Study on the setting property and compressive strength of β-TCP/α-CSH combined bone graft
- VernacularTitle:β-TCP/α-CSH复合植骨材料固化性能与力学强度
- Author:
Ke ya MAO
1
;
Jiang tao LI
2
;
Yun YANG
2
;
Xi jun HOU
1
;
Mao hua LIANG
1
;
Ji fang WANG
1
;
Ming kui DU
1
;
Zheng WANG
1
;
Ning WEN
1
;
Yan WANG
1
Author Information
1. Department of Orthopedics, General Hospital of People’s Liberation Army
2. Technical Institute of Physics and Chemistry of Chinese Academy of Science
- Publication Type:Journal Article
- Keywords:
β-TCP;
α-CSH;
Combined bone grafts;
Setting;
Compressive strength
- From:
Journal of Medical Biomechanics
2010;25(6):E456-E459
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the setting property and compressive strength of β-TCP (β-tricalcium phosphate)/α-CSH (α-calcium sulphate hemihydrate) combined bone graft. Method β TCP/α CSH combined bone graft and distilled water were mixed with different ratio: 1 g∶0.1 mL、1 g∶0.2 mL、1 g∶0.3 mL、1 g∶0.4 mL、1 g∶0.5 mL, respectively. The initial setting time (Ti), final setting time (TF), compressive strength were recorded, and the X-ray diffraction (XRD) and the scanning electron microscope (SEM) were examined. Results The initial and final setting time of combined bone graft increased along with the increase of solid/liquid ratio. The Ti and TF were (4.6±1.3) min and (13.1±2.9) min respectively when the solid/liquid ratio was 1 g∶0.2 mL. The average compressive strength was 7.86 MPa in one day after setting, which was about two times higher than that of β-TCP alone. The XRD results showed that no other materials were produced except that α-CSH was transformed to CSD in the setting process. The SEM results indicated that thick CSD granules were adhered to the porous surfaces of β-TCP granules after setting. Conclusions The setting time and compressive strength of β-TCP/α-CSH combined bone graft could be adjusted by the different solid/liquid ratio.
