The sintering behavior of calcium pyrophosphate (CPP, Ca2P2O7)-doped beta-tricalcium phosphate [TCP, Ca3(PO4)2], prepared by solid state reaction, was investigated in-situ, using dilatometry. Pure beta-TCP undergoes phase transition to alpha-TCP at about 1200 degrees C; hence pure beta-TCP ceramics should be sintered bclow 1200 degrees C. Pure beta-TCP sintered body can achieve a relative densi...

One of the most important characteristics of calcium phosphate cements is their resorbability when implanted in the body. However, the in vivo resorption rate is slow due to the lack of intrinsic open porosity. In this study, macroporous structures were obtained by mixing alpha-tricalcium phosphate (α-TCP) cement with a foamed liquid phase containing different concentrations of sodium hydrogen ...

The combined effect of beta-tricalcium phosphate and basic fibroblast growth factor was observed in the regeneration of periodontal tissue in dogs. For this purpose, either beta-TCP and FGF-2 (beta-TCP/FGF-2 group) or FGF-2 alone (FGF-2 group) was applied in intrabony defects. The control group received beta-TCP alone. The tissues were histologically examined at 2, 4, or 8 weeks following treat...

Calcium phosphate cement (CPC) merupakan campuran dari cairan dan serbuk yang mengandung calcium phosphate. Kelebihan CPC dibandingkan dengan bone graft lain adalah dapat menyesuaikan defek tulang, mengeras pada in vivo, biokompatibel. Kekurangan kekuatan mekanik rendah. Reaksi setting mengerasnya dikarenakan adanya ikatan antar kristal apatite berpresipitasi. Cairan ion fosfat biasanya digunak...

The production of organic acids and changes during decomposition of rice straw amended with tricalcium phosphate (TCP) and Udaipur rock phosphate (URP) were studied under laboratory conditions. The organic C content of rice straw decreased and total N increased with time, resulting in a decrease in C:N ratio as the decomposition progressed. The pH decreased to acidic range in all the treatments...

There has been a resurgence of interest in alpha-tricalcium phosphate (α-TCP), with use in cements, polymer composites and in bi- and tri-phasic calcium phosphate bone grafts. The simplest and most established method for preparing α-TCP is the solid state reaction of monetite (CaHPO4) and calcium carbonate at high temperatures, followed by quenching. In this study, the effect of the chemical co...

Abstract Tricalcium phosphate (Ca 3 (PO 4 ) 2 , TCP), is one of the most studied and used as material for bioresorbable implants. The β phase has a slower dissolution dynamic ensures mechanical support longer time in biological environment, while faster release ions characterize α that trigger stronger response. In this work femtosecond laser system was to process β-TCP pellets surface. process...

Tricalcium phosphate (TCP)-based materials, such as ?-Ca3(PO4)2 doped with rare earth ions (RE), have shown applications biomaterials, lighting emitting scintillating in vivo imaging probes, and thermoluminescent dosimeters. Their properties are found to be dependent on the distribution of RE3+ Ca2+ sites that can controlled by pulsed electron paramagnetic resonance (EPR) spin echo envelop modu...

Biphasic calcium phosphate bioceramics composed of hydroxyapatite (HA) and β-tricalcium phosphate (β-TCP) have relevant properties as synthetic bone grafts, such as tunable resorption, bioactivity, and intrinsic osteoinduction. However, they have some limitations associated to their condition of high-temperature ceramics. In this work self-setting Biphasic Calcium Phosphate Cements (BCPCs) with...