Results 161 to 170 of about 15,001 (205)

Characterization and in vitro evaluation of biphasic α-tricalcium phosphate/β-tricalcium phosphate cement

Materials Science and Engineering: C, 2017
Biphasic calcium phosphate consisting of hydroxyapatite (HA) and β-tricalcium phosphate(β-TCP) is an excellent bone substitute with controllable bioresorbability. Fabrication of biphasic calcium phosphate with self-setting ability is expected to enhance its potential application as bone substitute.
Takaaki Arahira, Michito Maruta, Shigeki Matsuya   +2 more
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Biodegradation of tricalcium phosphate ceramics by osteoclasts

Current Medical Science, 1998
Biodegradation of tricalcium phosphate (TCP) ceramics was observed through mixed culture of osteoclasts and TCP discs in vitro in this study. Osteoclasts were isolated from newborn SD rat's marrow of long bone and cultured on TCP discs. The culture terminated at the 48th h and 96th h respectively.
Q, Zheng, J, Du, Z, Xia, H, Zeng, S, Li, Y, Yan, F, Chen   +6 more
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Kinetics of Dissolution of β-Tricalcium Phosphate

Journal of Colloid and Interface Science, 1997
The rate of dissolution of beta-tricalcium phosphate (beta-Ca3 (PO4 )2 ; beta-TCP) has been measured in the solution system Ca(OH)2 -H3 PO4 -NaOH-HNO3 -H2 O. The effects of different parameters such as pH, temperature, time, and saturation have been investigated.
Bohner M, Lemaître J, Ring TA
openaire   +3 more sources

Tricalcium Phosphate and Osteogenin

Plastic and Reconstructive Surgery, 1995
The disadvantages of autogenous bone grafts has prompted a search for a dependable onlay bone graft substitute. A combination of tricalcium phosphate, a resorbable ceramic, and osteogenin, an osteoinductive protein, was evaluated as an onlay bone graft substitute in a rabbit calvarial model.
A S, Breitbart, D A, Staffenberg, C H, Thorne, P M, Glat, N S, Cunningham, A H, Reddi, J, Ricci, G, Steiner   +7 more
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Copper-substituted tricalcium phosphates

Doklady Chemistry, 2016
© 2016, Pleiades Publishing, Ltd.Copper-substituted tricalcium phosphates (CuTCP) with different copper contents were developed using precipitation of copper-containing amorphous calcium phosphates (ACP) from salt solutions followed by heat treatment. Porous CuTCP ceramic was obtained using negative replicas.
Fadeeva I., Gafurov M., Filippov Y., Davydova G., Savintseva I., Fomin A., Petrakova N., Antonova O., Akhmetov L., Gabbasov B., Izotov V., Orlinsky S., Barinov S.   +12 more
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Reactivity of α-tricalcium phosphate

Journal of Materials Science, 2002
The reactivity of α-tricalcium phosphate (α-TCP) in forming hydroxyapatite (HAp) at 37°C was investigated. The effects of synthesis route, HAp seeding and the presence of calcium salts on the mechanism and extent of HAp formation were examined by pH measurements and/or isothermal calorimetric analyses.
C. Durucan, P. W. Brown
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Conversion of amorphous tricalcium phosphate into apatitic tricalcium phosphate.

Calcified tissue international, 1983
Precipitated calcium orthophosphate, rapidly prepared in highly supersaturated solutions at pH 9-11, is an amorphous tricalcium orthophosphate (atomic ratio Ca/P = 3/2) of formula Ca9(PO4)6, nH2O. Kept wet at room temperature, this phosphate is hydrolyzed according to the reaction PO4(3-) + H2O leads to HPO4(2-) + OH-; a tricalcium orthophosphate ...
J C, Heughebaert, G, Montel
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Luminescence properties of tricalcium phosphate doped with dysprosium

Applied Radiation and Isotopes, 2020
Tricalcium phosphate having effective atomic number Zeff = 15.785, equivalent to that of bones was studied for its thermoluminescence (TL) and photoluminescence (PL) properties. Different samples with varied concentrations of the dopant Dy3+ (0.1, 0.2, 0.3, 0.4, 0.5, and 0.6 mol %) were synthesized by the chemical co-precipitation technique.
Chirag, Malik, Najdeep, Kaur, Birendra, Singh, Anant, Pandey   +3 more
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A New Form of Tricalcium Phosphate

Nature, 1958
WE have established that the α-form of tricalcium phosphate is not the highest-temperature form of this compound as hitherto believed1–3. At 1,430° C., the α-form inverts to the true highest-temperature polymorph, which is capable of forming an uninterrupted range of solid solutions with the α-form of dicalcium silicate.
R. W. NURSE, J. H. WELCH, W. GUTT
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The growth of octacalcium phosphate on beta tricalcium phosphate

Journal of Crystal Growth, 1983
The crystallization of calcium phosphate phases from metastable supersaturated solutions following seeding with well characterized tricalcium phosphate (β-TCP) solid has been studied at 37°C, using the constant composition method. The results confirm that at a pH of 6.00, it is impossible to precipitate β-TCP at ambient temperatures.
Jean-Claude Heughebaert, Stephen J. Zawacki, George H. Nancollas   +2 more
openaire   +1 more source