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Two bovine hydroxyapatites (BHAs), one with granule size of 150 to 200 microm and one with granule size of 300 to 329 micro, and 2 synthetic hydroxyapatites (SHAs), with granule size of 150 and 300 microm, respectively, were compared for effectiveness in repairing circumferential bone defects in dogs. The hydroxyapatites (HAs) were characterized through(More)
DENTINE DERIVED HYDROXYAPATITE-GLASS COMPOSITES L.S. Ozyegin, F.N. Oktar, U. Karacayli, C. Aktas, S. Agathopoulos, C. Kalkandelen, M. Yetmez Marmara University, Istanbul, Turkey; Gulhane Military Medical Academy, Ankara, Turkey; Leibniz Institute for New Materials, Saarbrücken, Germany; Ioannina University, Ioannina, Greece; Istanbul University, Istanbul,(More)
Biologically derived hydroxyapatite from calcinated (at 850 degrees C) bovine bones (BHA) was doped with 5 wt% and 10 wt% of SiO(2), MgO, Al(2)O(3) and ZrO(2) (stabilized with 8% Y(2)O(3)). The aim was to improve the sintering ability and the mechanical properties (compression strength and hardness) of the resultant BHA-composites. Cylindrical samples were(More)
The study reports the preparation and characterization of powders consisting of the different phases of calcium phosphates that were obtained from the naturally derived raw materials of sea-shell origins reacted with H3PO4. Species of sea origin, such as corals and nacres, attracted a special interest in bone tissue engineering area. Nacre shells are built(More)
OBJECTIVES The aim of this study was to compare osseous healing characteristics of titanium implants coated with enamel-derived fluoride-substituted apatite (EFSA) or dentin-derived fluoride-substituted apatite (DFSA). METHODS Fluoride-substituted apatite was derived from extracted human teeth with calcination method at 850 degrees C. DFSA and EFSA were(More)
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