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Fracture Analysis of Porous Titanium for Dental Implant Fabricated by Space Holder Process  

Lee, Seung-Mi (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
Jang, Jin-Man (Advanced Process and Materials R&D Group, Korea Institute of Industrial Technology)
Lee, Won-Sik (Advanced Process and Materials R&D Group, Korea Institute of Industrial Technology)
Byeon, Jai-Won (Department of Materials Science and Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of Applied Reliability / v.16, no.2, 2016 , pp. 104-109 More about this Journal
Abstract
Purpose: The purpose of this study is to analyze fracture behavior and failure mechanism of porous titanium for dental implant fabricated by space holder process. Method: Three porous titanium specimens with a specific volume fraction of open pore were test by 3 point bending and compression stress condition, respectively. Fracture appearance was observed by scanning electron microscope and discussed in relation with oxygen content. Results: For compression-tested specimens, two specimen showed brittle failure, while the other one showed normal failure after deformation. High oxygen content was detected in the brittle-fractured specimen. Several micro-cracks initiated at the struts propagated down to the bottom of the specimen resulting in normal failure. Conclusion: Oxygen contamination during the fabrication process can leads brittle premature failure, and hence quality problem of the porous titanium for dental implant.
Keywords
Failure Analysis; Production Quality; Porous Titanium; Implant; Brittle Fracture;
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