Results 301 to 310 of about 49,661 (331)
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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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Brazilian Hydroxyapatite Implant
Ophthalmic Plastic and Reconstructive Surgery, 2000To evaluate a synthetic hydroxyapatite (HA) (manufactured in Brazil) in a rabbit model.Nine New Zealand white rabbits underwent enucleation of one eye followed by implantation of either a 12-mm Brazilian synthetic HA implant or a 12-mm BioEye, wrapped in polyglactin 910 mesh.
D R, Jordan +6 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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Hydroxyapatite crystal growth on calcium hydroxyapatite ceramics
Journal of Materials Science, 1988Calcium hydroxyapatite (Ca-HAP) ceramics containing tricalcium phosphate (TCP) were soaked in three solutions: phosphate buffer, tris buffer, and simulated body fluid (SBF). Petal-like crystals of Ca-HAP were deposited on the Ca-HAP ceramics when (i) Ca-HAP ceramics contained α-TCP, (ii) the soaking solution contained phosphate ion and (iii) the pH of ...
Masayuki Asada +4 more
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