Results 171 to 180 of about 6,709 (223)

Dicalcium phosphate cements: Brushite and monetite

Acta Biomaterialia, 2012
Dicalcium phosphate cements were developed two decades ago and ever since there has been a substantial growth in research into improving their properties in order to satisfy the requirements needed for several clinical applications. The present paper presents an overview of the rapidly expanding research field of the two main dicalcium phosphate ...
Faleh Tamimi, Zeeshan Sheikh, jake e Barralet   +2 more
exaly   +3 more sources

Mechanical characterization of brushite and hydroxyapatite cements

Biomaterials, 2001
Compression, tension and torsion tests were designed and completed successfully on a brushite and a precipitated hydroxyapatite cement in moist condition. Elastic and strength properties were measured for these three loading cases. For each cement, the full set of strength data was fitted to an isotropic Tsai-Wu criterion and the associated ...
E, Charrière, S, Terrazzoni, C, Pittet, P H, Mordasini, M, Dutoit, J, Lemaître, P H, Zysset   +6 more
exaly   +3 more sources

In vitro ageing of brushite calcium phosphate cement

Biomaterials, 2003
In vivo studies investigating the use of brushite cements have demonstrated mixed results with one or more of dissolution, hydrolysis, fragmentation and long term stability being demonstrated. It has been suggested that sample volume, implant location, and species can affect in vivo behaviour.
Jonathan C Knowles, jake e Barralet
exaly   +3 more sources

Biologically mediated resorption of brushite cement in vitro

Biomaterials, 2006
A new calcium phosphate cement is reported, which sets to form a matrix consisting of brushite, dicalcium pyrophosphate dihydrate and an amorphous phase following the mixture of beta-tricalcium phosphate with an aqueous pyrophosphoric acid solution.
Liam M Grover, Uwe Gbureck, jake e Barralet   +2 more
exaly   +3 more sources

Proton mobilities in brushite and brushite/polymer composites

Solid State Ionics, 1997
Abstract This study reports various analyses of the proton activity in brushite CaHPO4·2H2O and monetite CaHPO4 considered as potential solid electrolytes in mineral/polymer composites. Volta battery devices are first used to control the migration paths of protonic species through phosphate pellets or brushite/polymer composites.
L Tortet, J.R Gavarri, G Nihoul, A.J Dianoux   +3 more
openaire   +1 more source

Magnesium substitution in brushite cements

Materials Science and Engineering: C, 2013
The use of magnesium-doped ceramics has been described to modify brushite cements and improve their biological behavior. However, few studies have analyzed the efficiency of this approach to induce magnesium substitution in brushite crystals. Mg-doped ceramics composed of Mg-substituted β-TCP, stanfieldite and/or farringtonite were reacted with primary
Mohammad Hamdan, Alkhraisat, Jatsue, Cabrejos-Azama, Carmen Rueda, Rodríguez, Luis Blanco, Jerez, Enrique López, Cabarcos   +4 more
openaire   +2 more sources

Thermal reactions of brushite cements

Journal of Biomedical Materials Research Part B: Applied Biomaterials, 2007
AbstractThe thermal reactions of a brushite cement made of β‐tricalcium phosphate (β‐TCP), monocalcium phosphate monohydrate (MCPM), and an aqueous solution were followed in situ with an isothermal calorimeter at 37°C. The investigated parameters were the β‐TCP/MCPM weight ratio, the liquid‐to‐powder ratio, the synthesis route and milling duration of ...
M, Bohner, U, Gbureck
openaire   +2 more sources

Clinical Implications of Brushite Calculi

Journal of Urology, 1991
The clinical history of 30 patients with a total of 46 proved brushite urinary calculi was reviewed. The patients were active metabolically with 87% having a history of multiple calculi. Of the brushite stones 61% appeared hyperdense on x-ray but they had no consistent shape.
L W, Klee, C G, Brito, J E, Lingeman
openaire   +2 more sources

Dual-setting brushite–silica gel cements

Acta Biomaterialia, 2015
The current study describes a dual-mechanism-setting cement that combines a brushite-forming cement paste with a second inorganic silica-based precursor. Materials were obtained by pre-hydrolyzing tetraethyl orthosilicate (TEOS) under acidic conditions following the addition of a calcium phosphate cement (CPC) powder mixed of β-tricalcium phosphate and
Martha, Geffers, Jake E, Barralet, Jürgen, Groll, Uwe, Gbureck   +3 more
openaire   +2 more sources

Experimental study of brushite precipitation

Journal of Crystal Growth, 2004
Abstract A systematic approach was developed for the synthesis of orthophosphates in the laboratory. A set of experiments was designed to investigate the influence of initial calcium and phosphorus concentration on the precipitated phase, nucleation pH and product size distribution at 25°C. Another goal was to characterize the precipitated phase. The
S.M Arifuzzaman, S Rohani
openaire   +2 more sources