Evaluation of dentinal fluid flow behaviours: a fluid-structure interaction simulation |
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| Authors: | Kuo-Chih Su Shu-Fen Chuang Eddie Yin-Kwee Ng |
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| Affiliation: | 1. Department of Biomedical Engineering, College of Engineering, National Cheng Kung University, Tainan, Taiwan;2. Department of Stomatology, Institute of Oral Medicine, College of Medicine and Hospital, National Cheng Kung University, Tainan, Taiwan;3. School of Mechanical and Aerospace Engineering, College of Engineering, Nanyang Technological University, Singapore, Singapore |
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| Abstract: | This study uses the fluid-structure interaction (FSI) method to investigate the fluid flow in dental pulp. First, the FSI method is used for the biomechanical simulation of dental intrapulpal responses during force loading (50, 100 and 150 N) on a tooth. The results are validated by comparison with experimental outcomes. Second, the FSI method is used to investigate an intact tooth subjected to a mechanical stimulus during loading at various loading rates. Force loading (0–100 N) is applied gradually to an intact tooth surface with loading rates of 125, 62.5, 25 and 12.5 N/s, respectively, and the fluid flow changes in the pulp are evaluated. FSI analysis is found to be suitable for examining intrapulpal biomechanics. An external force applied to a tooth with a low loading rate leads to a low fluid flow velocity in the pulp chamber, thus avoiding tooth pain. |
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| Keywords: | dental biomechanics dentinal fluid flow fluid-structure interaction computational fluid dynamics finite element simulation |
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