Carvable calcium phosphate bone substitute material.
J Biomed Mater Res B Appl Biomater
; 83(1): 1-8, 2007 Oct.
Article
en En
| MEDLINE
| ID: mdl-17285607
This study investigated the use of partially set hydroxyapatite forming calcium phosphate cement as a carvable and mechanically stable bone substitute material. Hydroxyapatite-forming cements were made of either mechanically activated alpha-tricalcium phosphate or a mixture of tetracalcium phosphate and dicalcium phosphate anhydrous and setting was arrested up to 4 h post setting. The study showed that these partially set rigid samples of defined geometry could be carved into a desired shape when the degree of reaction was 30-40% and the relative porosity between 40 and 50%; samples are then expected to set completely after implantation in the presence of water or serum, having the same compressive strength as a continuously set calcium phosphate cement (up to 36 MPa). The development of compressive strength, phase composition, and crystallinity when varying production parameters of these partially "preset" bone substitute materials are presented for both cement systems.
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Banco de datos:
MEDLINE
Asunto principal:
Materiales Biocompatibles
/
Cementos para Huesos
/
Ensayo de Materiales
/
Fosfatos de Calcio
/
Sustitutos de Huesos
Tipo de estudio:
Evaluation_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
J Biomed Mater Res B Appl Biomater
Asunto de la revista:
ENGENHARIA BIOMEDICA
Año:
2007
Tipo del documento:
Article