Thin Calcium Phosphate Coatings for Medical Implants
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This book presents for the first time, the scattered novel results that have been achieved in very recent years in study on various thin calcium phosphate coatings produced by very diverse techniques. The comparison of thin calcium phosphate coatings with the thick plasma-sprayed ones is also included in the book. Readers will find a comprehensive book reviewing the state-of-the-art of the field with critical assessment of the achievements of the different preparation techniques.
Calcium phosphate coatings ( 50 mm thick), especially those made with hyd- xyapatite (HA), produced by the plasma-spraying process have been succe- fully used on orthopedic and dental implants to improve fixation of these implants in bone. Thin calcium phosphate coatings ( 10mm thick) formed by various techniques other than plasma spraying may be the successor of the current thick plasma-sprayed coatings because of their improved properties. Like plasma-sprayed HA coatings, these alternative calcium phosphate thin coatings are capable of enabling bone formation on their surfaces and forming a bond with the newly formed bone. In addition, the thin calcium phosphate coatings have shown better adhesion to substrates and are more stable in the biological environment because they have more uniform structure and com- sition than plasma-sprayed HA coatings. Moreover, some of these thin calcium phosphate coatings can be formed on all kinds of substrates including polymers and on the entire surfaces of complex geometries such as porous surfaces.
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