Hydroxyapatite beads

Daglia, M. Tarsi, R. Papetti, A. Grisoli, R Dacarro, C. Pruzzo, C. Gazzani, G. Antiadhesive Effect of Green and Roasted Coffee on Streptococcus mutans Adhesive Properties on Saliva-Coated Hydroxyapatite Beads, j. Agric. Food Chem. 2002, 50, 1225-1229. 

Anti-adhesive effect. Green and roasted coffee, used in a treatment mixture and as a pretreatment on beads, inhibited the Strep tococcus mutans sucrose-independent adsorption to saliva-coated hydroxyapatite beads. The inhibition of Salmonelb mutans adsorption indicated that coffee-active molecules may adsorb to a host surface, preventing the tooth receptor from interacting with any bacterial adhesions. Among the known tested coffee components, trigonelline and nicotinic and chlorogenic acids are very... 

Neeser, J.R., Golliard, M., Woltz, A., Rouvet, M., Dillmann, M.L., and Guggenheim, B. 1994. In vitro modulation of oral bacterial adhesion to saliva-coated hydroxyapatite beads by milk casein derivatives. Oral Microbiol. Immunol. 9, 193-201. 

Aoyama, K., and Chiba, J. (1993). Separation of different molecular forms of mouse IgA and IgM monoclonal antibodies by high-performance liquid chromatography on spherical hydroxyapatite beads. J. Immunol. Methods 162, 201-210. 

Microcrystals of hydroxyapatite trapped within crosslinked agarose beads is the third presentation of commercially available hydroxyapatite. It does not create fines or problems of flow rate once in small and large columns, however, binding capacity is slightly diminished because of the presence of agarose matrix. 

Apamicron beads are of inorganic origin (hydroxyapatite) which have affinity to living organisms and are used in medical applications... 

Hydroxyapatite Hydroxyapatite, which has the formula of Cajo(P04)6 (0H)2, is widely used as a sorbent for hydrophobic interaction chromatography. Hydroxyapatite is an underivatized matrix with a specific inherent surface functionality. In the 1980s, it had been introduced as ceramic beaded material with good physical strength (Kato, Nakamura, and Hashimoto, 1987). The interactions of the surface phosphate and caldum-ions with the amino and carboxyl groups of proteins are complex and not fully understood. The elution of proteins is typically... 

Zhang, J. Wang, Q. Wang, A. In situ generation of sodium alginate/hydroxyapatite nanocomposite beads as drug-controlled release matrices. Acta. Biomater. 2010, 6 (2), 445-454. 

In suspension polymerization, inorganic solids such as hydroxyapatite [3 Ca3 (P04)2 Ca(OH)2] are often used in conjunction with (polymeric) surfactants. Des-landes [92] reported in 1987 a study in which he investigated the morphology of the beads obtained in the suspension copolymerization of styrene and butadiene. A thin layer composed of very uniformly distributed hydroxyapatite particles was adhered to the surface of the polymer bead, and surrounded by a thicker and flakier layer of loosely packed agglomerates of hydroxyapatite and small polymer beads, which were also covered by a monolayer of inorganic matter. Despite this paper, studies on the use of solid particles in suspension polymerization remained focused on their effective use as stabilizers. 

Human Enamel Beads (Calcium Hydroxyapatites) human serum albumin 1.2-3.3-10-7 [15]... 

Hydroxyapatite, Ca5(P04)3(0H), is the main mineral component of dental enamel, dentin, and bone, and thus has many medical uses. Coating it on metallic implants (such as titanium alloys and stainless steels) helps the body accept the implant. In the form of powder and beads, it is used to fill bone voids, which encourages natural bone to grow into the void. Hydroxyapatite is prepared by adding aqueous phosphoric acid to a dilute slurry of calcium hydroxide, (a) Write a balanced equation for this preparation. (b) What mass of hydroxyapatite could form from 100. g of 85% phosphoric acid and 100. g of calcium hydroxide ... 

Aluminium oxide Magnesium siUcates Hydroxyapatite Silica beads and monoUths Glass beads of controlled shape, size, and porosity... 

Current ceramic femoral components used in knee prostheses generally require bone cement to connect the implant to living bone. However, metal femoral components are available in cementless varieties which incorporate a plasma-spray hydroxyapatite (HA) coating or a porous bead coating on the fixation side to promote bone growth and avoid the potential adverse effects of bone cement, such as the hypersensitivity [6]. In addition, it is generally considered that hard bone cement particles released from the bone-prosthesis interface can increase the polyethylene wear significantly if they flow into the conjunction. Therefore, the lack of cementless fixation in ceramic knee prostheses has limited their use. 

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