Results 211 to 220 of about 69,158 (259)
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Hydroxyapatite and Hydroxyapatite-Based Ceramics
Inorganic Materials, 2002Data are summarized on the synthesis of hydroxyapatite (HA) by wet-chemical processes, solid-state reactions, and hydrothermal treatment. The conditions for HA preparation via precipitation from solutions of calcium chloride, dibasic ammonium phosphate, and aqueous ammonia are discussed at length.
V. P. Orlovskii +2 more
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Comparison of hydroxyapatite and hydroxyapatite tricalcium-phosphate coatings
The Journal of Arthroplasty, 2002This study compared the effects of hydroxyapatite (HA) coating and biphasic HA/tricalcium-phosphate (HA/TCP) coating on the osseointegration of grit-blasted titanium-alloy implants. Each coated implant was compared with uncoated grit-blasted implants as well.
Tetsuya, Jinno +2 more
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Nanofiber generation of hydroxyapatite and fluor‐hydroxyapatite bioceramics
Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2005AbstractIn this study, we produced hydroxyapatite (HA) and fluor‐hydroxyapatite (FHA) bioceramics as a novel geometrical form, the nanoscale fiber, for the biomedical applications. Based on the sol‐gel precursors of the apatites, an electrospinning technique was introduced to generate nanoscale fibers.
Hae-Won, Kim, Hyoun-Ee, Kim
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Orthopedics, 1994
ABSTRACTA series of investigations over the past several years has evaluated a number of implant materials with and without plasma-sprayed hydroxyapatite (HA) coatings for use in load-bearing implant applications. HA-coated implants have exhibited greater interface shear attachment characteristics when compared to uncoated implants; these results have ...
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ABSTRACTA series of investigations over the past several years has evaluated a number of implant materials with and without plasma-sprayed hydroxyapatite (HA) coatings for use in load-bearing implant applications. HA-coated implants have exhibited greater interface shear attachment characteristics when compared to uncoated implants; these results have ...
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Clinical Orthopaedics and Related Research, 1988
Significant interest for orthopedic surgical applications of hydroxyapatite compounds is based on a number of reasons including the elemental chemistry of the primarily calcium and phosphate ion substances, the controllability of the crystalline and physical structures to provide a wide range of in vivo interactions, the existing literature on ...
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Significant interest for orthopedic surgical applications of hydroxyapatite compounds is based on a number of reasons including the elemental chemistry of the primarily calcium and phosphate ion substances, the controllability of the crystalline and physical structures to provide a wide range of in vivo interactions, the existing literature on ...
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Annals of the New York Academy of Sciences, 1988
Four coating techniques were evaluated to determine which is most suitable for producing a dense, highly adherent coating onto metallic and ceramic implant materials. Two of the selected coating methods have serious limitations for use in this particular application, and did not meet the specified criteria for satisfactory coating as defined in the ...
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Four coating techniques were evaluated to determine which is most suitable for producing a dense, highly adherent coating onto metallic and ceramic implant materials. Two of the selected coating methods have serious limitations for use in this particular application, and did not meet the specified criteria for satisfactory coating as defined in the ...
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Comparison of the Weibull characteristics of hydroxyapatite and strontium doped hydroxyapatite
Journal of the Mechanical Behavior of Biomedical Materials, 2013The effects of two strontium (Sr) additions, 5% and 10% of the total calcium (Ca) content, on the phase assemblage and Weibull statistics of hydroxyapatite (HA) are investigated and compared to those of undoped HA. Sintering was carried out in the range of 900-1200 °C in steps of 1000 °C in a conventional furnace.
Chokchai, Yatongchai +4 more
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Laser surface modification of hydroxyapatite and glass-reinforced hydroxyapatite
Biomaterials, 2004Surface treatment of materials with excimer laser radiation often results in the formation of a rough columnar or cone-shaped surface topography, which leads to a considerable increase in the surface area. As a result, the search for a non-porous bioactive material with adequate mechanical properties and a high surface to volume ratio, similar to ...
Ana C, Queiroz +4 more
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Processing and mechanical properties of hydroxyapatite reinforced with hydroxyapatite whiskers
Biomaterials, 1996Hydrothermally synthesized HAp fine crystals/HAp whiskers mixtures have been used for the preparation of HAp/0-30% (whiskers) composites. The composites have been fabricated by pressureless sintering and hot-pressing. The best mechanical properties and the highest densities have been achieved for composites hot pressed at 1000 degrees C (2 h, 30 MPa in
Wojciech SUCHANEK +3 more
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