Results 161 to 170 of about 3,864 (208)

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 ...
Zeeshan Sheikh, Faleh Tamimi, Jake E. Barralet   +2 more
exaly   +3 more sources

Molecular level interactions in brushite-aminoacids composites

Materials Science and Engineering: C, 2017
The interaction of aminoacids (Glycine, Proline, Lysine) with brushite based bone cements has been investigated by several techniques (FTIR spectroscopy, Thermogravimetry-TG, Scanning Electron Microscopy-SEM, mechanical properties studies), with the aim to elucidate the properties of the resulting composite materials and the interaction occurring at ...
LAGAZZO, ALBERTO, BARBERIS, FABRIZIO, CARBONE, CRISTINA, RAMIS, GIANGUIDO, FINOCCHIO, ELISABETTA   +4 more
openaire   +3 more sources

Frozen delivery of brushite calcium phosphate cements

Acta Biomaterialia, 2008
Calcium phosphate cements typically harden following the combination of a calcium phosphate powder component with an aqueous solution to form a matrix consisting of hydroxyapatite or brushite. The mixing process can be very important to the mechanical properties exhibited by cement materials and consequently when used clinically, since they are usually
Liam M, Grover, Michael P, Hofmann, Uwe, Gbureck, Balamurgan, Kumarasami, Jake E, Barralet   +4 more
openaire   +3 more sources

Characterization of alginate-brushite in-situ hydrogel composites

Materials Science and Engineering: C, 2016
In the present study alginate-brushite composite hydrogels were in-situ synthetized and characterized with respect to preparation parameters. Specifically, the influence of initial pH value and initial concentration of phosphate precursor on the in-situ fabrication of the composite hydrogel were taken into account.
DABIRI, SEYED MOHAMMAD HOSSEIN, LAGAZZO, ALBERTO, BARBERIS, FABRIZIO, Farokhi, Mehdi, FINOCCHIO, ELISABETTA, PASTORINO, LAURA   +5 more
openaire   +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

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

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

Reinforcement of osteosynthesis screws with brushite cement

Bone, 1999
The fixation of osteosynthesis screws remains a severe problem for fracture repair among osteoporotic patients. Polymethyl-methacrylate (PMMA) is routinely used to improve screw fixation, but this material has well-known drawbacks such as monomer toxicity, exothermic polymerization, and nonresorbability.
Van Landuyt, P., Peter, P., Beluze, L., Lemaître, J.   +3 more
openaire   +3 more sources

Effect of albumin on brushite transformation to hydroxyapatite

Journal of Biomedical Materials Research, 2001
Brushite (CaHPO(4) x 2H(2)O) is a precursor to hydroxyapatite [HA, Ca(5)(PO(4))(3)OH]. It has been shown that a modified form of brushite, with potassium substituting for calcium at specific sites, demonstrated accelerated transformation to HA when exposed to nonproteinaceous Hanks' balanced aqueous salt solutions (HBSS).
J, Xie, C, Riley, K, Chittur
openaire   +2 more sources

Brushit in Harnsteinen

1978
Brushit (Ca HPO4· 2 H2 O) ist selten unter Harnsteinen anzutreffen. An 3000 Dunnschliffen von Harnsteinen haben wir nur 24 mal dieses Hydrogen-Calciumphosphatdihydrat gefunden (0,80%), und zwar 18 mal in Nieren- und Harnleitern und 5 mal in Blasensteinen. Das Vorhandensein von Brushit wurde in allen Fallen mit Hilfe der I.R. Spektroskopie bestatigt.
L. Cifuentes Delatte, J. Bellanato, M. Santos, A. Hidalgo   +3 more
openaire   +1 more source