Synthetic Hydroxyapatite
Mostrando 1-12 de 47 artigos, teses e dissertações.
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1. REUSE OF COLLAGEN AND HYDROXYAPATITE FROM THE WASTE PROCESSING OF FISH TO PRODUCE POLYETHYLENE COMPOSITES
In recent years, the increase in the generation of waste (e.g., bones and skin) from the processing of fish-based food related to the increase in fish consumption and the accumulation of synthetic polymers in the environment are causing major environmental concerns. Hydroxyapatite (HA) extracted from the bones and collagen from the skin of fish processing re
Quím. Nova. Publicado em: 2020-02
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2. Comparison of subcutaneous inflammatory response to commercial and engineered zinc hydroxyapatite implants in rabbits
RESUMO A hidroxiapatita (HA) é amplamente utilizada como biomaterial para reparo ósseo e revestimento de próteses metálicas. As principais limitações dos atuais compostos comerciais de hidroxiapatita sintética incluem alto custo e menor disponibilidade, especialmente para fins de medicina veterinária. Além disso, acredita-se que a biocompatibilidade
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
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3. Kinetic Analysis of Lead Removal by Natural Hydroxyapatite from Aqueous Solution in High Concentration
The aim of this work was to study of the kinetic of Pb(II) sorption, in high lead concentration aqueous solution, by the natural hydroxyapatite (HA) and to verify whether there is a different behavior between natural and synthetic HA under different lead concentrations. Batch experiments were carried out using solutions with high lead concentration, with the
Mat. Res.. Publicado em: 30/09/2019
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4. RADIOACTIVE CEMENT OF PMMA AND HAP-Sm-153, Ho-166, OR RE-188 FOR BONE METASTASIS TREATMENT
RESUMO Polymethylmetacrylte (PMMA) é um composto utilizado na indústria e desde os anos 80's também tem sido empregado nas áreas odontológica e biomédica como constituinte de cimentos ósseos. A hydroxyapatite (HAp) é uma biocerâmica produzida naturalmente nos ossos. Esses dois componentes são constituintes fundamentais no preparo de cimentos ósseo
Acta ortop. bras.. Publicado em: 2019-02
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5. Obtaining hydroxyapatite with different precursors for application as a biomaterial
Resumo A hidroxiapatita (HAp) é um biomaterial cerâmico com ampla aplicação na regeneração óssea. Pode ser obtida por diferentes rotas e diferentes precursores. Neste estudo, a síntese da HAp foi realizada por precipitação e tratamento térmico subsequente utilizando diferentes precursores de cálcio: hidróxido de cálcio de origem sintética e ó
Cerâmica. Publicado em: 2019-01
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6. Comparative study between natural and synthetic Hydroxyapatite: structural, morphological and bioactivity properties
ABSTRACT In this work, a study of hydroxyapatite (HAp) powders obtained using both, porcine bones and chemical precursors was carried put. In the case of HAp obtained by means of porcine bones, physical processes as cooking, washing and milling were developed, for removing the organic material from the bones; after that, the powders were submitted to a therm
Matéria (Rio J.). Publicado em: 06/12/2018
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7. Electroflotation of precipitated phosphate from synthetic solution
ABSTRACT The phosphate recovery from a 20 mg L-1 Na2HPO4 solution through precipitation with Ca(OH)2 followed by electroflotation was evaluated. X-ray diffraction and particle size measurements indicated that the precipitates were a mixture of hydroxyapatite and calcium-deficient hydroxyapatite, with size ranging from 3 to 10 μm. Electroflotation with Na-ol
Braz. J. Chem. Eng.. Publicado em: 2017-07
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8. Effects of a buried magnetic field on cranial bone reconstruction in rats
ABSTRACT The understanding of bone repair phenomena is a fundamental part of dentistry and maxillofacial surgery. Objective The present study aimed to evaluate the influence of buried magnetic field stimulation on bone repair in rat calvaria after reconstruction with autogenous bone grafts, synthetic powdered hydroxyapatite, or allogeneic cartilage grafts,
J. Appl. Oral Sci.. Publicado em: 2016-04
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9. On the Formation of Hydroxyapatite Nano Crystals Prepared Using Cationic Surfactant
Being a major constituent of hard tissues found in humans, synthetic hydroxyapatite (HA) as a substitute to natural bone and teeth is gaining importance. In particular, nano hydroxyapatite is expected to impart considerably superior properties. The current research focuses on identification of mechanism of the formation of HA nano-crystals during its prepara
Mat. Res.. Publicado em: 2015-06
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10. Simultaneous incorporation of magnesium and carbonate in apatite: effect on physico-chemical properties
Synthetic apatites are widely used both in the dental and the orthopaedic fields due to their similarity in composition with the inorganic phase of hard tissues. Biologic apatites are not pure hydroxyapatite (HA), but are calcium-deficient apatites with magnesium and carbonate as minor but important substituents. The aim of the present study was to produce a
Mat. Res.. Publicado em: 02/04/2013
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11. Síntese e caracterização de biomateriais de fosfatos de cálcio a partir de conchas calcárias fossilizadas / Synthesis and characterization of biomaterials of calcium phosphate in from calcareous fossilized shells
Research has demonstrated in recent decades, that calcium phosphate bioceramics and nanocomposite with calcium phosphate matrix may be the new generation of biomaterials to use in the repair of defects and reconstruction of bone tissue. This can be explained by new microstructural and nanostructural characteristics, interconnected microporosity, surface area
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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12. XRD, AFM, IR and TGA study of nanostructured hydroxyapatite
In this work, the synthetic hydroxyapatite (HAP) was studied using different preparation routes to decrease the crystal size and to study the temperature effect on the HAP nano-sized hydroxyapatite crystallization. X-ray diffraction (XRD) analysis indicated that all samples were composed by crystalline and amorphous phases . The sample with greater quantity
Materials Research. Publicado em: 03/07/2012