fluorapatite


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fluor·ap·a·tite

(flōr-ap'ă-tīt),
A naturally occurring fluorophosphate of calcium.

fluor·ap·a·tite

(flōr-ap'ă-tīt)
A form of hydroxyapatite in which fluoride ions have replaced some of the hydroxyl ions; as a component of teeth, fluorapatite resists acids from plaque-forming bacteria and high carbohydrate intake.
See also: apatite, hydroxyapatite

fluor·ap·a·tite

(flōr-ap'ă-tīt)
Component of teeth, fluorapatite resists acids resulting from plaque-forming bacteria and high carbohydrate intake.

fluorapatite (flôrap´ətīt),

n a member of the family of minerals that make up the basic structure of bones and teeth; basically a hydroxapatite form in which fluoride ions replace hydroxyl ions.
fluorapatite crystal
(kris´təl),
n the crystalline structure that occurs after hydroxyapatite changes into fluorapatite as a result of the tooth being exposed to fluoride.

fluorapatite

a fluorine-bearing mineral in rock phosphate. Contributes to local fluorine poisoning and also to distant sites if the rock phosphate is mined for livestock feeding as a dietary phosphorus supplement.
References in periodicals archive ?
The concentration of Fluoride released from Fluorapatite coated Hydroxyapatite prepared bone graft in Distilled Water increased gradually from 1.
Domains with Ti-clinohumite (Figures 5, 6, 7, 8a-b) and fluorapatite (Figures 7, 8a, g) are cross-cut by veinlets of very fine- to medium-grained xenoblasts of calcite.
Acronyms used in Study 1 and Study 2 Calcium phosphate cement CPC Granulation tissue GT Dicalcium phosphate anhydrous DCPA Hydroxyapatite HA Dicalcium phosphate dihydrate DCPD Infiltrated cell IC Fluorapatite FA Implanted material IM Fibrous connective tissue FCT Tetracalcium phosphate TTCP Giant cell GC Undecalcified material UM
Fluoride Mechanisms: When fluoride is applied to the tooth substrate, for every two fluoride ions, 10 calcium ions and six phosphate ions are required to form one unit cell of fluorapatite (Ca10 (PO4) 6F2).
Analyses were calibrated using albite (Na), sanidine (Si, Al, and K), diopside (Ca and Mg), almandine (Fe), rutile (Ti), fluorapatite (P), and rhodonite (Mn) standards.
Fluorapatite is known to be much more stable and resistant to acid dissolution as compared to hydroxy- apatite.
Fluorapatite, zircon, Nb-Ta-Ti oxides, xenotime-(Y), monazite-(Ce), uraninite and coffinite are common accessory minerals.
Calcium, phosphate and fluoride ions are released and organized in fluorapatite and Ca[F.
Montmorillonite, kaolinite, quartz, fluorapatite, hematite and pyrite were also identified [9].
Summary: TEHRAN (FNA)- Iranian researchers from Isfahan University of Technology solved the problem of high corrosion in magnesium alloys with applications in tissue engineering, using fluorapatite nanoparticles.
When Fluoride ions (F-) substitute the hydroxyl groups (OH-), hydroxyapatite is transformed to fluorapatite, which is more stable and resistant to acid attack.
Some thought that fluoride simply changed the main mineral in enamel, hydroxyapatite, into a more-decay resistant material called fluorapatite.