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Naturally occurring mineral form of calcium apatite
Hydroxyapatite (IMA name: hydroxylapatite) (Hap, HAp, or HA) is a naturally occurring mineral form of apatite with the formula Ca5(PO4)3(OH), often written
Hydroxyapatite
Chemical compound
hydroxyphosphate (calcium phosphate tribasic, tribasic calcium phosphate, hydroxyapatite, HAp) is an inorganic chemical compound that is made up of calcium,
Calcium_hydroxyphosphate
Natural repair process for non-cavitated tooth lesions
produced so that the pH goes below 5.5, the acid dissolves carbonated hydroxyapatite, the main component of tooth enamel. However, the pH threshold for dissolving
Remineralisation_of_teeth
Disorder characterized by calcium deposits in a tendon
calcified/calcareous tendinitis/tendinopathy, tendinosis calcarea, hydroxyapatite deposition disease, calcific periarthritis A plain X ray of the shoulder
Calcific_tendinitis
Type of craniofacial prosthesis
with the introduction of spherical implants made of porous calcium hydroxyapatite. This material allows for fibrovascular ingrowth within several months
Ocular_prosthesis
Medical condition
pseudogout, associated with periarticular or intra-articular deposition of hydroxyapatite or basic calcium phosphate (BCP) crystals. While primarily associated
Milwaukee_shoulder_syndrome
Mineral group, calcium phosphate
Apatite is a group of phosphate minerals, usually hydroxyapatite, fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ion, respectively
Apatite
Chemical compound
it is hydroxyapatite if the extra ion is mainly hydroxide. Much of the "tricalcium phosphate" on the market is actually powdered hydroxyapatite. Tricalcium
Tricalcium_phosphate
Body composition elements
or by molecular structure e.g., water, protein, fats (or lipids), hydroxyapatite (in bones), carbohydrates (such as glycogen and glucose) and DNA. In
Composition_of_the_human_body
Product of the rendering industry
Meat and bone meal (MBM) is a product of the rendering industry. It is typically about 48–52% protein, 33–35% ash, 8–12% fat, and 4–7% water. It is primarily
Meat_and_bone_meal
Bone-like material
material. The two major components of bone are hydroxyapatite (Ca10(PO4)6(OH)2), and collagen fibers. Hydroxyapatite, which is one of the most stable forms of
Artificial_bone
Chemical compound
it is made; however, it consists mainly of tricalcium phosphate (or hydroxyapatite) 57–80%, calcium carbonate 6–10% and carbon 7–10%. It is primarily used
Bone_char
Rigid organs of the skeleton of vertebrates
mineralized organic matrix. The primary inorganic component of human bone is hydroxyapatite, the dominant bone mineral, having the nominal composition of Ca10(PO4)6(OH)2
Bone
Dental enamel
diameter in primates, enamel prism are tightly packed hydroxyapatite crystals structures. The hydroxyapatite crystals are hexagonal in shape, providing rigidity
Enamel_prism
Cells that form bone tissue
bone. In organized groups of disconnected cells, osteoblasts produce hydroxyapatite, the bone mineral, that is deposited in a highly regulated manner, into
Osteoblast
Class of chemical compounds
thousands of terpenes and terpenoids. PPi is an important inhibitor of hydroxyapatite precipitation present in extracellular fluid (ECF) (including blood
Pyrophosphate
Surface reactive glass-ceramic biomaterial
differentiated from other synthetic bone grafting biomaterials (e.g., hydroxyapatite, biphasic calcium phosphate, calcium sulfate), in that it is the only
Bioactive_glass
Inorganic, nonmetallic solid prepared by the action of heat
which include bioceramics such as dental implants and synthetic bones. Hydroxyapatite, the major mineral component of bone, has been made synthetically from
Ceramic
Dietary mineral supplement
microcrystalline hydroxyapatite and to compare its efficacy with other forms of calcium supplementation. Ossein-hydroxyapatite and microcrystalline hydroxyapatite, both
Calcium_supplement
Major tissue that makes up part of the tooth in humans and many animals
water and organic material composing the rest. The primary mineral is hydroxyapatite, which is a crystalline calcium phosphate. Enamel is formed on the tooth
Tooth_enamel
Inorganic component of bone tissue
phosphate, carbonate, and hydroxide. Together these form carbonated hydroxyapatite with lower crystallinity, the predominant component of bone. Bone mineral
Bone_mineral
Chemical compound naturally occurring as periclase
N-protection of amines and amides. Doping MgO (about 1–5% by weight) into hydroxyapatite, a bioceramic mineral, increases the fracture toughness by migrating
Magnesium_oxide
Chemical element with atomic number 15 (P)
main component of bones and teeth, bone mineral, is a modified form of hydroxyapatite, itself a phosphorus mineral. Phosphorus was the first element to be
Phosphorus
Calcified tissue of the body; one of the four major components of teeth
surrounds the entire pulp. By volume, 45% of dentin consists of the mineral hydroxyapatite, 33% is organic material, and 22% is water. Yellow in appearance, it
Dentin
Chemical compound
Ca5(P3O10)2 These materials contain other anions in addition to phosphate: Hydroxyapatite Ca5(PO4)3(OH) Apatite Ca10(PO4)6(OH,F,Cl,Br)2 Tetracalcium phosphate
Calcium_phosphate
Anion, salt, functional group or ester derived from a phosphoric acid
structures are made of crystalline calcium phosphate in the form of hydroxyapatite. The hard dense enamel of mammalian teeth may contain fluoroapatite
Phosphate
Addition of fluoride to a water supply to reduce tooth decay
topical fluorides and alternatives like salt fluoridation and nano-hydroxyapatite. The United States was the first country to engage in water fluoridation
Water_fluoridation
Bone transplant
bone usually obtained from a bone bank), or synthetic (often made of hydroxyapatite or other naturally occurring and biocompatible substances) with similar
Bone_grafting
Physico-chemical changes in sediments occurring after their deposition
collagen) and two thirds mineral (calcium phosphate mostly in the form of hydroxyapatite) renders its diagenesis more complex. Alteration occurs at all scales
Diagenesis
Nutritional supplement and fertilizer made from ground-up bones and entrails
supply calcium and phosphorus to monogastric livestock in the form of hydroxyapatite, or as a slow-release organic fertilizer to supply phosphorus, calcium
Bone_meal
Chemical substance
either "amorphous tricalcium phosphate" (ATCP) or calcium-deficient hydroxyapatite (CDHA). CDHA is sometimes termed "apatitic calcium triphosphate." The
Amorphous_calcium_phosphate
Material derived from the tusks and teeth of animals
biomineral composite constructed from collagen fibers mineralized with hydroxyapatite. This composite lends ivory the impressive mechanical properties—high
Ivory
its composition, it has: mineral component primarily consisting of hydroxyapatite which contributes to its rigidity and mineralization. Enamel matrix
Hyaline layer of Hopewell-Smith
Hyaline_layer_of_Hopewell-Smith
Structural support for biological cells
macromolecules and minerals, such as collagen, enzymes, glycoproteins and hydroxyapatite that provide structural and biochemical support to surrounding cells
Extracellular_matrix
Proteins secreted by molluscs
crystals to nucleate, in much the same way that collagen nucleates hydroxyapatite crystals. Conchiolin serves as a relatively flexible, crack-deflecting
Conchiolin
Mammalian genus from the late Cretaceous
continuous bands of matrix (unbundled hydroxyapatite crystals) between the prisms (bundles of hydroxyapatite crystals) of the enamel, and perikymata—wave-like
Lavanify
Bioactive glass biomaterial
biomedical applications because of its similar composition to that of hydroxyapatite, the mineral component of bone. This similarity provides Bioglass 45S5's
Bioglass_45S5
Medical condition
considered to be an age-related change. The asteroid bodies are made up of hydroxyapatite, which in turn consists of calcium and phosphates or phospholipids.
Asteroid_hyalosis
Process by which living organisms produce minerals
drawn out from the hydroxyapatite. The mineral ions introduced during remineralisation restore the structure of the hydroxyapatite crystals. The clubbing
Biomineralization
Effects of a drug on living things
the biological environment, the formation of a layer of carbonated hydroxyapatite (CHA) initiates bonding to the bone tissues. The bioglass surface coating
Biological_activity
Medical intervention
commonly hyaluronic acid ones like Restylane and Juvederm or calcium hydroxyapatite (Radiesse), are used to alter and shape a person's nose without a surgery
Non-surgical_rhinoplasty
Small mineral concentrations in the brain
that they are composed of calcium phosphate (later characterized as hydroxyapatite), calcium carbonate, magnesium phosphate, and ammonium phosphate. Recently
Corpora_arenacea
Chemical elements essential for life
Herrmann M, Jacobs K (May 2013). "Reduced adhesion of oral bacteria on hydroxyapatite by fluoride treatment". Langmuir. 29 (18): 5528–33. doi:10.1021/la4008558
Mineral_(nutrient)
Species of mantis shrimp
calcium carbonate. The impact region has shown to be mainly composed of hydroxyapatite, with a higher degree of crystallinity compared to that found in bovine
Odontodactylus_scyllarus
Surgical operation on skull
cranioplasty when the use of autografts is not available or not recommended. Hydroxyapatite is another option for children cranioplasty as it allows the expansion
Cranioplasty
Medical condition
including monosodium urate, calcium pyrophosphate dihydrate, calcium hydroxyapatite, and calcium oxalate. Deposition of crystals in joints Calcium pyrophosphate
Crystal_arthropathy
Chemical compound
precursor to tooth enamel, dentine, and bones. OCP is a precursor of hydroxyapatite (HA), an inorganic biomineral that is important in bone growth. OCP
Octacalcium_phosphate
American engineering researcher
regeneration. His research has focussed on hydroxyapatite, the major inorganic component to bone. In contrast to hydroxyapatite that had not been doped, Webster's
Thomas_J._Webster
Fluoride-containing substance
et al. (December 2010). "Elemental depth profiling of fluoridated hydroxyapatite: saving your dentition by the skin of your teeth?". Langmuir. 26 (24):
Dectaflur
ratio of the carbon isotopes 13C and 12C that are found within the hydroxyapatite. Consumption of plants that use the C3 pathway in photosynthesis, like
Dental analysis in archaeology
Dental_analysis_in_archaeology
Detail hidden to optical microscopes
incorporate the material into its ultrastructure and form new bone. Hydroxyapatite is a biomaterial used to interface medical devices directly to bone
Ultrastructure
Protein-coding gene in humans
hydrogen bonding potency, and helical conformation for adsorption to hydroxyapatite and inhibition of mineralization". J. Biol. Chem. 267 (9): 5968–76.
STATH
Fluid found in the cavities of synovial joints
Crystals include monosodium urate crystals, calcium pyrophosphate, hydroxyapatite and corticosteroid crystals. Monosodium urate crystals are seen in gout
Synovial_fluid
Internal framework of the human body
but a mixture of chondroitin sulfate and hydroxyapatite, the latter making up 70% of a bone. Hydroxyapatite is in turn composed of 39.8% of calcium, 41
Human_skeleton
Formation of dentin during tooth development
inside of the tooth. The odontoblast process causes the secretion of hydroxyapatite crystals and mineralization of the matrix (mineralisation occurs due
Dentinogenesis
Material for biomedical applications
(6 July 2024). "3D-Bioprinted Gelatin Methacryloyl-Strontium-Doped Hydroxyapatite Composite Hydrogels Scaffolds for Bone Tissue Regeneration". Polymers
Gelatin_methacryloyl
Protein-coding gene in the humans
catalyses the breakdown of pyrophosphate (an extracellular inhibitor of hydroxyapatite precipitation). It is secreted into the osteoid by osteoblasts to allow
ALPL
Material or tissue between a eukaryotic organism's cells
of connective tissue found in the body, composed largely of hardened hydroxyapatite-containing collagen. In larger mammals, it is arranged in osteon regions
Matrix_(biology)
Protein-coding gene in the species Homo sapiens
Yin A, Margolis HC, Grogan J, et al. (2003). "Physical parameters of hydroxyapatite adsorption and effect on candidacidal activity of histatins". Arch.
Histatin_1
Disease caused by accumulation of crystals
Prions Uromodulin ASC speck complex Myoglobin Heme Misfolded proteins Hydroxyapatite Calcium phosphate Calcium oxalate monohydrate Calcium oxalate dihydrate
Crystallopathy
Formation of enamel during tooth development
The undermineralised, immature enamel containing long, thin prisms of hydroxyapatite, now matures. As the prisms in the enamel grow in thickness but not
Amelogenesis
Type of ocular surgery
Carol L.; Shields, Jerry A.; Singh, Arun D. (1994). "Problems with the hydroxyapatite orbital implant: experience with 250 consecutive cases" (PDF). British
Enucleation_of_the_eye
Mechanical property of bone
Bone is a composite of the bio-polymer collagen and the bio-ceramic hydroxyapatite. Additionally, the collagen is plied in various directions around the
Viscoelasticity_of_bone
Biogeochemical cycle
consists of both living and dead organisms, while PIP mainly consists of hydroxyapatite, Ca5(PO4)3OH . Inorganic phosphorus comes in the form of readily soluble
Phosphorus_cycle
Medical imaging technique
accumulated or exchanged with bone extracellular fluid, chemisorption onto hydroxyapatite crystals to form fluorapatite, as shown in the following equation: C
PET_for_bone_imaging
Synthetic, biodegradable polyester
enhanced bioactivity that are suitable for bone tissue engineering. PCL–Hydroxyapatite composite scaffolds for bone tissue engineering can mimic the composition
Polycaprolactone
Genus of molluscs
consists of a single row of teeth which are mineralized in crystalline hydroxyapatite (a most unusual mineral in organisms), and its teeth are not periodically
Falcidens
Coating process for applying heated materials to a surface
corrosion-resistant alloys (stainless steels, nickel-based alloys, aluminium, hydroxyapatite for medical implants, etc.). HVAF coating technology is the combustion
Thermal_spraying
Cell type
transient (relative to osteoclasts) mechanism called osteocytic osteolysis. Hydroxyapatite, calcium carbonate and calcium phosphate is deposited around the cell
Osteocyte
Skeletal disorder
collagen type-I. Collagen type-I molecules form a composite material with hydroxyapatite to make up collagen fibrils. The hierarchal structure continuous with
Osteoporosis
Porcelain composed of bone ash, feldspathic material, and kaolin
why bone china maintains a luxury status and high prices. The use of hydroxyapatite compounds, derived from rock sources, rather than bone ash has increased
Bone_china
Calcified whitish structure in humans' mouths used to break down food
micrometers a year from normal factors. Enamel's primary mineral is hydroxyapatite, which is a crystalline calcium phosphate. The large amount of minerals
Human_tooth
Water sanitation procedure
synthetic hydroxyapatite adsorbent. In this novel defluoridation technique, amending aqueous calcium successfully prevents the dissolution of hydroxyapatite during
Defluoridation
magnesium, Co–Cr alloys, Ti alloys), ceramics (zirconia, bioglass, alumina, hydroxyapatite) and polymers (acrylic, nylon, silicone, polyurethane, polycaprolactone
Mechanical properties of biomaterials
Mechanical_properties_of_biomaterials
Part of the body that forms the supporting structure
internal organs. Bones are primarily made of inorganic minerals, such as hydroxyapatite, while the remainder is made of an organic matrix and water. The hollow
Skeleton
Fermented tea beverage
leading to enamel erosion. Acids react with the bases within calcium hydroxyapatite, the primary component of tooth enamel, neutralizing them and increasing
Kombucha
Chemical element with atomic number 20 (Ca)
digestive systems; is indispensable to the building of bone in the form of hydroxyapatite; and supports synthesis and function of blood cells. For example, it
Calcium
Protein and coding gene in humans
tissues. It is involved in transport of pyrophosphate (an inhibitor of hydroxyapatite precipitation) from cells into the extracellular space. It is expressed
ANKH
fluoride, and has trademarked Hydroxi™, a proprietary blend of nano-hydroxyapatite and natural ingredients after lab testing showed it outperformed leading
List_of_toothpaste_brands
Isotope of radium
particle-emitting radiotherapy drug that mimics calcium and forms complexes with hydroxyapatite at areas of increased bone turnover. The principal use of radium-223
Radium-223
Medical condition
suggested that drinking of defluoridated water from the "calcium amended-hydroxyapatite" defluoridation method may help in the fluorosis reversal. Defluoridated
Skeletal_fluorosis
Resilient and smooth elastic tissue present in animals
layers near bone, with high concentrations of mineral deposits such as hydroxyapatite. Collagen fibers (which provide mechanical stiffness in cartilage) in
Cartilage
Deformation of teeth due to acids produced by bacteria
of tooth enamel is composed of minerals. These minerals, especially hydroxyapatite, will become soluble when exposed to acidic environments. Enamel begins
Tooth_decay
Chemical compound
metal alloy implants (orthopaedic and dental) are plasma sprayed with hydroxyapatite. Tetracalcium phosphate is stable in water at room temperature for up
Tetracalcium_phosphate
Sharp, short-lived tooth pain
strontium chloride, strontium acetate, arginine, calcium carbonate, hydroxyapatite and calcium sodium phosphosilicate. Desensitizing chewing gums and mouthwashes
Dentin_hypersensitivity
Reduction of blood flow to the heart
inflammatory cells – to form an atheromatous plaque. Calcium phosphate (hydroxyapatite) deposits in the muscular layer of the blood vessels appear to play
Coronary_artery_disease
Chemical compound
with binding sites for calcium ions serving as nucleation point for hydroxyapatite (tooth mineral) formation. The high affinity to tooth mineral is based
Oligopeptide_P11-4
Mineralized body tissue
water and organic material composing the rest. The primary mineral is hydroxyapatite, which is a crystalline calcium phosphate. Enamel is formed on the tooth
Hard_tissue
Form of hardened dental plaque
listed here in order of increasing ratio of phosphate to calcium: hydroxyapatite, Ca5(PO4)3OH whitlockite, Ca9(Mg,Fe)(PO4)6(PO3OH) octacalcium phosphate
Calculus_(dental)
Antibiotic
and is incorporated into bones during the active mineralization of hydroxyapatite. When incorporated into bones, tetracycline can be identified using
Tetracycline
Type of ceramic materials that are biocompatible
interface. Calcium phosphates usually found in bioceramics include hydroxyapatite (HAP) Ca10(PO4)6(OH)2; tricalcium phosphate β (β TCP): Ca3 (PO4)2; and
Bioceramic
Unmineralized, organic portion of the bone matrix
transformation of osteoid into mineralized bone involves the deposition of hydroxyapatite crystals [Ca10(PO4)6OH2] within the organic matrix. Mineralization occurs
Osteoid
Egyptian condensed matter physicist
react with SBF simulating solution to precipitate layers of hydroxyapatite and hydroxyapatite. These represent the basic crystalline phases in the formation
Hamdy_Doweidar
Genetic disorder impairing tooth development
dentine phosphoprotein (DPP). The DPP protein is thought to contribute to hydroxyapatite crystal formation and growth, a fundamental crystal which is widely
Dentinogenesis_imperfecta
Medical specialty
MDP, radioactivity can be transported and attached to bone via the hydroxyapatite for imaging. Any increased physiological function, such as due to a
Nuclear_medicine
Metabolic bone disease
extracellular matrix of bones and teeth, and inhibits formation of hydroxyapatite mineral, the main hardening component of bone, causing rickets in infants
Hypophosphatasia
Medical intervention
different equivalent bone mineral densities. Usually either calcium hydroxyapatite (CaHAP) or potassium phosphate (K2HPO4) are used as the reference standard
Quantitative computed tomography
Quantitative_computed_tomography
Group of genetic disorders resulting in fragile bones
At a larger scale, the relationship between the collagen fibrils and hydroxyapatite crystals to form bone is altered, causing brittleness. Bone fractures
Osteogenesis_imperfecta
Hard structure of the mouth
the rest of teeth and is composed of collagen fibres, reinforced with hydroxyapatite. Though teeth are very resistant, they also can be brittle and highly
Tooth
Medical procedure to reduce bone loss after tooth extraction
biomaterials such as fibrin scaffolds, PLGA, synthetic biodegradable polymer, hydroxyapatite, tricalcium phosphate, bioglass). Barrier membranes can be either resorbable
Socket_preservation
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