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Compressive fatigue...
Compressive fatigue properties of an acidic calcium phosphate cement—effect of phase composition
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- Ajaxon, Ingrid (author)
- Uppsala universitet,Tillämpad materialvetenskap,Materials in Medicine
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- Öhman Mägi, Caroline (author)
- Uppsala universitet,Tillämpad materialvetenskap,Materials in Medicine
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- Persson, Cecilia (author)
- Uppsala universitet,Tillämpad materialvetenskap,Materials in Medicine
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(creator_code:org_t)
- 2017-01-31
- 2017
- English.
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In: Journal of materials science. Materials in medicine. - : Springer Science and Business Media LLC. - 0957-4530 .- 1573-4838. ; 28:3
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Abstract
Subject headings
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- Calcium phosphate cements (CPCs) are synthetic bone grafting materials that can be used in fracture stabilization and to fill bone voids after, e.g., bone tumour excision. Currently there are several calcium phosphate-based formulations available, but their use is partly limited by a lack of knowledge of their mechanical properties, in particular their resistance to mechanical loading over longer periods of time. Furthermore, depending on, e.g., setting conditions, the end product of acidic CPCs may be mainly brushite or monetite, which have been found to behave differently under quasi-static loading. The objectives of this study were to evaluate the compressive fatigue properties of acidic CPCs, as well as the effect of phase composition on these properties. Hence, brushite cements stored for different lengths of time and with different amounts of monetite were investigated under quasi-static and dynamic compression. Both storage and brushite-to-monetite phase transformation was found to have a pronounced effect both on quasi-static compressive strength and fatigue performance of the cements, whereby a substantial phase transformation gave rise to a lower mechanical resistance. The brushite cements investigated in this study had the potential to survive 5 million cycles at a maximum compressive stress of 13 MPa. Given the limited amount of published data on fatigue properties of CPCs, this study provides an important insight into the compressive fatigue behaviour of such materials.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Keramteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Ceramics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk material- och protesteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Materials (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Biomaterialvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Biomaterials Science (hsv//eng)
Keyword
- Bone cement
- brushite
- monetite
- fatigue
- mechanical properties
- Engineering Science with specialization in Materials Science
- Teknisk fysik med inriktning mot materialvetenskap
Publication and Content Type
- ref (subject category)
- art (subject category)
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