Abstract
In recent years, artificial biological materials have been commonly used for the treatment of bone tissue defects caused by trauma, tumors, or surgical stress. Although tricalcium phosphate (TCP) is a promising absorbent bone tissue reconstruction biomaterial, it has been reported that its biocompatibility and osteoconductivity depend on its preparation method and sintering temperature. In addition, although it is thought that the microenvironment produced by the extracellular matrix plays an important role in cell growth and differentiation, there have been few studies on how the geometric structure of artificial biological materials affects cells. In the present study, a new honeycomb TCP scaffold containing through-holes with diameters of 300 μm has been developed. The influence of the sintering temperature on the crystal structure and material properties of the honeycomb TCP scaffold was investigated using scanning electron microscopy and X-ray diffraction. Its biocompatibility and osteoconductivity were also evaluated by implantation into experimental animals. It was found that a β-TCP scaffold sintered at 1200°C exhibited high biocompatibility and osteoconductivity, and when it was loaded with BMP-2, it exhibited both osteoconductivity and osteoinductivity, promoting rapid bone formation in both ectopic and orthotopic areas. It is thus a highly promising bone reconstruction material that is expected to find clinical applications.
| Original language | English |
|---|---|
| Pages (from-to) | 2952-2960 |
| Number of pages | 9 |
| Journal | Journal of Biomedical Materials Research - Part A |
| Volume | 102 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2014 |
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Keywords
- bone
- geometric structure
- honeycomb TCP
- scaffold
- sintering temperature
ASJC Scopus subject areas
- Metals and Alloys
- Biomedical Engineering
- Biomaterials
- Ceramics and Composites
- Medicine(all)
Cite this
Effect of geometry and microstructure of honeycomb TCP scaffolds on bone regeneration. / Takabatake, Kiyofumi; Yamachika, Eiki; Tsujigiwa, Hidetsugu; Takeda, Yasushi; Kimura, Mariko; Takagi, Shin; Nagatsuka, Hitoshi; Iida, Seiji.
In: Journal of Biomedical Materials Research - Part A, Vol. 102, No. 9, 2014, p. 2952-2960.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of geometry and microstructure of honeycomb TCP scaffolds on bone regeneration
AU - Takabatake, Kiyofumi
AU - Yamachika, Eiki
AU - Tsujigiwa, Hidetsugu
AU - Takeda, Yasushi
AU - Kimura, Mariko
AU - Takagi, Shin
AU - Nagatsuka, Hitoshi
AU - Iida, Seiji
PY - 2014
Y1 - 2014
N2 - In recent years, artificial biological materials have been commonly used for the treatment of bone tissue defects caused by trauma, tumors, or surgical stress. Although tricalcium phosphate (TCP) is a promising absorbent bone tissue reconstruction biomaterial, it has been reported that its biocompatibility and osteoconductivity depend on its preparation method and sintering temperature. In addition, although it is thought that the microenvironment produced by the extracellular matrix plays an important role in cell growth and differentiation, there have been few studies on how the geometric structure of artificial biological materials affects cells. In the present study, a new honeycomb TCP scaffold containing through-holes with diameters of 300 μm has been developed. The influence of the sintering temperature on the crystal structure and material properties of the honeycomb TCP scaffold was investigated using scanning electron microscopy and X-ray diffraction. Its biocompatibility and osteoconductivity were also evaluated by implantation into experimental animals. It was found that a β-TCP scaffold sintered at 1200°C exhibited high biocompatibility and osteoconductivity, and when it was loaded with BMP-2, it exhibited both osteoconductivity and osteoinductivity, promoting rapid bone formation in both ectopic and orthotopic areas. It is thus a highly promising bone reconstruction material that is expected to find clinical applications.
AB - In recent years, artificial biological materials have been commonly used for the treatment of bone tissue defects caused by trauma, tumors, or surgical stress. Although tricalcium phosphate (TCP) is a promising absorbent bone tissue reconstruction biomaterial, it has been reported that its biocompatibility and osteoconductivity depend on its preparation method and sintering temperature. In addition, although it is thought that the microenvironment produced by the extracellular matrix plays an important role in cell growth and differentiation, there have been few studies on how the geometric structure of artificial biological materials affects cells. In the present study, a new honeycomb TCP scaffold containing through-holes with diameters of 300 μm has been developed. The influence of the sintering temperature on the crystal structure and material properties of the honeycomb TCP scaffold was investigated using scanning electron microscopy and X-ray diffraction. Its biocompatibility and osteoconductivity were also evaluated by implantation into experimental animals. It was found that a β-TCP scaffold sintered at 1200°C exhibited high biocompatibility and osteoconductivity, and when it was loaded with BMP-2, it exhibited both osteoconductivity and osteoinductivity, promoting rapid bone formation in both ectopic and orthotopic areas. It is thus a highly promising bone reconstruction material that is expected to find clinical applications.
KW - bone
KW - geometric structure
KW - honeycomb TCP
KW - scaffold
KW - sintering temperature
UR - http://www.scopus.com/inward/record.url?scp=84904822762&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84904822762&partnerID=8YFLogxK
U2 - 10.1002/jbm.a.34966
DO - 10.1002/jbm.a.34966
M3 - Article
C2 - 24115688
AN - SCOPUS:84904822762
VL - 102
SP - 2952
EP - 2960
JO - Journal of Biomedical Materials Research - Part A
JF - Journal of Biomedical Materials Research - Part A
SN - 1549-3296
IS - 9
ER -