• Calcium phosphate (CaP)-based biomaterials have superior properties and have been widely used for bone defect repair, due to their similarities to the inorganic components of human bones. (encyclopedia.pub)
  • This work explores the preparation of luminescent and biomimetic Tb3+-doped citrate-functionalized carbonated apatite nanoparticles. (bvsalud.org)
  • This approach allowed to prepare apatite nanoparticles as a single hydroxyapatite phase when the used Tb3+ concentrations were (i) ≤ 0.005 M at all maturation times or (ii) = 0.010 M with 4 h of maturation. (bvsalud.org)
  • The myocardial nicheplays a critical role in directing the function and fate of cardiomyocytes;therefore, engineering a biomimetic scaffold holds excellent promise.We produced an electroconductive cardiac patch of bacterial nanocellulose(BC) with polypyrrole nanoparticles (Ppy NPs) to mimic the naturalmyocardial microenvironment. (ibecbarcelona.eu)
  • Stable nanoparticles in the size range of 123 to 350 nm were formed at over a wide molar mixing ratios of CHI/ML solutions (amino group/phosphate group) (NH(3) (+)/PO(3) (-)) and total polyelectrolyte (PE) concentrations (0.1 to 1 wt%) except at intermediate molar ratios when the surface charge was close to neutrality. (gmp-chitosan.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)
  • Barnes DH, Jugdaosingh R, Kiamil S, Best SM (2 011) Shelf Life and Chemical Stability of Calcium Phosphate Coatings Applied to Poly Carbonate Urethane Substrates. (omicsonline.org)
  • Despite numerous studies on the dissolution properties of calcium phosphate (CaP) coatings, the coating "shelf life" (i.e. the chemical stability of these coatings prior to implantation), has not been investigated adequately, particularly for CaP coatings applied to polymeric substrates. (omicsonline.org)
  • This paper examines the chemical stability of CaP coatings that were applied to a poly carbonate urethane (PCU) substrate by an aqueous, low temperature technique. (omicsonline.org)
  • Calcium phosphate (CaP) coatings are applied to the surface of a range of orthopaedic implants to enhance the interfacial bonding between the implant and host tissue. (omicsonline.org)
  • Hydroxyapatite and other calcium phosphate coatings have been investigated extensively for clinical applications due to their ability to form a direct bond with living bone, a property often referred to as "bioactivity" [ 2 ]. (omicsonline.org)
  • Numerous prior studies have investigated the dissolution of CaP coatings, such as hydroxyapatite, in conditions designed to simulate physiological conditions, i.e. typically at pH 7.4 and at ~37 °C [ 3 - 7 ]. (omicsonline.org)
  • Effects of strontium-substitution in sputter deposited calcium phosphate coatings on the rate of corrosion of magnesium alloys. (pitt.edu)
  • 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)
  • Many modern orthopaedic implants are coated with calcium phosphate to improve the host tissue response to the implants. (omicsonline.org)
  • Hydroxyapatite, a type of calcium phosphate that is similar to the mineral component of bone, is the most commercially popular calcium phosphate coating for biomedical implants [ 1 ]. (omicsonline.org)
  • 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)
  • 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)
  • What is biomimetic synthesis? (cuneyttas.com)
  • Commercial grade calcium sulfate hemihydrate (CaSO4·0.5H2O, or plaster of paris, PoP) an economically feasible and abundant precursor has been used in (Ca10(PO4)6(OH)2, HAp) synthesis. (metu.edu.tr)
  • The synthesis was realized by reacting solid PoP precursor with 1M of (NH4)2HPO4 aqueous solution, at ambient and mild hydrothermal conditions (2 ± 0.2 atm and 120 °C). The effect of reaction temperature and pressure on PoP to HAp conversion efficiencies and reaction kinetics has been reported. (metu.edu.tr)
  • HAp synthesis was achieved by reacting 1 M of (NH4)2HPO4 (or 0.5 M of (NH4)2HPO4) solutions with solid calcium sulfate precursors under ambient pressure (1 atm) and hydrothermal-like (2 ± 0.2 atm, 120 °C) conditions. (metu.edu.tr)
  • Synthesis of Hybrid Polyphenol/Hydroxyapatite Nanomaterials with Anti-Radical Properties. (upmc.fr)
  • 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)
  • Calcium sulfate hemihydrate transforms into dihydrate when it encounters water or aqueous solution, forming a solid mass in a process called setting. (bauersmiles.com)
  • 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 high salivary concentrations of calcium and phosphate which are maintained by salivary proteins may account for the development and remineralization of enamel. (wikipedia.org)
  • ICP-OES was used to measure the calcium and phosphorus concentrations of the immersion solution. (omicsonline.org)
  • 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)
  • Hydroxyapatite (HAP) as the most thermally stable crystalline phase of CaP is mostly used in the form of ceramics or composites scaffolds with polymers. (encyclopedia.pub)
  • An important inorganic phase of synthetic bone applications, calcium hydroxyapatite (HA, Ca-10(PO4)(6)(OH)(2)), was prepared as a single-phase and sub-micron bioceramic powder. (metu.edu.tr)
  • Extending the reaction time for low temperature reactions improves the HAp formation efficiency, meanwhile this also promotes precipitation of another calcium phosphate- CaHPO4 · 2H2O together with HAp. (metu.edu.tr)
  • Therefore, we investigate the functional mimicry in the bioinspired precipitation of calcium carbonate (CaCO3) with artificial peptides selected from a peptide library by phage display based on peptide-binding to calcite and aragonite, respectively. (bvsalud.org)
  • Anion-to-calcium ratio in the corals (An/CaCoral) were correlated with the equivalent ratios in the culturing seawater (An/CO32-SW). (bvsalud.org)
  • Xie, X. , Electrochemical Cutting in Weak Aqueous Electrolytes: The Strategy for Efficient and Controllable Preparation of Graphene Quantum Dots. (yuvalyoaz.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)
  • Thus the defect will always be implanted with the calcium dihydrate form during the post-setting phase. (bauersmiles.com)
  • 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 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)
  • Tooth remineralization is the natural repair process for non-cavitated tooth lesions, in which calcium, phosphate and sometimes fluoride ions are deposited into crystal voids in demineralised enamel. (wikipedia.org)
  • When enough acid is produced so that the pH goes below 5.5, the acid dissolves carbonated hydroxyapatite, the main component of tooth enamel. (wikipedia.org)
  • This produces the stronger and more acid-resistant fluorapatite, rather than the natural hydroxyapatite. (wikipedia.org)
  • Remineralization occurs on a daily basis after attack by acids from food, through the presence of calcium, phosphate and fluoride found in saliva. (wikipedia.org)
  • The calcium carbonate samples deposited in the absence or presence of peptides were analyzed with a set of complementary techniques with regard to morphology, polymorph, and nanostructural motifs. (bvsalud.org)