Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
권호 표지

Contact non-linear finite element model analysis of initial stability of mini implant

접촉 유한요소모델을 이용한 미니 임플란트의 초기 응력분포 연구

  • Yoon, Hyun-Joo (Department of Periodontology, Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Jung, Ui-Won (Department of Periodontology, Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Lee, Jong-Suk (G.O.Net Dental Clinic) ;
  • Kim, Chang-Sung (Department of Periodontology, Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Kim, Jung-Moon (Ortholution Co., Ltd) ;
  • Cho, Kyoo-Sung (Department of Periodontology, Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Kim, Chong-Kwan (Department of Periodontology, Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Choi, Sung-Ho (Department of Periodontology, Oral Science Research Center, College of Dentistry, Yonsei University)
  • 윤현주 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 정의원 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 이종석 (고우넷 치과 의원) ;
  • 김창성 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 김정문 ((주)오솔루션) ;
  • 조규성 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 김종관 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소) ;
  • 최성호 (연세대학교 치과대학 치주과학교실, 치주조직재생연구소)
  • Published : 2007.12.31
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Abstract

Mini implants had been used provisionally for the healing period of implants in the beginning. But it becomes used for the on-going purpose, because it is simple to use, economic and especially suitable for the overdenture. But there is few studies about the stability of mini implants, that is most important factor for the on-going purpose, and particularly the implant parameters affecting the initial stability. The purpose of this study was to evaluate the stress and the strain distribution pattern of immediate-loaded screw type orthodontic mini-implant and the parameters affecting the initial stability of immediate-loaded mini-implant. Two dimensional finite element models were made and contact non-linear finite element analysis was performed. The magnitude and distribution of Von Mises stresses were evaluated. The obtained results were as follows: 1. The stress was concentrated on the thread tip of an implant in the cortical bone. 2. The direction of load is the most important factor for the stress distribution in cortical bone. 3. The diameter of an implant is the most important factor for the stress distribution in the trabecular bone. In conclusion, if the horizontal load vector is successfully controlled, mini-implants, which diameter is under 3mm, can be used for the on-going purpose.

Keywords

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