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Initial Changes of Implant Stability from Installation during Early Bone Healing

임플란트 식립 후 초기 안정성의 변화

  • Park, Chan-Jin (Department of Prosthodontics and Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University) ;
  • Kim, Dae-Gon (Department of Prosthodontics and Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University) ;
  • Cho, Lee-Ra (Department of Prosthodontics and Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University)
  • 박찬진 (강릉원주대학교 치과대학 치과보철학교실 및 구강과학연구소) ;
  • 김대곤 (강릉원주대학교 치과대학 치과보철학교실 및 구강과학연구소) ;
  • 조리라 (강릉원주대학교 치과대학 치과보철학교실 및 구강과학연구소)
  • Received : 2013.05.15
  • Accepted : 2013.09.25
  • Published : 2013.09.30

Abstract

The concept of implant stability was basically originated from the relative condition of bone-implant interface and has some meanings for evaluation of that interface. In addtion, it has been used for the investigation of initial bone healing process after fixture installation because a degree of micromotion around interface can affect unfavorable clinical results. The purpose of this study is to investigate the mode of initial bone healing from fixture installation through prospective trial. Thirty fixtures were consecutively installed in mandibles of 26 patients with single tooth loss area and then healing abutment were secured for one-stage surgery meothod. Resonance frequency analysis was performed with one week interval during 12 weeks and periapical radiographs were taken at each month. Although marginal bone level change was not shown through observation period (P>0.05), statistical difference of implant stability was shown through 4 and 6 week (P<0.05) and was not shown after 6 week (P>0.05) according to the bone quality. Initial bone healing process is a successive process of bone resorption and favorable bone healing result might be postulated at 4 week interval after installation through RFA.

골치유 기간 중 임플란트-골 계면에서 일정 수준 이상의 미세동요가 발생하게 되면 임플란트의 골유착이 방해받게 되므로 임플란트 식립 후 초기 골반응에 관해 임플란트 안정성은 하나의 지표가 된다. 본 연구의 목적은 임플란트 식립 후 전향적인 연구를 통해 초기 임플란트 안정성 변화를 추적하여 골치유 양상을 추론하고자 하였다. 총 26명의 환자에게 식립된 30개의 임플란트를 대상으로 하악골에 1회법으로 식립 직후 1주 간격으로 12주간 공진주파수분석을 시행하여 초기 안정성의 변화를 구하였으며 식립 직후와 1개월 간격으로 변연골 흡수 정도를 방사선학적 방법으로 측정하였다. 식립 직후와 각 치유기간 동안의 ISQ값 비교에서 식립 4주에서 6주사이에 골질에 따른 차이를 보였으나(P<0.05), 6주 이후에는 골질군 간에는 임플란트 안정성 변화에 차이가 없었다(P>0.05). 방사선학적 검사에서는 변연골의 차이가 관찰기간내에 유의하게 변화하지 않았다(P>0.05). 임플란트 식립 후 초기 골치유과정은 골흡수과정에 연속적인 과정으로 4주 이후 바람직한 골치유과정이 진행됨을 공진주파수분석으로 관찰할 수 있었다.

Keywords

References

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