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  • mixture
  • A novel ceramic form of hydroxylapatite and a novel ceramic product comprising a mixture of the latter and whitlockite, the preparation of these ceramics and dental restorative compositions and dental and surgical prosthetic materials containing the same are disclosed. (google.es)
  • acid
  • While no filler fulfills all of these requirements, hydroxylapatite-based fillers appear to come rather close to many of them, at least compared to the competition like collagen-based and hyaluronic acid-based fillers. (smartskincare.com)
  • Some of the advantages of hydroxylapatite-based cosmetic fillers are similar to those of non-animal stabilized hyaluronic acid gel . (smartskincare.com)
  • Hydroxylapatite-based cosmetic fillers are biodegradable (i.e. they slowly disintegrate after injection) but they last relatively long (about 12 - 18 month), which is more than collagen-based fillers (3-6 mo) or hyaluronic acid-based fillers (6 - 12 month). (smartskincare.com)
  • In one study conducted in Germany and Spain, researchers compared hydroxylapatite-based filler Radiesse with a leading hyaluronic acid-based filler Restylane. (smartskincare.com)
  • It was reported that "although requiring approximately 33% less injection volume, the calcium hydroxyapatite product yielded significantly increased aesthetic improvement vs hyaluronic acid in 63% of patients at 6 months. (smartskincare.com)
  • In such a situation, hydroxylapatite-based filler is at a disadvantage compared to a hyaluronic acid-based filler. (smartskincare.com)
  • This flexible conformation suggests that the protein has few structural domains, however it has been suggested that there may be several spatially segmented functional domains including a hydrophobic collagen-binding domain (rattus norvegicus residues 36-57), a hydroxyapatite-nucleating region of contiguous glutamic acid residues (rattus norvegicus residues 78-85, 155-164) and a classical integrin-binding motif (RGD) near the C-terminal (rattus norvegicus residues 288-291). (wikipedia.org)
  • relatively
  • If the injections of a hydroxylapatite filler have created any unacceptable irregularities, they tend to eventually dissipate on their own, even though it may take a relatively long time (longer than for most other biodegradable fillers). (smartskincare.com)
  • While relatively long lasting, hydroxylapatite-based fillers do degrade and have to be re-injected every year or so to maintain results. (smartskincare.com)
  • teeth
  • The adsorption of phosphonylated polyphenylene oxide onto hydroxyapatite was investigated as a basis for biomedical applications involving surface modification of teeth and bone. (springer.com)
  • Nano hydroxyapatite does a better job remineralizing and strengthening teeth than a toothpaste containing just fluoride. (carifree.com)
  • sintered ceramic
  • 1. As an article of manufacture, substantially pure hydroxylapatite in the form of a translucent, isotropic, polycrystalline, sintered ceramic having an average crystallite size in the approximate range 0.2 to 3 microns, a density greater than approximately 98 percent of the theoretical density of hydroxylapatite and being further characterized by the absence of pores and by cleavage along smooth curved planes. (google.es)
  • materials
  • In spite of attractive biological properties, hydroxylapatite, and materials based thereon, have some drawbacks, such as low bioresorption rate in vivo, poor stimulating effect on the growth of new bone tissues, low crack resistance and small fatigue durability in the physiological environment. (wikipedia.org)
  • formation
  • The formation of nano crystallites of CoFe2O4 ferrites in the hydroxyapatite Ca10-3xFe2xCox(PO4)6(OH)2 (where x= 0, 0.1, 0.2, 0.3, 0.4 and 0.5 %mole) mixtures heated to temperatures between 500 and 1250°C for 2 hrs. (nsti.org)
  • A promising method of modification is the introduction of fluorine or silicon into the primary structure with the formation of fluorine- or silicon-substituted hydroxylapatite. (wikipedia.org)
  • uses
  • The most common uses of hydroxylapatite-based cosmetic fillers are moderate-to-deep wrinkles, facial folds, loss of facial fat (lipoatrophy) and similar problems. (smartskincare.com)
  • weight
  • 6. As an article of manufacture, a strong, hard, dense, isotropic, polycrystalline sintered biphasic ceramic comprising as one phase from about 20 to 95 percent by weight of hydroxylapatite and as a second phase from about 5 to 80 percent by weight of whitlockite and being characterized by the absence of pores and by cleavage along smooth curved planes. (google.es)
  • several
  • citation needed] Hydroxyapatite can be synthesized via several methods such as wet chemical deposition, biomimetic deposition, sol-gel route (wet-chemical precipitation) or electrodeposition. (wikipedia.org)
  • make
  • Considering that the results of misapplication of a hydroxylapatite filler may be long lasting, make sure to find a board certified physician who has performed at least a few hundreds of injections of this type. (smartskincare.com)