title: Evaluation of dentinal fluid flow behaviours: a fluid-structure interaction simulation.
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.
authors.affiliation: a Department of Biomedical Engineering , College of Engineering, National Cheng Kung University , Tainan , Taiwan.
authors.forename: Kuo-Chih
authors.initials: KC
authors.lastname: Su
authors.forename: Shu-Fen
authors.initials: SF
authors.lastname: Chuang
authors.forename: Eddie Yin-Kwee
authors.initials: EY
authors.lastname: Ng
authors.forename: Chih-Han
authors.initials: CH
authors.lastname: Chang
mesh_terms: D000465:Algorithms; D001696:Biomechanical Phenomena; D003198:Computer Simulation; D019234:Dentinal Fluid / Q000737:chemistry*; D004867:Equipment Design; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional; D012212:Rheology; D013314:Stress, Mechanical; D014070:Tooth / Q000502:physiology*
keywords: computational fluid dynamics; dental biomechanics; dentinal fluid flow; finite element simulation; fluid-structure interaction