Heterogeneous fluoridated apatites synthesized with a three-step fluoride supply system

Two types of heterogeneous fluoridated apatite, H–F–H and F–H–F, were synthesized by supplying fluoride during the middle half (H–F–H) or initial and final quarters (F–H–F) of the experimental period. Although X-ray diffraction patterns and SEM photographs of both H–F–H and F–H–F-type apatites were...

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Bibliographic Details
Published inBiomaterials Vol. 19; no. 10; pp. 919 - 923
Main Authors Okazaki, M., Tohda, H., Yanagisawa, T., Taira, M., Takahashi, J.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.05.1998
Elsevier Science
Subjects
Apatites - chemical synthesis
Apatites - chemistry
Biological and medical sciences
Crystal shape
Crystallography, X-Ray
Fluorides - chemistry
Heterogeneous apatites
Hydroxyapatites - chemistry
Medical sciences
Microscopy, Electron
Microscopy, Electron, Scanning
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Solubility
Surface Properties
Technology. Biomaterials. Equipments. Material. Instrumentation
Three-step fluoride supply
Heterogeneous apatites
Three-step fluoride supply
Crystal shape
Solubility
Apatite
Biomaterial
Fluorides
X ray analysis
Biomedical engineering
Crystalline structure
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Summary:Two types of heterogeneous fluoridated apatite, H–F–H and F–H–F, were synthesized by supplying fluoride during the middle half (H–F–H) or initial and final quarters (F–H–F) of the experimental period. Although X-ray diffraction patterns and SEM photographs of both H–F–H and F–H–F-type apatites were not significantly different, high-resolution transmission electron microscopy showed quite different features; H–F–H-type apatite crystals were elongated hexagons, while those of F–H–F-type apatite were rather wider hexagons with electron damage in three-quarters of the inner core. These results supported the previous speculations on the two different types of heterogeneous fluoridated hydroxyapatites synthesized with fluoride concentrations stoichiometrically equivalent to that of fluorapatite: hydroxyapatite covered with fluorapatite and fluorapatite covered with hydroxyapatite. F–H–F-type apatite was less soluble than that of H–F–H-type apatite.
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ISSN:0142-9612
1878-5905
DOI:10.1016/S0142-9612(97)00244-5