Results 151 to 160 of about 1,106 (182)

Transformation of monetite to hydroxyapatite in bioactive coatings on titanium

Surface and Coatings Technology, 2001
Abstract Calcium phosphates have a wide range of pH stability, depending on their Ca/P ratio. Under physiological conditions (pH ≈7), the most stable calcium phosphate is hydroxyapatite, Ca 10 (PO 4 ) 6 (OH) 2 . Acidic calcium phosphates, like dicalcium phosphate, CaHPO 4 (monetite) and dicalcium phosphate dihydrate, CaHPO 4 ·2H 2 O (brushite), are ...
M.H. Prado Da Silva, J.H.C. Lima, G.A. Soares, C.N. Elias, M.C. de Andrade, S.M. Best, I.R. Gibson   +6 more
openaire   +1 more source

Development of nanosilica bonded monetite cement from egg shells

Materials Science and Engineering: C, 2015
This work represents further effort from our group in developing monetite based calcium phosphate cements (CPC). These cements start with a calcium phosphate powder (MW-CPC) that is manufactured using microwave irradiation. Due to the robustness of the cement production process, we report that the starting materials can be derived from egg shells, a ...
Huan, Zhou, Timothy J F, Luchini, Nariman Mansouri, Boroujeni, Anand K, Agarwal, Vijay K, Goel, Sarit B, Bhaduri   +5 more
openaire   +2 more sources

^{Hypoxia Biomimicry to Enhance Monetite Bone Defect Repair}

Tissue Engineering Part A, 2017
Tissue hypoxia is a critical driving force for angiogenic and osteogenic responses in bone regeneration and is, at least partly, under the control of the Hypoxia Inducible Factor-1α (HIF-1α) pathway. Recently, the widely used iron chelator deferoxamine (DFO) has been found to elevate HIF-1α levels independent of oxygen concentrations, thereby, creating
Justin, Drager, Jose Luis, Ramirez-GarciaLuna, Abhishek, Kumar, Uwe, Gbureck, Edward J, Harvey, Jake E, Barralet   +5 more
openaire   +2 more sources

Preparation and properties of tetracalcium phosphate–monetite biocement

Materials Letters, 2013
Abstract The tetracalcium phosphate–monetite cement mixture was prepared by reaction milling of tetracalcium phosphate with the orthophosphoric acid ethanol solution. The presence of nanomonetite phase caused significant lowering of the pH value in cement paste during hardening.
L. Medvecky, M. Giretova, T. Sopcak
openaire   +1 more source

Formation of monetite nanoparticles and nanofibers in reverse micelles

Journal of Materials Science, 2007
Reverse micelles solution of water and cyclohexane containing either cetyltrimethylammonium bromide (CTAB) or polyoxyethylene-8-dodecyl ether (C12E8) surfactants and n-pentanol as co-surfactant have been used as organized reaction microenvironments for monetite (dicalcium phosphate anhydrous, DCPA) precipitation.
Kun Wei, Chen Lai, Yingjun Wang
openaire   +1 more source

Structure and Properties of Ceramics Based on Monetite and Nanodispersed Silica

Powder Metallurgy and Metal Ceramics, 2015
Calcium–phosphate ceramics based on monetite and nanosized silica are produced by sintering at 500°C. It is established that phase changes and solid-phase reactions occur during sintering to form ceramics that contain β-calcium pyrophosphate (Ca2P2O7), calcium silicate (wollastonite, CaSiO3), and insignificant amount of β-tricalcium phosphate (Ca3(PO4 ...
O. Ye. Sych, N. D. Pinchuk, V. V. Pasichnyi, S. O. Ostapenko, A. V. Kotlyarchuk, G. B. Tovstonog, Ya. I. Yevich   +6 more
openaire   +1 more source

New polymorph of CaHPO4 (monetite): synthesis and crystal structure

Journal of Structural Chemistry, 2016
A novel form of anhydrous dicalcium phosphate CaHPO4 (monetite) is synthesized hydrothermally and characterized by single crystal X-ray diffraction. It crystallizes in the orthorhombic space group Ccm21 with a = 6.242(1) A, b = 6.994(2) A, c = 7.003(3) A, V = 305.73(16) A3 and it has four independent unit formulas in the unit cell (Z = 4).
N. Ouerfelli, M. F. Zid
openaire   +1 more source

Heterogeneous crystallization of calcium hydrogen phosphate anhydrous (monetite)

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2017
Abstract The crystal growth of monetite (CaHPO 4 , DCPA), the least stable calcium phosphate has been investigated by the seeded growth method from solutions supersaturated exclusively with respect to this phase alone. The kinetics of crystal growth was measured at constant supersaturation at 37° C, pH 6.0.
Eleni Mhla, Petros G. Koutsoukos
openaire   +1 more source

Monetite granules versus particulate autologous bone in bone regeneration

Annals of Anatomy - Anatomischer Anzeiger, 2015
The aim of this study was to test bone tissue response to monetite granules in comparison with intramembranous autologous bone graft in a rabbit calvaria critical size defect model.Novel monetite granules were synthesized by thermal conversion of set brushite cement. Eight female New Zealand rabbits were used for this study. Two identical 10mm diameter
Jesús, Torres, Iskandar, Tamimi, Jatsue, Cabrejos-Azama, Isabel, Tresguerres, Mohammad, Alkhraisat, Enrique, López-Cabarcos, Gonzalo, Hernández, Faleh, Tamimi   +7 more
openaire   +2 more sources

A Self-Setting, Monetite (CaHPO4) Cement for Skeletal Repair

2008
A low compressive strength (2 to 4 MPa) but very simple and inexpensive orthopedic CaHPO 4 cement was developed by using commercially available Ca(OH) 2 powders as the only starting powder component. The setting solution used was a special aqueous phosphoric acid (H 3 PO 4 ) solution, with a small amount of sodium hydrogen carbonate (NaHCO 3 ...
Tarang R. Desai, Sarit B. Bhaduri, A. Cuneyt Tas   +2 more
openaire   +1 more source