apatite crystal


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apatite crystal

In dentistry, the hydroxyapatite crystal typical of calcified tissues; a complex of calcium phosphate and other elements, present in bone and in the cementum, dentin, and enamel layers of teeth. The most dense crystalline pattern is found in enamel, the hardest tissue of the body.
See also: crystal
References in periodicals archive ?
Use a slightly different temperature for how cool the surface of the Earth is, for instance, and suddenly an apatite crystal might look like it's been buried for much longer.
Indeed, abundant apatite crystals were identified in the lumens of loops of Henle.
showed a calcium phosphate rich interface layer with apatite crystals grown on solid state reaction between glass ceramic and bone.
Dental enamel is arranged in the form of hexagonal apatite crystals.
Their simulations revealed that the unusually hydrogen-rich apatite crystals observed in many lunar rock samples may not have formed within a water-rich environment, as originally thought.
The aim of this study was therefore to investigate the feasibility of fabricating nano-size and needle-like shape HAP crystals at low temperature, mimicking the morphology and size of bone apatite crystals.
The reduction in specific surface area resulting from calcination is due to both growth of apatite crystals and sintering of crystals, the latter being a consequence of adhesion of particles by expansion of interfacial contact points to form bonded aggregates (Kuczynski 1965).