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BME 83 HW6 - Nigel Chou BME HW#6 1 a Tricalcium phosphate...

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Nigel Chou BME HW#6 a) Tricalcium phosphate biocompatible completely resorbable - will dissolve gradually in body environment and new bone will replace the absorbed material Has two polymorphs, the high temperature α-TCP and the more stable β-TCP phase Applications: Bone cement or bone fillers to promote tissue growth coating of bioinert metal alloys, bioresorbable polymeric substrates or composite structures b) Bioglass contains silicon, calcium and sodium oxides in addition to phosphorus oxides porous surface layer is a very favorable substrate for the re-growth of bone tissue. Is bioactive and bonds to living tissue Weak and brittle Applications: Bone replacement / synthetic bone grafts Middle ear, alveolar ridge maintenance implants and other non-load bearing conditions. Artificial vertebra. c) Alumina Highly resistant to corrosion (esp. within the human body) High degree of chemical inertness under physiological conditions
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