Novel Calcium Phosphate Glass for Hard-Tissue Regeneration / 대한치주과학회지
The Journal of the Korean Academy of Periodontology
;
: 273-298, 2008.
Artigo
em Inglês
| WPRIM
| ID: wpr-148375
ABSTRACT
PURPOSE:
The aim of this review is to introduce a novel bone-graft material for hard-tissue regeneration based on the calcium phosphate glass(CPG). MATERIALS ANDMETHODS:
CPG was synthesized by melting and subsequent quenching process in the system of CaO-CaF2-P2O5-MgO-ZnO having a much lower Ca/P ratio than that of conventional calcium phosphates such as HA or TCP. The biodegradability and bioactivity were performed. Effects on the proliferation, calcification and mineralization of osteoblast-like cells were examined in vitro. Influence in new bone and cementum formations was investigated in vivo using calvarial defects of Sprague-Dawley rats as well as 1-wall intrabony defect of beagle dogs. The application to the tissue-engineered macroporous scaffold and in vitro and in vivo tests was explored.RESULTS:
The extent of dissolution decreased with increasing Ca/P ratio. Exposure to either simulated body fluid or fetal bovine serum caused precipitation on the surface. The calcification and mineralization of osteoblast-like cells were enhanced by CPG. CPG promoted new bone and cementum formation in the calvarial defect of Sprague-Dawley rats after 8 weeks. The macroporous scaffolds can be fabricated with 500~800micrometer of pore size and a three-dimensionally interconnected open pore system. The stem cells were seeded continuously proliferated in CPG scaffold. Extracellular matrix and the osteocalcin were observed at the 2nd days and 4th week. A significant difference in new bone and cementum formations was observed in vivo (p<0.05).CONCLUSION:
The novel calcium phosphate glass may play an integral role as potential biomaterial for regeneration of new bone and cementum.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Regeneração
/
Sementes
/
Células-Tronco
/
Líquidos Corporais
/
Fosfatos de Cálcio
/
Osteocalcina
/
Cálcio
/
Ratos Sprague-Dawley
/
Cemento Dentário
/
Matriz Extracelular
Limite:
Animais
Idioma:
Inglês
Revista:
The Journal of the Korean Academy of Periodontology
Ano de publicação:
2008
Tipo de documento:
Artigo
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