AI Article Synopsis
- - Calcium phosphate bone cements are great for orthopedic use due to their biocompatibility and bioactivity, making them effective for bone healing, but they struggle with low mechanical strength and toughness compared to human bone.
- - This study focused on enhancing the mechanical properties of alpha-tricalcium phosphate-based cement by adding polypropylene, nylon, and carbon fibers, assessing how these additions affect the cement's performance.
- - While adding fibers decreased the cement's compression strength due to increased porosity, it significantly improved its toughness and tensile strength, suggesting potential applications in areas that experience bending forces.
Article Abstract
Calcium phosphate bone cements are useful in orthopedics and traumatology, their main advantages being their biocompatibility and bioactivity, which render bone tissue osteoconductive, providing in situ hardening and easy handling. However, their low mechanical strength, which, in the best of cases, is equal to the trabecular bone, and their very low toughness are disadvantages. Calcium phosphate cement compositions with mechanical properties more closely resembling those of human bone would broaden the range of applications, which is currently limited to sites subjected to low loads. This study investigated the influence of added polypropylene, nylon, and carbon fibers on the mechanical properties of double setting alpha-tricalcium phosphate-based cement, using calcium phosphate cement added to an in situ polymerizable acrylamide-based system recently developed by the authors. Although the addition of fibers was found to reduce the compression strength of the double-setting calcium phosphate cement because of increased porosity, it strongly increased the cement's toughness (J(IC)) and tensile strength. The composites developed in this work, therefore, have a potential application in shapes subjected to flexure.
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| http://dx.doi.org/10.1002/jbm.a.10474 | DOI Listing |
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