PSI - Issue 25

Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000–000 Available online at www.sciencedirect.com ScienceDirect

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Procedia Structural Integrity 25 (2020) 8–12

1st Virtual Conference on Structural Integrity - VCSI1 Fracture Mechanism in Human Teeth A.M. Al-Mukhtar a,* a Biomedical Engineering Department, College of Engineering, University of Warith Alanbiyaa, Iraq 1st Virtual Conference on Structural Integrity - VCSI1 Fracture Mechanism in Human Teeth A.M. Al-Mukhtar a,* a Biomedical Engineering Department, College of Engineering, University of Warith Alanbiyaa, Iraq

© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the VCSI1 organizers © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the VCSI1 organizers teeth. Th vertical crack is a traditional path f the fracture. The crack ue to the cyclic load ng like chewi g will be propagated. The u derst nding of failure in teeth like another solid body, a ms t decrease the failure risk. In addition, gives an i sight for repairing treatments. H nc , early obs rvations of the cracks will r tect he teeth. Due to the brittleness of enamel and a littl toughnes of dentin, the den in-enamel argins resist the crack propagation due to their fracture toughness and the cohesive properties. The crack path in teeth was simulated using the finite element software (FE). © 2020 The Authors. Published by Elsevier B.V. This is an ope acces article under C BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Abstract Materials’ cracking is a first step of the fracture. Enamel and dentin like other materials suffering from the cracks. During life or even through the denture treatments, the damage can be started. In this work, the crack path and fracture behavior of the teeth have been monitored. It was shown that the linear elastic fracture mechanics approach (LEFM) could evaluate the fracture toughness in teeth. The vertical crack is a traditional path of the fracture. The crack due to the cyclic loading like chewing will be propagated. The understanding of failure in teeth like another solid body, aims to decrease the failure risk. In addition, gives an insight for repairing treatments. Hence, early observations of the cracks will protect the teeth. Due to the brittleness of enamel and a little toughness of dentin, the dentin-enamel margins resist the crack propagation due to their fracture toughness and the cohesive properties. The crack path in teeth was simulated using the finite element software (FE). Abstract Materials’ cracking is a fi st step of fr ctur . E amel nd de tin like other materials suffering from the cracks. During life or ev through the denture treatments, the d mage can be started. In this work, the crack path an fract re be avior of the teeth have been monitored. It w s shown tha the inear elastic mechani s appr ac (LEFM) could evaluat the fracture toughness in 1. Fracture in Teeth The presence of the cracks reduces significantly the performance of teeth. The non-connected, and ligament fracture behavior is observed in the materials like bone and teeth. Like other materials, the crack already existed in bones (Al Mukhtar and Könke 2013). To find the accurate crack path, FE simulation as based on LEFM is proposed. LEFM approach properties are familiar to be assumed in this matter, see Refs. (A.M. Al-Mukhtar 2011; A. Al-Mukhtar et al. 2009, 2010; A. M. Al-Mukhtar et al. 2009, 2010; Al-Mukhtar 2014, 2017; Al-Mukhtar and Merkel 2015). 1. Fracture in Teeth The presenc of the cracks reduces significantly the performanc of te th. The non-connecte , and ligament fracture behavio is observed in the materials like bone and teeth. Like other materials, the crack already existed in bones (Al Mukhtar and Könke 2013). To find the accurate crack path, FE simulation as based on LEFM is proposed. LEFM approach properties are familiar to be assumed in this matter, see Refs. (A.M. Al-Mukht r 2011; A. Al-Mukhtar et al. 2009, 2010; A. M. Al-Mukhtar et al. 2009, 2010; Al-Mukhtar 2014, 2017; Al-Mukhtar and Merkel 2015). Peer-review under responsibility of the VCSI1 organizers Keywords: Fracture; Fracture Mechanics; Crack, Biomechanics; Dentin; Teeth; Linear elastic Keywords: Fracture; Fracture Mechanics; Crack, Biomechanics; Dentin; Teeth; Linear elastic

* Corresponding author, E-mail address: ahmed.almukhtar@uowa.edu.iq * Corresponding author, E-mail address: ahmed.almukhtar@uowa.edu.iq

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the VCSI1 organizers 2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an ope acces article under C BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Peer-review under responsibility of the VCSI1 organizers

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the VCSI1 organizers 10.1016/j.prostr.2020.04.003