Fracture toughness of titanium–cement interfaces: effects of fibers and loading angles

Fracture toughness of titanium–cement interfaces: effects of fibers and loading angles

Morshed Khandaker,1 Khatri Chhetri Utsaha,1 Tracy Morris21Department of Engineering and Physics, 2Department of Mathematics and Statistics, University of Central Oklahoma, Edmond, OK, USAAbstract: Ideal implant–cement or implant–bone interfaces are required for implant fixation...

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Autores principales: Khandaker M, Utsaha KC, Morris T
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2014
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Medicine (General)
R5-920
Acceso en línea:https://doaj.org/article/08b0bea49a3446ceb2e2b912fe174045
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spelling oai:doaj.org-article:08b0bea49a3446ceb2e2b912fe1740452021-12-02T00:28:02ZFracture toughness of titanium–cement interfaces: effects of fibers and loading angles1178-2013https://doaj.org/article/08b0bea49a3446ceb2e2b912fe1740452014-04-01T00:00:00Zhttp://www.dovepress.com/fracture-toughness-of-titaniumndashcement-interfaces-effects-of-fibers-a16302https://doaj.org/toc/1178-2013 Morshed Khandaker,1 Khatri Chhetri Utsaha,1 Tracy Morris21Department of Engineering and Physics, 2Department of Mathematics and Statistics, University of Central Oklahoma, Edmond, OK, USAAbstract: Ideal implant–cement or implant–bone interfaces are required for implant fixation and the filling of tissue defects created by disease. Micron- to nanosize osseointegrated features, such as surface roughness, fibers, porosity, and particles, have been fused with implants for improving the osseointegration of an implant with the host tissue in orthopedics and dentistry. The effects of fibers and loading angles on the interface fracture toughness of implant–cement specimens with and without fibers at the interface are not yet known. Such studies are important for the design of a long-lasting implant for orthopedic applications. The goal of this study was to improve the fracture toughness of an implant–cement interface by deposition of micron- to nanosize fibers on an implant surface. There were two objectives in the study: 1) to evaluate the influence of fibers on the fracture toughness of implant–cement interfaces with and without fibers at the interfaces, and 2) to evaluate the influence of loading angles on implant–cement interfaces with and without fibers at the interfaces. This study used titanium as the implant, poly(methyl methacrylate) (PMMA) as cement, and polycaprolactone (PCL) as fiber materials. An electrospinning unit was fabricated for the deposition of PCL unidirectional fibers on titanium (Ti) plates. The Evex tensile test stage was used to determine the interface fracture toughness (KC) of Ti–PMMA with and without PCL fibers at 0°, 45°, and 90° loading angles, referred to in this article as tension, mixed, and shear tests. The study did not find any significant interaction between fiber and loading angles (P>0.05), although there was a significant difference in the KC means of Ti–PMMA samples for the loading angles (P<0.05). The study also found a significant difference in the KC means of Ti–PMMA samples with and without fibers (P<0.05). The results showed that the addition of the micron- to nanosize PCL fibers on Ti improved the quality of the Ti–PMMA union. The results of the study are essential for fatigue testing and finite-element analysis of implant–cement interfaces to evaluate the performance of orthopedic and orthodontic implants.Keywords: titanium, cement, interface, PMMA, polycaprolactone, fracture toughness, orthopedics, orthodonticsKhandaker MUtsaha KCMorris TDove Medical PressarticleMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol 2014, Iss Issue 1, Pp 1689-1697 (2014)
institution DOAJ
collection DOAJ
language EN
topic Medicine (General)
R5-920
spellingShingle Medicine (General)
R5-920
Khandaker M
Utsaha KC
Morris T
Fracture toughness of titanium–cement interfaces: effects of fibers and loading angles
description Morshed Khandaker,1 Khatri Chhetri Utsaha,1 Tracy Morris21Department of Engineering and Physics, 2Department of Mathematics and Statistics, University of Central Oklahoma, Edmond, OK, USAAbstract: Ideal implant–cement or implant–bone interfaces are required for implant fixation and the filling of tissue defects created by disease. Micron- to nanosize osseointegrated features, such as surface roughness, fibers, porosity, and particles, have been fused with implants for improving the osseointegration of an implant with the host tissue in orthopedics and dentistry. The effects of fibers and loading angles on the interface fracture toughness of implant–cement specimens with and without fibers at the interface are not yet known. Such studies are important for the design of a long-lasting implant for orthopedic applications. The goal of this study was to improve the fracture toughness of an implant–cement interface by deposition of micron- to nanosize fibers on an implant surface. There were two objectives in the study: 1) to evaluate the influence of fibers on the fracture toughness of implant–cement interfaces with and without fibers at the interfaces, and 2) to evaluate the influence of loading angles on implant–cement interfaces with and without fibers at the interfaces. This study used titanium as the implant, poly(methyl methacrylate) (PMMA) as cement, and polycaprolactone (PCL) as fiber materials. An electrospinning unit was fabricated for the deposition of PCL unidirectional fibers on titanium (Ti) plates. The Evex tensile test stage was used to determine the interface fracture toughness (KC) of Ti–PMMA with and without PCL fibers at 0°, 45°, and 90° loading angles, referred to in this article as tension, mixed, and shear tests. The study did not find any significant interaction between fiber and loading angles (P>0.05), although there was a significant difference in the KC means of Ti–PMMA samples for the loading angles (P<0.05). The study also found a significant difference in the KC means of Ti–PMMA samples with and without fibers (P<0.05). The results showed that the addition of the micron- to nanosize PCL fibers on Ti improved the quality of the Ti–PMMA union. The results of the study are essential for fatigue testing and finite-element analysis of implant–cement interfaces to evaluate the performance of orthopedic and orthodontic implants.Keywords: titanium, cement, interface, PMMA, polycaprolactone, fracture toughness, orthopedics, orthodontics
format article
author Khandaker M
Utsaha KC
Morris T
author_facet Khandaker M
Utsaha KC
Morris T
author_sort Khandaker M
title Fracture toughness of titanium–cement interfaces: effects of fibers and loading angles
title_short Fracture toughness of titanium–cement interfaces: effects of fibers and loading angles
title_full Fracture toughness of titanium–cement interfaces: effects of fibers and loading angles
title_fullStr Fracture toughness of titanium–cement interfaces: effects of fibers and loading angles
title_full_unstemmed Fracture toughness of titanium–cement interfaces: effects of fibers and loading angles
title_sort fracture toughness of titanium–cement interfaces: effects of fibers and loading angles
publisher Dove Medical Press
publishDate 2014
url https://doaj.org/article/08b0bea49a3446ceb2e2b912fe174045
work_keys_str_mv AT khandakerm fracturetoughnessoftitaniumndashcementinterfaceseffectsoffibersandloadingangles
AT utsahakc fracturetoughnessoftitaniumndashcementinterfaceseffectsoffibersandloadingangles
AT morrist fracturetoughnessoftitaniumndashcementinterfaceseffectsoffibersandloadingangles
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