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KMID : 0362120120340030221
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Journal of Technologic Dentistry
2012 Volume.34 No. 3 p.221 ~ p.226
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Mechanical property of porous Ti implants by sintering method
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Kim Yung-Hoon
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Abstract
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Purpose: This study was performed to compare mechanical properties for sintering methods of porous Ti implants.
Methods: The specimens of Ti implant were fabricated by several sintering methods. One of them is spark plasma sintering(SPS). Another is electro discharge singering(EDS) and the other is high vacuum sintering(HVS). Mechanical properties of porous Ti implants were evaluated by universal testing machine(UTM) and their fracture surface was examined under a sanning electron microscope(SEM).
Results: The tensile strength was in a range of 71 to 230 MPa, and Young’s modulus was in a range of 11 to 21 Gpa. It matched with range of cortical bone.
Conclusion: Mechanical properties of porous Ti implants were similar to human bone. It was shown that sintering methods of spherical powders can efficiently produce porous Ti implants with various porosities. Porous metals will be commonly used in orthopedic and dental application despite of initial focus has been on bioceramics.
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KEYWORD
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implant, mechanical property, porous, sintering, strength
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