Nonlinear Stress Analysis of Titanium Implants by Finite Element Method

• NAGASAWA Sakae

  Department of Dental Materials, Matsumoto Dental University Division of Biomaterials, Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University

• HAYANO Keigo

  Department of Dental Materials, Matsumoto Dental University

• NIINO Tooru

  Department of Dental Materials, Matsumoto Dental University

• YAMAKURA Kazunori

  Department of Dental Materials, Matsumoto Dental University

• YOSHIDA Takamitsu

  Department of Dental Materials, Matsumoto Dental University Division of Implantology, Institute for Oral Science, Matsumoto Dental University

• MIZOGUCHI Toshihide

  Division of Implantology, Institute for Oral Science, Matsumoto Dental University

• TERASHIMA Nobuyosi

  Department of Dental Materials, Matsumoto Dental University

• TAMURA Kaoru

  Division of Biomaterials, Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University

• ITO Michio

  Department of Dental Materials, Matsumoto Dental University Division of Biomaterials, Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University

• YAGASAKI Hiroshi

  Division of Biomaterials, Department of Hard Tissue Research, Graduate School of Oral Medicine, Matsumoto Dental University Division of Implantology, Institute for Oral Science, Matsumoto Dental University

• KUBOTA Osamu

  Yoshioka Co. Ltd.

• YOSHIMURA Masayuki

  Yoshioka Co. Ltd.

抄録

With use of dental implants on the rise, there is also a tandem increase in the number of implant fracture reports. To the end of investigating the stress occurring in implants, elasticity and plasticity analyses were performed using the finite element method. The following results were obtained:<BR>(1) With one-piece type of implants of 3.3 mm diameter, elasticity analysis showed that after applying 500 N in a 45-degree direction, stress exceeding 500 MPa—which is the proof stress of grade 4 pure titanium—occurred. This suggested the possibility of fatigue destruction due to abnormal occlusal force, such as during bruxism.<BR>(2) With two-piece type of implants that can tolerate vertical loading of 5,000 N, plasticity analysis suggested the possibility of screw area fracture after applying 500 N in a 45-degree direction.<BR>(3) On the combined use of an abutment and a fixture from different manufacturers, fracture destruction of even Ti-6Al-4V, which has a high degree of strength, was predicted.

収録刊行物

• Dental Materials Journal

  Dental Materials Journal 27 (4), 633-639, 2008

  一般社団法人　日本歯科理工学会

キーワード

• Finite element method
• Titanium implant
• Nonlinear stress analysis

詳細情報

• CRID: 1390001204715358592
• NII論文ID: 110006861875
• NII書誌ID: AA10443149
• DOI: 10.4012/dmj.27.633
• COI: 1:STN:280:DC%2BD1cnktlagsA%3D%3D
• ISSN: 18811361
• ISSN: 02874547
• PubMed: 18833779
• Web Site: https://www.jstage.jst.go.jp/article/dmj/27/4/27_4_633/_pdf
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10745221
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • PubMed
  • NDL-Digital
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可