마이크로패터닝을 부여한 임플란트 주변골에서의 하중 분포에 관한 유한요소분석법적 연구

Finite Element Analysis of Stress Distribution around the Micro-Patterned Implants

  • 허배녕 (강릉대학교 치과대학 치과보철학교실 및 구강과학연구소) ;
  • 김대곤 (강릉대학교 치과대학 치과보철학교실 및 구강과학연구소) ;
  • 박찬진 (강릉대학교 치과대학 치과보철학교실 및 구강과학연구소) ;
  • 조리라 (강릉대학교 치과대학 치과보철학교실 및 구강과학연구소)
  • Hur, Bae-Young (Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Kim, Dae-Gon (Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Park, Chan-Jin (Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung National University) ;
  • Cho, Lee-Ra (Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Kangnung National University)
  • 투고 : 2007.12.23
  • 심사 : 2008.03.25
  • 발행 : 2008.03.30

초록

골조직이 자라 들어갈 수 있는 적절한 크기의 마이크로패터닝을 부여하면 강하고 지속적인 골유착을 이룰 수 있는 생역학적 결합을 이룰 수 있다. 또한 마이크로패터닝을 통해 골조직과 접촉하는 면적을 증가시킴으로써 하중을 적절히 분산시킬 수도 있다. 본 연구에서는 마이크로패터닝의 형태와 크기에 따른 응력의 분산에 대해 연구하였다. 나사 하나에서의 하중을 연구하기 위해 2차원 유한요소분석법을 이용하였다. 임플란트는 무한히 긴 피질골에 100% 접촉하며 골-임플란트 계면은 고정된 것으로 경계조건을 설정한 후 마이크로패터닝의 위치와 수에 따라 5군으로 나누어 축력을 가한 후 최대응력과 응력의 분산양상을 비교하였다. 연구 결과, 마이크로패터닝을 부여하면 일반적인 나사에 비해 응력을 보다 넓게 분산시켰으며 나사의 하방에 마이크로패터닝을 부여한 것이 상방에 부여한 것보다 더 고르게 응력을 분산시켰다. 3개의 마이크로패터닝을 부여한 군이 2개의 마이크로패터닝을 부여한 군에 비해 응력을 넓게 분산시켰으나 응력이 집중되는 부위가 나타났다. 이상의 결과를 통해 마이크로패터닝을 부여하면 응력의 분산효과가 있으며 특히 나사 하방에 부여하는 것이 더 큰 효과를 냄을 알 수 있었다.

과제정보

연구 과제 주관 기관 : 강릉대학교 치과병원

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