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Reinforcement strategies for load-bearing calcium phosphate biocements

Please always quote using this URN: urn:nbn:de:bvb:20-opus-148636
  • Calcium phosphate biocements based on calcium phosphate chemistry are well-established biomaterials for the repair of non-load bearing bone defects due to the brittle nature and low flexural strength of such cements. This article features reinforcement strategies of biocements based on various intrinsic or extrinsic material modifications to improve their strength and toughness. Altering particle size distribution in conjunction with using liquefiers reduces the amount of cement liquid necessary for cement paste preparation. This in turnCalcium phosphate biocements based on calcium phosphate chemistry are well-established biomaterials for the repair of non-load bearing bone defects due to the brittle nature and low flexural strength of such cements. This article features reinforcement strategies of biocements based on various intrinsic or extrinsic material modifications to improve their strength and toughness. Altering particle size distribution in conjunction with using liquefiers reduces the amount of cement liquid necessary for cement paste preparation. This in turn decreases cement porosity and increases the mechanical performance, but does not change the brittle nature of the cements. The use of fibers may lead to a reinforcement of the matrix with a toughness increase of up to two orders of magnitude, but restricts at the same time cement injection for minimal invasive application techniques. A novel promising approach is the concept of dual-setting cements, in which a second hydrogel phase is simultaneously formed during setting, leading to more ductile cement-hydrogel composites with largely unaffected application properties.show moreshow less

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Metadaten
Author: Martha Geffers, Jürgen Groll, Uwe Gbureck
URN:urn:nbn:de:bvb:20-opus-148636
Document Type:Journal article
Faculties:Medizinische Fakultät / Abteilung für Funktionswerkstoffe der Medizin und der Zahnheilkunde
Language:English
Parent Title (English):Materials
Year of Completion:2015
Volume:8
Pagenumber:2700-2717
Source:Materials 2015, 8, 2700-2717. DOI: 10.3390/ma8052700
DOI:https://doi.org/10.3390/ma8052700
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Tag:balloon kyphoplasty; bone cement; brushite cement; calcium phosphate cements; compressive strength; dihydrate cement; dual setting; fiber reinforcement; in vitro; mechanical properties; polyacrylic acid; porosity; synergistic reinforcement
Release Date:2018/11/15
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International