A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fiber-enriched double-setting calcium phosphate bone cement
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.
Fiber-enriched double-setting calcium phosphate bone cement
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.
Fiber-enriched double-setting calcium phosphate bone cement
Santos, L.A. dos (author) / Carrodeguas, R.G. (author) / Boschi, A.O. (author) / Fonseca de Arruda, A.C. (author)
Journal of Biomedical Materials Research. Part A ; 65A ; 244-250
2003
7 Seiten, 6 Bilder, 17 Quellen
Article (Journal)
English
Effects of Setting Liquid on alpha-Calcium Phosphate-Tetracalcium Phosphate Bone Cement
| British Library Online Contents | 2007
Setting Behavior of Fast-Setting Calcium Phosphate Cement with Mineral Phase of Bone
| British Library Online Contents | 2005
Soluble phosphate salts as setting aids for premixed calcium phosphate bone cement pastes
| BASE | 2021
Self-Setting Biphase Porous Calcium Phosphate Cement
| British Library Online Contents | 2007