Physicochemical characterization of two deproteinized bovine xenografts
Braz. oral res
;
22(1): 5-10, Jan.-Mar. 2008. ilus, graf
Artículo
en Inglés
| LILACS
| ID: lil-480576
ABSTRACT
Calcium phosphate salts, or more specifically hydroxyapatite, are products of great interest in the fields of medical and dental science due to their biocompatibility and osteoconduction property. Deproteinized xenografts are primarily constituted of natural apatites, sintered or not. Variations in the industrial process may affect physicochemical properties and, therefore, the biological outcome. The purpose of this work was to characterize the physical and chemical properties of deproteinized xenogenic biomaterials, Bio-Oss (Geistlich Biomaterials, Wolhuser, Switzerland) and Gen-Ox (Baumer S.A., Brazil), widely used as bone grafts. Scanning electron microscopy, infrared region spectroscopy, X-ray diffraction, thermogravimetry and degradation analysis were conducted. The results show that both materials presented porous granules, composed of crystalline hydroxyapatite without apparent presence of other phases. Bio-Oss presented greater dissolution in Tris-HCl than Gen-Ox in the degradation test, possibly due to the low crystallinity and the presence of organic residues. In conclusion, both commercial materials are hydroxyapatite compounds, Bio-Oss being less crystalline than Gen-Ox and, therefore, more prone to degradation.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Materiales Biocompatibles
/
Huesos
/
Sustitutos de Huesos
/
Materiales Dentales
/
Minerales
Límite:
Animales
Idioma:
Inglés
Revista:
Braz. oral res
Asunto de la revista:
Odontología
Año:
2008
Tipo del documento:
Artículo
/
Documento de proyecto
País de afiliación:
Brasil
Institución/País de afiliación:
Federal University of Rio de Janeiro/BR
/
Fluminense Federal University/BR
/
Paulista University/BR
/
Scientific Metrology Directory/BR
/
University of São Paulo/BR
Similares
MEDLINE
...
LILACS
LIS