• Tricalcium phosphate (sometimes abbreviated TCP), more commonly known as Calcium phosphate, is a calcium salt of phosphoric acid with the chemical formula Ca3(PO4)2. (wikipedia.org)
  • Most commercial samples of "tricalcium phosphate" are in fact hydroxyapatite. (wikipedia.org)
  • Much of the "tricalcium phosphate" on the market is actually powdered hydroxyapatite. (wikipedia.org)
  • Tricalcium phosphate is produced commercially by treating hydroxyapatite with phosphoric acid and slaked lime. (wikipedia.org)
  • The precipitate will either be "amorphous tricalcium phosphate", ATCP, or calcium deficient hydroxyapatite, CDHA, Ca9(HPO4)(PO4)5(OH), (note CDHA is sometimes termed apatitic calcium triphosphate). (wikipedia.org)
  • Crystalline tricalcium phosphate can be obtained by calcining the precipitate. (wikipedia.org)
  • β-Tricalcium phosphate has a crystallographic density of 3.066 g cm−3 while the high temperature forms are less dense, α-tricalcium phosphate has a density of 2.866 g cm−3 and α′-tricalcium phosphate has a density of 2.702 g cm−3 All forms have complex structures consisting of tetrahedral phosphate centers linked through oxygen to the calcium ions. (wikipedia.org)
  • Tricalcium phosphate occurs naturally in several forms, including: as a rock in Morocco, Israel, Philippines, Egypt, and Kola (Russia) and in smaller quantities in some other countries. (wikipedia.org)
  • Biphasic calcium phosphate, BCP, was originally reported as tricalcium phosphate, but X-Ray diffraction techniques showed that the material was an intimate mixture of two phases, hydroxyapatite (HA) and β-tricalcium phosphate. (wikipedia.org)
  • Tricalcium phosphate is used in powdered spices as an anticaking agent, e.g. to prevent table salt from caking. (wikipedia.org)
  • Bone substrates like hydroxyapatite and tricalcium phosphate have been widely used for promoting spinal fusion and reducing the complications caused by autograft. (biomedcentral.com)
  • In this study, we compared the osteoinductivity of whitlockite, hydroxyapatite, and tricalcium phosphate porous particles with SD rat spine posterolateral fusion model and investigated whether whitlockite could induce ectopic ossification with SD rat abdominal pouch model. (biomedcentral.com)
  • The micro-CT result from the posterolateral fusion model showed whitlockite had slightly but significantly higher percent bone volume than tricalcium phosphate, though none of the materials formed successful fusion with surrounding bone tissue. (biomedcentral.com)
  • Whitlockite had a potential of being a better bone substrate hydroxyapatite and tricalcium phosphate in spinal fusion with low risk of inducing ectopic ossification. (biomedcentral.com)
  • For example, tricalcium phosphate (TCP) has a high mineral content and low cold solubility (0.02%), but α-TCP decomposes to hydroxyapatite in hot water (80-100°C). Standard oat milk is around neutral pH, and heat processing is a short time, so the solubility of the mineral remains intact. (hawkinswatts.com)
  • However, if adding to a hot beverage or developing a high acid, shelf-stable beverage such as a fruit or coffee flavour, this will increase the solubility of the tricalcium phosphate, releasing more free mineral ions in the system and allowing adverse interactions. (hawkinswatts.com)
  • Such HAP powders decomposed thermally to α-tricalcium phosphate (α-TCP : Ca 3 (PO 4 ) 2 ) at 800 °C in 3 hours whereas HAP powders with sufficient calcium were stable at 1200 °C for 3 hours. (elsevierpure.com)
  • A systematic evaluation of mechanical and biocompatibility properties of different volume fractions of hydroxyapatite whiskers in comparison with three commercial dental composites filled with micro- and nanosilica particles was carried out. (hindawi.com)
  • Six groups with different hydroxyapatite whiskers mass fractions were taken into account in order to be compared with the performances of silica particles based composites group. (hindawi.com)
  • Data obtained show better interfacial interaction with filler/matrix until 20 wt% of hydroxyapatite whiskers partially replaced silica particles filler. (hindawi.com)
  • For this reason, in the recent five years hydroxyapatite particles and whiskers have been added as novel bioactive and biocompatible reinforcing filler in dental restorations. (hindawi.com)
  • This information is of primary interest in order to achieve a final consistency and specific formulation of hydroxyapatite whiskers mixed with silica particles filler in resin composite. (hindawi.com)
  • In particular, six different ratios of hydroxyapatite/silica particles were investigated. (hindawi.com)
  • With this aim, different mass fraction of hydroxyapatite based composites and three commercial composites loaded with silica particles were tested and compared in order to verify the effective enhancement in both biocompatibility and mechanical properties. (hindawi.com)
  • The present study evaluates the synthesis of biocompatible osteoconductive and osteoinductive nano calcium phosphate (CaP) particles by industrially applied, aerosol-derived flame spray pyrolysis method for biomedical field. (metu.edu.tr)
  • Calcium phosphate nanoparticles were produced in a range of calcium-to-phosphorus ratio, (1.20-2.19) in order to analyze the morphology and crystallinity changes, and to test the bioactivity of particles. (metu.edu.tr)
  • The characterization results confirmed that nanometer-sized, spherical calcium phosphate particles were produced. (metu.edu.tr)
  • XRD patterns, HRTEM, SAED, and SEM analyses revealed the amorphous nature of the asprepared nano calcium phosphate particles at low Ca/P ratios. (metu.edu.tr)
  • These powdered particles that get condensed upon the surface of the substrate ultimately fuse together to form a thin film over the implant surface. (com.pk)
  • The findings suggest that calcium phosphate nanoparticles produced in this work have a potential to be used as biomaterials in biomedical applications. (metu.edu.tr)
  • Synthesis of Hybrid Polyphenol/Hydroxyapatite Nanomaterials with Anti-Radical Properties. (upmc.fr)
  • This means the amount of dicalcium phosphate required is higher to achieve the same dosage of calcium in the final product. (hawkinswatts.com)
  • An example is: Ca10−δ(PO4)6−δ(HPO4)δ(OH)2−δ → (1−δ) Ca10(PO4)6(OH)2 + 3δ Ca3(PO4)2 β-TCP can contain impurities, for example calcium pyrophosphate, CaP2O7 and apatite. (wikipedia.org)
  • article{osti_1543698, title = {Effects of Controlled Crystalline Surface of Hydroxyapatite on Methane Oxidation Reactions}, author = {Oh, Su Cheun and Xu, Jiayi and Tran, Dat T. and Liu, Bin and Liu, Dongxia}, abstractNote = {Hydroxyapatite (HAP, Ca10(PO4)6(OH)2) has a hexagonal prismatic structure that exposes two crystalline surfaces: prism-faceted a- and basal-faceted c-surfaces. (osti.gov)
  • Calcium phosphate refers to numerous materials consisting of calcium ions (Ca2+) together with orthophosphates (PO3− 4), metaphosphates or pyrophosphates (P 2O4− 7) and occasionally oxide and hydroxide ions. (wikipedia.org)
  • it is hydroxyapatite if the extra ion is mainly hydroxide. (wikipedia.org)
  • The biphasic calcium sulfate overcomes its predecessors by providing moldability and cementability properties even in the harsh environment of blood and saliva. (bauersmiles.com)
  • The idea behind the development of biphasic calcium sulfate was to avoid adding any additives, polymers, or accelerators in order not to change or interfere with the purity of the material and its efficient and known clinical characteristics. (bauersmiles.com)
  • This paper discusses the processes of grit-blasting, plasma spraying, acid-etching, anodization and implant surface coatings with hydroxyapatite. (com.pk)
  • Ahmed F, Rashid H, Farookhi S, Verma V, Mulyar Y, Khalifa M, Sheikh Z. Surface modifications of endosseous dental implants by incorporation of roughness and hydroxyapatite coatings. (com.pk)
  • Effects of strontium-substitution in sputter deposited calcium phosphate coatings on the rate of corrosion of magnesium alloys. (pitt.edu)
  • In the present study, the calcium phosphate powders (HAP, HAP-TCP) were produced by a precipitation technique involving the use of aqueous solutions of calcium nitrate and diammonium hydrogen phosphate. (metu.edu.tr)
  • Hydroxyapatite powders (HAP: Ca 10 (PO 4 ) 6 (OH) 2 ) were prepared from calcium nitrate and di-ammonium hydrogen phosphate at various temperatures in aqueous solution in the absence and presence of carbon dioxide. (elsevierpure.com)
  • In addition, hydroxyapatite whiskers (wHA) have been considered the best option as reinforcing filler in comparison with other whiskers based on carbon, ceramic, glass, metal, and polymer due to the absence of cytotoxicity effects [ 12 , 13 ]. (hindawi.com)
  • Indeed, in a study originally aimed to show that the bonding phenomenon is chemical in nature, surface topography changes in the micrometer range were observed in hydroxyapatite ceramic implants, suggesting that micromechanical interlocking contributed to the bonding mechanism [8]. (toysis.pics)
  • Powder mixing effect on the compaction capabilities of ceramic powders. (speedmixer.uk)
  • Calcium sulfate is highly biocompatible and, since it is entirely replaced by bone, is biodegradable, having the ability to promote bone formation. (bauersmiles.com)
  • The Chemistry segment produces cosmetics, calcium phosphate for animal food, industrial phosphoric acid, synthetic mica and others. (iwasecosfa.eu)
  • The high temperature forms each have two types of columns, one containing only calcium ions and the other both calcium and phosphate. (wikipedia.org)
  • Bone tissue is a reservoir of calcium and phosphate ions in the form of hydroxyapatite, so it plays an important role maintaining the proper calcium levels, along with in other organs [ 5 ] [ 6 ] . (encyclopedia.pub)
  • 11 Calcium phosphate-coated implants have been described in the literature which demonstrate early direct bone attachment to the hydroxyapatite surface and this occursas quickly as one month post-operatively. (com.pk)
  • New iron phosphate and borophosphate compounds were synthesized and characterized by single crystal/powder X-ray diffraction, infrared spectroscopy, raman spectroscopy, thermogravimetric analysis, electron microscopy and elemental analysis. (metu.edu.tr)
  • X-ray diffraction (XRD) revealed that the powders crystallized at 800°C, containing anatase-TiO2, rutile-TiO2 and cubic-Al2O3 phases. (sharif.edu)
  • X-ray diffraction (XRD) analysis revealed that the powders crystallized at low temperature of 400°C, containing anatase-TiO2, rutile-TiO2, and Cr2O3 phases, depending on the annealing temperature. (sharif.edu)
  • X-ray diffraction analysis revealed that the powders were crystallised at the low temperature of 400 °C containing anatase-TiO2, rutile-TiO2 and cassiterite-SnO2 phases, depending on annealing temperature and Sn:Ti molar ratio. (sharif.edu)
  • At present the most frequent choice of ionic crosslinker is Calcium Chloride (CaCl 2 ) as it typically leads to rapid gelation due to its high solubility in aqueous solutions 21 . (nature.com)
  • Typically double decomposition reactions are employed, involving a soluble phosphate and calcium salts, e.g. (wikipedia.org)
  • The results of the physicochemical analysis of the waters show that they are full of bicarbonates (653 mg/L), chloride (478 mg/L), nitrate (412 mg/L), sodium (425 mg/L) and calcium (199mg/L). Their pH is slightly alkaline. (waset.org)
  • Thermochimie des solutions aqueuses: calculs de solubilité de composés inorganiques (phosphates, carbonates, oxalates. (epfl.ch)
  • Hydroxyapatite (HAP, Ca 10 (PO 4 ) 6 (OH) 2 ) has a hexagonal prismatic structure that exposes two crystalline surfaces: prism-faceted a- and basal-faceted c-surfaces. (osti.gov)
  • This transformation is reversible, with gypsum or calcium sulfate hemihydrate forming anhydrite by heating to ~200°C under normal atmospheric conditions.The hemihydrate phase has two different forms, alpha and beta, that differ by their crystalline structure and their hardness. (bauersmiles.com)
  • In fact, it was shown that the incorporation of hydroxyapatite with whiskers morphology can provide larger load transfer and favor toughening mechanisms, thus, increasing flexural modulus and fracture toughness of resins in comparison with conventional silica based fillers [ 6 - 11 ]. (hindawi.com)
  • This is a method in which powdered form of titanium is injected into a plasma torch at very high temperatures. (com.pk)
  • Some physicochemical characteristics influence the erosivity of food like the type of acid, pH, titratable acidity, chelating potential, calcium and phosphate concentration, temperature and adhesion 4 . (bvsalud.org)
  • Nanocrystalline and nanostructured TiO2-Cr2O3 thin films and powders were prepared by a facile and straightforward aqueous particulate sol-gel route at low temperature of 400°C. The prepared sols showed a narrow particle size distribution with hydrodynamic diameter in the range of 17.7 nm to 19.0 nm. (sharif.edu)
  • In the absence of carbon dioxide, the crystallinities as well as the calcium to phosphate ratio (Ca/P ratio) of HAP powders increased with an increase in the preparation temperature. (elsevierpure.com)
  • Preforms of calcium phosphate ceramics were produced by using a modified slip casting technique. (metu.edu.tr)
  • Why ( and how ) did researchers of the previous century use blood plasma-like synthetic biomineralization solutions , instead of distilled or deionized water, to synthesize biomimetic calcium phosphates? (cuneyttas.com)
  • Calcium phosphate is also commonly derived from inorganic sources such as mineral rock. (wikipedia.org)
  • Calcium phosphate cements are similar in composition to the mineral component of bone tissue. (encyclopedia.pub)
  • 6 Thus, P recovery from the most concentrated waste streams that comprise domestic wastewater, such as human urine and anaerobic digester sidestreams, 7,8 would provide an alternative to phosphate rock fertilizers while having the important benefits of decreasing nutrient loading to receiving waters and reducing operational problems caused by mineral scaling at wastewater treatment plants. (rsc.org)
  • Calcium is the most abundant mineral in the human body, vital for healthy bones and teeth. (hawkinswatts.com)
  • How to synthesize calcium phosphates in biomimetic saline solutions, over the pH range of 9 to 12.5 , without adding any strong base such as NH 4 OH, NaOH or KOH? (cuneyttas.com)
  • Interest in calcium phosphate cements as materials for the restoration and treatment of bone tissue defects is still high. (encyclopedia.pub)
  • The functionalization of calcium phosphate cements is of great clinical interest for the treatment or prevention of various diseases of bone tissue. (encyclopedia.pub)
  • It cannot be precipitated directly from aqueous solution. (wikipedia.org)
  • Calcium sulfate hemihydrate transforms into dihydrate when it encounters water or aqueous solution, forming a solid mass in a process called setting. (bauersmiles.com)
  • After this threshold, the mechanical performances decrease dramatically due to both the hydroxyapatite agglomerates formation and the low degree of resin conversion. (hindawi.com)
  • As the main biomineral component in enamel and dentine, hydroxyapatite is responsible for their higher mechanical performances. (hindawi.com)
  • To overcome the present lack in the literature about hydroxyapatite based composite, we proposed a systematic analysis of the mechanical and biocompatibility performances of them in comparison with commercial dental composite. (hindawi.com)
  • Aqueous tape-cast slurries of hydroxyapatite with a solid loading of 32 vol% were prepared from various fractions of aggregated (mean particle size 4.7 - 5.6 μm) and dispersed powder (mean particle size 0.17 - 0.29 μm). (ceramic-science.com)
  • Hybrid anion exchange resin containing hydrous ferric oxide (HAIX-Fe) was used in column tests to remove phosphate (PO 4 ) from fresh urine, hydrolyzed urine, and anaerobic digester filtrate, and subsequently recover PO 4 as struvite (MgNH 4 PO 4 ·6H 2 O) or potassium struvite (MgKPO 4 ·6H 2 O) via precipitation in the spent regenerant. (rsc.org)
  • Calcium sulfate is available in three different phases: i.e. hemihydrate (CaSO4 * 1/2H2O), dihydrate (CaSO 4 ·2H 2 O), and anhydride (CaSO 4 ). (bauersmiles.com)
  • BondBone® is a pure calcium sulfate composed of the two phases, hemihydrate and dehydrate, in a granulated powder form. (bauersmiles.com)
  • K.S.PEARL has a wide selection of powder materials which are carefully selected by cosmetic professionals. (iwasecosfa.eu)
  • The diversity of powder materials with various sizes, shapes and textures enables formulators to develop unique and creative products. (iwasecosfa.eu)
  • There is some debate about the different bioavailabilities of the different calcium salts. (wikipedia.org)