Dissolution of calcium-deficient hydroxyapatite synthesized at different conditions

Mavropoulos, Elena; Rossi, Alexandre M.; Rocha, Nilce C.C. da; Soares, G.A.; Moreira, Josino Costa; Moure, Gustavo T.

doi:10.1016/s1044-5803(03)00093-7

Cited by 69 publications

(33 citation statements)

References 9 publications

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“…This allows cellular adhesion and matrix deposition. CdHAP is more favorable as a bone implant compared to sHAP because it dissolves faster in aqueous environments [20,30]. CdHAP quickly forms a biomimetic layer of apatite on its surface which enables rapid bonding with bone [31].…”

Section: Discussionmentioning

confidence: 99%

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Biomimetic synthesis of calcium-deficient hydroxyapatite in a natural hydrogel

et al. 2006

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Section: Discussionmentioning

confidence: 99%

“…Hydrogen bonding also grants the cellulose high strength. Nishi et al [12] claimed that dried BC has the highest Young's modulus (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30) ever known in two-dimensional organic materials.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic synthesis of calcium-deficient hydroxyapatite in a natural hydrogel

et al. 2006

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“…Calcium hydroxyapatites are very thermally stable products; they are handled as harmless solids to the environment and not soluble in water 20 . HAP is one of the most important bioceramics for medical and dental application such as bone reconstruction and drug delivery systems 21,22 . Recently, HAP has been found to be applied in the adsorption of bacteria, virus, NOx and ammonia 23,24 .…”

Section: Introductionmentioning

confidence: 99%

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

et al. 2015

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Organic dyes and colouring textile agents are persistent pollutant materials that are difficult to decompose by microbiological treatment processes. Their oxidation through photocatalysis is an alternative way to prevent contamination of the environment. In this work, calcium deficient hydroxyapatite (HAP) was synthesized and doped with different amounts of titanium. Its performance in photocatalytic degradation of -methylene blue dye (MB) was then demonstrated. The main parameters which govern the photocatalytic treatment efficiency, such as doped titanium amount, pH, initial concentration of MB, weight of catalyst added to solution, UV-irradiation period and bubbling oxygen-have been-investigated. Photodegradation of MB is found to be effective with HAP/11 wt. %Ti in oxygenated medium. However, pH has no significant effect on the yield of discoloration.

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“…22 The quantification of calcium and phosphorus contents was obtained by ethylenediaminetetraacetic acid (EDTA) complexometry and molecular absorption spectrophotometry, respectively. 23 A Ca/P ratio of 1.58 Ϯ 0.02 was found.…”

Section: Methodsmentioning

confidence: 99%

Effects of surface undulations of biphasic calcium phosphate tablets on human osteoblast behavior

Santos¹,

Linhares²,

Rossi

et al. 2005

J Biomedical Materials Res

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In this work, the in vitro behavior of human osteoblast cells on the undulated surfaces of biphasic calcium phosphate tablets was investigated. The tablets were produced by uniaxial pressing with convex cylindrical undulations occupying only half of the surface area; the other half was flat. Chemical and physical characterization was performed by scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). XRD and FTIR analyses revealed the presence of hydroxyapatite (HA) and alpha-tricalcium phosphate (alpha-TCP) in a well-defined ratio. Moreover, microtopography, evaluated by SEM and AFM, was similar on the flat region and on that with undulations. However, surface undulations induced different cellular arrangements, confirming the influence of the macrotopography on the cells orientation.

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Dissolution of calcium-deficient hydroxyapatite synthesized at different conditions

Cited by 69 publications

References 9 publications

Biomimetic synthesis of calcium-deficient hydroxyapatite in a natural hydrogel

Biomimetic synthesis of calcium-deficient hydroxyapatite in a natural hydrogel

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

Effects of surface undulations of biphasic calcium phosphate tablets on human osteoblast behavior

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