Results 241 to 250 of about 5,291 (294)
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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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Srapping Hydroxyapatite Implants
Ophthalmic Surgery, Lasers and Imaging Retina, 1999Abstract: Hydroxyapatite (HA) implants currently are most commonly wrapped in fresh unprocessed human donor sclera before implantation to facilitate entry into the orbital space and allow extraocular muscle attachment. Autologous temporalis fascia or autologous fascia lata are alternatives, but prolong surgery time and require a second operative site ...
D R, Jordan, S R, Klapper
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Thermoluminescence in hydroxyapatite
Medical Physics, 1979A thermoluminescent (TL) glow peak has been shown to exist at 80°C in synthetic hydroxyapatite, in amorphous calcium phosphate, and in deproteinated rat bone mineral. This TL glow peak is excited by a thermal pretreatment at elevated temperature, followed by exposure to ultraviolet (UV) light. When measured on a cylic TL‐readout UV‐exposure basis after
M R, Chapman, A G, Miller, T G, Stoebe
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Hydroxyapatite Chromatography (HAC)
2023Hydroxyapatite (HA) is a mixed-mode media that has been used extensively for the purification of proteins and DNA since the 1950s. Hydroxyapatite possesses a distinctive selectivity that may be applied in the purification of a wide range of biomolecules: immunoglobulins, alkaline proteins, acidic proteins, and DNA.
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Hydroxyapatite Prosthesis Extrusion
Otology & Neurotology, 2002To examine the mechanism of prosthesis extrusion and evaluate preoperative and postoperative variables associated with extrusion of hydroxyapatite prostheses for ossicular reconstruction.Retrospective case review.Tertiary referral, university medical center.Patients undergoing ossiculoplasty with a hydroxyapatite prosthesis and having at least six ...
Jeffrey T, Vrabec +2 more
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Chitosan–hydroxyapatite composites
Carbohydrate Polymers, 2013Bone repair or regeneration is a common and complicated clinical problem in orthopedic surgery. The importance of natural polymers such as chitosan and its derivatives, and minerals such as calcium phosphates has grown significantly over the last two decades due to its renewable and biodegradable source, increasing the knowledge and functionality of ...
Luciano, Pighinelli +1 more
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Calcium Hydroxyapatite Fillers
Facial Plastic Surgery, 2011Calcium hydroxyapatite fillers have unique advantages over other fillers in regards to duration of action and volume of product required for augmentation, especially in the midface and lower face. In this article, we describe our experience with calcium hydroxyapatite fillers and compare them with other available filler products.
Kristina, Tansavatdi, Devinder S, Mangat
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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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