Thesis (M.Sc.) - Cairo University - National Institute of Laser Enhanced Sciences - Department of Laser Science and Interaction

As accidents increase the need to metal implants as a cure also increase, but these implants have many disadvantages such as: after a period of time it needs to be replaced due to corrosion and infection. Surfaces are treated to facilitate an intimate contact between bone and implant. So, the tissue response to an implant involves physical factors, depending on implant design, surface topography, surface charge density, surface free energy and chemical factors associated with the composition of the materials. So biocompatible ceramic materials such as calcium phosphate or hydroxyapatite have been used widely to coat these metal alloys. Hydroxyapatite nanoparticles [Ca10. (PO4)6. (OH)2] is the vital constituent present in bones and teeth. HAP is the most versatile material used for implantation purposes owing to their similarity with natural bone mineral and its ability to bond to bone

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