INTECIN   20395
INSTITUTO DE TECNOLOGIAS Y CIENCIAS DE LA INGENIERIA "HILARIO FERNANDEZ LONG"
Unidad Ejecutora - UE
artículos
Título:
Natural Hydroxyapatite-Titan Dioxide Bone Substitutes
Autor/es:
CRISTIAN MARTINEZ; GUNTA KRIEKE; JANIS LOCS; LIGA BERZUNA-CIMDINA-CIMDINA; LILIANA GARRIDO; ULISES GILABERT; ANDRES OZOLS
Revista:
Procedia Materials Science Journal
Editorial:
Elsevier
Referencias:
Lugar: Melbourne ; Año: 2015 vol. 8 p. 324 - 331
Resumen:
This paper aims to develop a bioceramic that actives the osteogenesis on the surface of Ti implants. This material is a mixture of natural hydroxyapatite, Ca5(PO4)3(OH) (HAB), with different weight fractions of TiO2, X. The HAB is obtained from pyrolyzed (900 ºC) and ground (45-100 μm) fresh bovine bone, which is mixed with TiO2, shaped by pressing (200 MPa), and sintered at 1000-1300 ºC per 2 hours. The electron microscopy observations and X-ray diffraction analysis show that increasing sintering temperature and X, promote the formation of a nearly continuous TiO2 matrix, with embedded grains of tri and tetra-calcium phosphates, products of HAB decomposition. Also, the process leads the formation of calcium titanate, CaTiO3, which is the phase responsible for the possible sought biological effect.