Journal of Periodontal and Implant Science

Korean Academy of Periodontology (대한치주과학회)
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The effect of horizontal microgap location on the bone loss around 2-piece implants

2-piece 임플란트에서 미세 간극의 수평적 위치 변화에 따른 골 소실 비교 연구

  • Kim, Jae-Il (Department of Periodontology, College of Dentistry, Seoul National University) ;
  • Lee, Yong-Moo (Department of Periodontology, College of Dentistry, Seoul National University, Dental REsearch Institute, College of Dentistry, Seoul National University) ;
  • Yang, Byoung-Keon (Department of Periodontology, College of Dentistry, Seoul National University) ;
  • Ku, Young (Department of Periodontology, College of Dentistry, Seoul National University, Dental REsearch Institute, College of Dentistry, Seoul National University) ;
  • Chung, Chong-Pyoung (Department of Periodontology, College of Dentistry, Seoul National University, Dental REsearch Institute, College of Dentistry, Seoul National University) ;
  • Han, Soo-Boo (Department of Periodontology, College of Dentistry, Seoul National University, Dental REsearch Institute, College of Dentistry, Seoul National University) ;
  • Rhyu, In-Chul (Department of Periodontology, College of Dentistry, Seoul National University, Dental REsearch Institute, College of Dentistry, Seoul National University)
  • 김재일 (서울대학교 치과대학 치주과학교실) ;
  • 이용무 (서울대학교 치과대학 치주과학교실, 서울대학교 치과대학 치학연구소) ;
  • 양병근 (서울대학교 치과대학 치주과학교실) ;
  • 구영 (서울대학교 치과대학 치주과학교실, 서울대학교 치과대학 치학연구소) ;
  • 정종평 (서울대학교 치과대학 치주과학교실, 서울대학교 치과대학 치학연구소) ;
  • 한수부 (서울대학교 치과대학 치주과학교실, 서울대학교 치과대학 치학연구소) ;
  • 류인철 (서울대학교 치과대학 치주과학교실, 서울대학교 치과대학 치학연구소)
  • Published : 2004.03.30
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Abstract

2-piece 임플란트에서는 초기 치유 기간 동안 0.9-1.6mm의 골 소실이 일어나는데 2-piece 임플란트의 미세 간극과 그에 따른 생물학적 폭경의 형성이 중요한 원인이다. 최근 수직적으로 미세 간극의 위치를 변화시킴으로 골 소실의 양을 줄일 수 있다는 보고가 있다. 이번 실험의 목적은 미세 간극의 수평적 위치 변화에 따른 골 소실의 양을 비교하는데 있다. 하악에서 인접하여 최소 2개의 임플란트를 식립할 수 있는 7 무치악 부위에 총 15개의 Osseotitie XP 4/5를 식립하였다. 이때 임플란트의 상연이 주위 치조골과 일치하게 식립하였고 무작위로 선택하여 한 그룹(W군)에서는 wide diameter healing abutment를 연결하였고 다른 한 그룹(S 군)에서는 standard diameter healing abutment를 연결하였다. 3개월의 치유 기간후 보철 과정을 시작하였으며 이 때 healing abutment와 같은 크기의 prosthetic component를 이용하였다. 임플란트 식립 직후, 3개월의 치유 기간이 지난 보철 직전(Interval I)에, 보철 과정 직후(Interval II)에 각각 치근단 방사선 사진을 찍어 각 단계에서의 골 소실 양을 비교하였다. W 군의 경우 골 소실의 양이 Interval I에서 $1.60{\pm}0.78$, Interval I+II에서 $2.36{\pm}0.29$이었고 S 군에서는 Interval I에서 $1.5810{\pm}0.3030$, Interval I+II에서는 $1.7346{\pm}0.4199$이었다. W군에서는 Interval I와 I+II에서의 골 소실 양이 통계학적으로 유의할 만한 차이를 보였으며, Interval I+II에서의 W 군과 S 군에서의 골 소실 양도 통계학적으로 유의할 만한 차이를 나타내었다. Interval I에서는 두 그룹에서 골 소실의 차이가 없었는데 이는 1 stage surgery시 healing abutment 주위로 mucoperiosteal flap 접합의 어려움 때문으로 생각된다. 한편 Interval II에서는 abutment manipulation 등의 과정이 추가적인 골 소실을 야기한 것으로 생각된다. Interval I+II에서 W 군과 S 군 사이의 골 소실 양 차이는 미세 간극의 수평적 위치 변화의 양과 유사한 결과를 나타내었는데 이로 미루어 미세 간극의 수평적 이동은 임플란트 주위의 골 소실 양에 영향을 미칠 수 있다고 생각된다.

Keywords

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