible for tooth support and the mechanical properties of the periodontal ligament (PDL) remain a subject of considerable controversy. In the past, various experimental techniques and theoretical analyses have been employed to tackle this intricate problem. The aim of this study was to investigate the viscoelastic behaviors of the PDL using three-dimensional finite element analysis.
Methods: Three dentoalveolar complex models were established to simulate the tissue behaviors of the PDL: (1) deviatoric viscoelastic model; (2) volumetric viscoelastic model; and (3) tension-compression volumetric viscoelastic model. These modified models took into consideration the presence of tension and compression along the PDL during both loading and unloading. The inverse parameter identification process was developed to determine the mechanical properties of the PDL from the results of previously reported in vitro and in vivo experiments.
Results: The results suggest that the tension-compression volumetric viscoelastic model is a good approximation of normal PDL behavior during the loading-unloading process, and the deviatoric viscoelastic model is a good representation of how a damaged PDL behaves under loading conditions. Moreover, fluid appears to be the main creep source in the PDL.
Conclusion: We believe that the biomechanical properties of the PDL established via retrograde calculation in this study can lead to the construction of more accurate extra-oral models and a comprehensive understanding of the biomechanical behavior of the PDL. |
| first_indexed | 2024-04-12T20:25:49Z |
| format | Article |
| id | doaj.art-53670850eac44cc0af9baf9141d38820 |
| institution | Directory Open Access Journal |
| issn | 0929-6646 |
| language | English |
| last_indexed | 2024-04-12T20:25:49Z |
| publishDate | 2012-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of the Formosan Medical Association |
| spelling | doaj.art-53670850eac44cc0af9baf9141d388202022-12-22T03:17:52ZengElsevierJournal of the Formosan Medical Association0929-66462012-09-01111947148110.1016/j.jfma.2011.06.009Tension-compression viscoelastic behaviors of the periodontal ligamentChen-Ying Wang0Ming-Zen Su1Hao-Hueng Chang2Yu-Chih Chiang3Shao-Huan Tao4Jung-Ho Cheng5Lih-Jyh Fuh6Chun-Pin Lin7Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan, ROCGraduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan, ROCGraduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan, ROCGraduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan, ROCDepartment of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, ROCDepartment of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, ROCSchool of Dentistry & Graduate Institute of Dental Sciences, China Medical University, Taichung, Taiwan, ROCGraduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan, ROCAlthough exhaustively studied, the mechanism responsible for tooth support and the mechanical properties of the periodontal ligament (PDL) remain a subject of considerable controversy. In the past, various experimental techniques and theoretical analyses have been employed to tackle this intricate problem. The aim of this study was to investigate the viscoelastic behaviors of the PDL using three-dimensional finite element analysis. Methods: Three dentoalveolar complex models were established to simulate the tissue behaviors of the PDL: (1) deviatoric viscoelastic model; (2) volumetric viscoelastic model; and (3) tension-compression volumetric viscoelastic model. These modified models took into consideration the presence of tension and compression along the PDL during both loading and unloading. The inverse parameter identification process was developed to determine the mechanical properties of the PDL from the results of previously reported in vitro and in vivo experiments. Results: The results suggest that the tension-compression volumetric viscoelastic model is a good approximation of normal PDL behavior during the loading-unloading process, and the deviatoric viscoelastic model is a good representation of how a damaged PDL behaves under loading conditions. Moreover, fluid appears to be the main creep source in the PDL. Conclusion: We believe that the biomechanical properties of the PDL established via retrograde calculation in this study can lead to the construction of more accurate extra-oral models and a comprehensive understanding of the biomechanical behavior of the PDL.http://www.sciencedirect.com/science/article/pii/S0929664612000496creep sourcefinite element analysisperiodontal ligamentviscoelastic behavior |
| spellingShingle | Chen-Ying Wang Ming-Zen Su Hao-Hueng Chang Yu-Chih Chiang Shao-Huan Tao Jung-Ho Cheng Lih-Jyh Fuh Chun-Pin Lin Tension-compression viscoelastic behaviors of the periodontal ligament Journal of the Formosan Medical Association creep source finite element analysis periodontal ligament viscoelastic behavior |
| title | Tension-compression viscoelastic behaviors of the periodontal ligament |
| title_full | Tension-compression viscoelastic behaviors of the periodontal ligament |
| title_fullStr | Tension-compression viscoelastic behaviors of the periodontal ligament |
| title_full_unstemmed | Tension-compression viscoelastic behaviors of the periodontal ligament |
| title_short | Tension-compression viscoelastic behaviors of the periodontal ligament |
| title_sort | tension compression viscoelastic behaviors of the periodontal ligament |
| topic | creep source finite element analysis periodontal ligament viscoelastic behavior |
| url | http://www.sciencedirect.com/science/article/pii/S0929664612000496 |
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