Characterization of biomaterials commonly used in dentistry for bone augmentation by X-ray and electron techniques

LIMANDRI S; FERNÁNDEZ BORDÍN SANTIAGO P; GERSBERG M; BRITO L; RAFAEL GUSTAVO OLIVEIRA; GALVÁN JOSA, VICTOR M.

X-RAY SPECTROMETRY

JOHN WILEY & SONS LTD

Lugar: Londres; Año: 2017 vol. 46 p. 27 - 27

0049-8246

ydroxyapatite (HA), beta-tricalcium phosphate and bioactive glasses are commonly used as reabsorbable biomaterials, mainly in orthopaedics and dentistry. The performance of each material depends on many factors, in particular, on their chemical and phase composition, microstructure, granule size and pore volume. For this reason, it is important to have a full characterization that allows correlating these properties with the material biological behaviour. In this work, three commercial samples of materials currently used in dentistry as bone substitutes were characterized. Granules corresponding to bovine and synthetic HA and bioactive glass 45S5 type were studied by scanning electron microscopy, conventional and synchrotron radiation X-ray diffraction and X-ray fluorescence. The specific surface area was also obtained by the Brunauer, Emmett and Teller method. We observed that Ca/P molar ratios for both HAs are higher than the value corresponding to the stoichiometric HA. The coheren