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  • APATITE (Calcium (Fluoro-, Chloro-, Hydroxyl-) Phosphate)

    THE MINERAL APATITE. Chemistry: Ca5(PO4)3(OH,F,Cl), Calcium (Fluoro, Chloro, Hydroxyl) Phosphate Class: Phosphates; Group: Apatite; Uses: as a source of phosphorous to be used in fertilizer, rarely as a gemstone and as a mineral specimen. Specimens

  • KIDNEY STONE TYPES Kidney Stone Evaluation And Treatment

    Much like calcium oxalate, calcium phosphate crystals begin simply as one to one pairings of doubly negative phosphate ions with doubly positive calcium atoms. This initial crystal is named brushite. Brushite, which is an equal mixture of calcium and phosphate ions, can convert to hydroxyapatite (HA), which has a more unbalanced proportion of

  • A Woman with Recurrent Calcium Phosphate Kidney Stones

    Jul 01, 2012· Kidney stones composed predominantly (50% or more) of calcium phosphate constitute up to 10% of all stones and 15%–20% of calcium stones, 80% of which are composed of calcium oxalate. Calcium phosphate is a minor component of up to 30% of calcium oxalate stones as well. The cause of calcium phosphate stones is often obscure but most often related to a high urine pH.

  • Calcium Phosphate an overview ScienceDirect Topics

    Calcium phosphate-based bone graft substitutes (mostly tricalcium phosphate or hydroxyapatite) are bioceramics that show the greatest similarity to the minerals found in bone. This is what gives calcium phosphates excellent biocompatibility, biodegradability, and osteoconductivity [ 61,62 ].

  • Influence of Calcium Phosphate and Apatite Containing

    The aim of the present study was to compare the effect of a conventional fluoride preparation and of modern calcium phosphate or apatite containing prophylactic products on initial erosive mineral loss in a combined in situ/in vitro setup. Surface alterations and layer formation were visualized electron-microscopically. 2. Materials and Methods

  • Calcium Hydroxyapatite and How to Best Protect Your Bones

    May 28, 2020· Calcium hydroxyapatite contains the amino acids, phosphate, and other essential minerals that human bones need. Calcium hydroxyapatite’s similarity to the composition of natural bone allows for optimal bioavailability and stability over other calcium phosphate ingredients. The calcium found in calcium hydroxyapatite is superior to other forms

  • Hydroxyapatite Ca5HO13P3 PubChem

    Calcium tribasic phosphate. hydroxyl apatite. Calcium hydroxide phosphate (Ca5(OH)(PO4)3) Alveograf (TN) Decacalcium hexaphosphate dihydroxide. EINECS 235-330-6. Microcrystalline Hydroxyapatite Concentrate. EC 235-330-6. 5Ca.3PO4.HO. Calcium hydroxide phosphate (Ca10(OH)2(PO4)6) HYDROXYLAPATITE, CERAMIC. CHEMBL2218916. calcium hydroxide tris

  • IDIOPATHIC CALCIUM PHOSPHATE STONE FORMERS Kidney

    A majority have hydroxyapatite as their stone CaP mineral admixed with variable amounts of calcium oxalate (CaOx), and these 2 crystal types make up their stones. We call these hydroxyapatite calcium phosphate stone formers (HASF). The other IPSF have brushite their stones and we call them BRSF.

  • What Is Hydroxyapatite Toothpaste? Colgate® Oral Care

    On purely a chemical level, hydroxyapatite is a naturally occurring form of the mineral calcium apatite, also known as calcium phosphate. The majority of the enamel and dentin in your teeth is made from a form of hydroxyapatite. As the Open Dentistry Journal notes, tooth enamel consists of about 97 percent hydroxyapatite, 1.5 percent water and

  • IDIOPATHIC CALCIUM PHOSPHATE STONE FORMERS Kidney

    A majority have hydroxyapatite as their stone CaP mineral admixed with variable amounts of calcium oxalate (CaOx), and these 2 crystal types make up their stones. We call these hydroxyapatite calcium phosphate stone formers (HASF). The other IPSF have brushite their stones and we call them BRSF.

  • Calcium Phosphate Mineral an overview ScienceDirect Topics

    Hydroxyapatite (HA) is a calcium phosphate mineral with the chemical formula Ca 10 (PO 4) 6 (OH) 2.HA-like compounds compose approximately 65% of bone, making it an appealing option for a synthetic bone composite [55].The addition of up to 30 wt% HA to a polycaprolactone-based polyurethane scaffold has been shown to increase degradation rates both in vitro and in vivo when the particles are

  • Hydroxyapatite Crystal-Induced Rheumatology Advisor

    Tetracyclines stain calcium phosphate mineral has been used to identify BCP crystals in synovial fluid based on its avidity to bind hydroxyapatite mineral and its fluorescence. In a small trial, the use of oxytetracycline binding assay appeared to perform better than Alizarin red S,

  • Bioactivity of Biphasic Calcium Phosphate Granules, the

    Synthesis and thermal behavior of well-crystallized calcium-deficient phosphate apatite. J. Solid State Chem. 78 215–219. 10.1016/0022-4596(89)90099-6 [Google Scholar] Mortier A., Lemaitre J., Rouxhet P. G. (1989b). Temperature-programmed characterization of synthetic calcium-deficient phosphate apatites. Thermochim.

  • Calcium phosphate uroliths (hydroxyapatite, brushite

    and carbonate-apatite. The name carbonate-apatite is derived from the fact that carbonate ion may displace phosphate ion in some uroliths. Less common forms of calcium phosphate include calcium hydrogen phosphate dihydrate (Brushite), tricalcium orthophosphate (Whitlockite), and octacalcium phosphate.

  • Self-healing capacity of fiber-reinforced calcium

    Jun 10, 2020· α-TCP was prepared by sintering calcium hydrogen phosphate (CaHPO 4, Mallinckrodt-Baker, Germany) and calcium carbonate (CaCO 3, Merck, Germany) in

  • Transformation of amorphous calcium phosphate to bone-like

    The growth of apatite crystals from amorphous calcium phosphate is an area of intense study. Here, the authors report on the use of high resolution TEM imaging to provide evidence of nucleation

  • Hydroxyapatite :: properties, uses and applications

    Hydroxyapatite (HAp) is a calcium phosphate similar to the human hard tissues in morphology and composition 1.Particularly, it has a hexagonal structure 2, 3 and a stoichiometric Ca/P ratio of 1.67, which is identical to bone apatite 2, 4, 5.. An important characteristic of hydroxyapatite is its stability when compared to other calcium phosphates.

  • How are the types of calcium different? The most common

    When it comes to calcium supplements, you’ll commonly find calcium phosphate as tricalcium phosphate or microcrystalline hydroxyapatite (MCHC we’ll cover this in just a moment.) Tricalcium phosphate supplements tend to source their calcium from phosphate rock– that’s any rock with a high concentration of phosphate.

  • Calcium Phosphate Cement: Review of Mechanical and

    Purpose: Calcium phosphate cement is a bioactive and biodegradable grafting material in the form of powder and liquid, which when mixed, sets as primarily hydroxyapatite, sometimes mixed with unreacted particles and other phases. This material has been extensively investigated due to its excellent biological properties, potential resorbability, molding capabilities, and easy manipulation.

  • Urinary Tract / Kidney Stones (Calcium Phosphate) in Cats

    Calcium Phosphate Urolithiasis in Cats. When stones (uroliths) form in the urinary tract, it is referred to as urolithiasis. There are various types of these stones seen in cats -- among them, those made from calcium phosphate. Also known as apatite uroliths, calcium phosphate stones are more often found the kidneys than the urinary bladder.

  • The role of intracellular calcium phosphate in osteoblast

    The role of intracellular calcium phosphate in osteoblast-mediated bone apatite formation Suwimon Boonrungsimana, Eileen Gentlemana,b,c, Raffaella Carzanigad, Nicholas D. Evansa,b,1, David W. McComba,e, Alexandra E. Portera,2, and Molly M. Stevensa,b,f,2 Departments of aMaterials and fBioengineering, bInstitute of Biomedical Engineering, and dElectron Microscopy Centre, Division of

  • Urinary Tract / Kidney Stones (Calcium Phosphate) in Dogs

    Calcium Phosphate Urolithiasis in Dogs. Urolithiasis is a condition in which stones (uroliths) are formed in the urinary tract. There are various types of these stones seen in dogs -- among them, those made from calcium phosphate. Also known as apatite uroliths, calcium phosphate stones are more often found the kidneys than the urinary bladder.