Journal of Applied Reliability (한국신뢰성학회지:신뢰성응용연구)

The Korean Reliability Society (한국신뢰성학회)
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Fracture Analysis of Porous Titanium for Dental Implant Fabricated by Space Holder Process

Space holder 공정으로 제조된 치과 임플란트용 타이타늄 다공체의 파손 분석

  • 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)
  • 이승미 (서울과학기술대학교 신소재공학과) ;
  • 장진만 (한국생산기술연구원) ;
  • 이원식 (한국생산기술연구원) ;
  • 변재원 (서울과학기술대학교 신소재공학과)
  • Received : 2016.04.28
  • Accepted : 2016.05.13
  • Published : 2016.06.25
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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

References

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