대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)

  • 제55권3호
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  • Pages.251-257
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  • 2017
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  • 0301-2875(pISSN)
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  • 2005-3789(eISSN)
대한치과보철학회 (The Korean Academy of Prosthodonitics)
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내측 연결 임플란트에서 지대주 내부길이가 나사 풀림에 미치는 영향

Influence of internal connection length on screw loosening in internal connection implants

  • 김지선 (연세대학교 치과대학 보철학교실) ;
  • 박영범 (연세대학교 치과대학 보철학교실) ;
  • 최현민 (연세대학교 치과대학 보철학교실) ;
  • 김성태 (서울대학교 치과대학 치주학교실) ;
  • 김현철 (부산대학교 치과대학 보존학교실) ;
  • 김선재 (연세대학교 강남세브란스병원 치과보철과) ;
  • 문홍석 (연세대학교 치과대학 보철학교실) ;
  • 이재훈 (연세대학교 치과대학 보철학교실)
  • Kim, Ji-Sun (Department of Prosthodontics, Yonsei University College of Denistry) ;
  • Park, Young-Bum (Department of Prosthodontics, Yonsei University College of Denistry) ;
  • Choi, Hynmin (Department of Prosthodontics, Yonsei University College of Denistry) ;
  • Kim, Sungtae (Department of Periodontology, Dental Research Institute, Seoul National University School of Dentistry) ;
  • Kim, Hyeon Cheol (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Kim, Sun Jai (Department of Prosthodontics, Gangnam Severance Dental Hospital, College of Dentistry, Yonsei University) ;
  • Moon, Hong-Seok (Department of Prosthodontics, Yonsei University College of Denistry) ;
  • Lee, Jae-Hoon (Department of Prosthodontics, Yonsei University College of Denistry)
  • 투고 : 2017.02.20
  • 심사 : 2017.06.19
  • 발행 : 2017.07.31
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초록

목적:본 연구에서는 long internal connection 형태의 임플란트 지대주를 내부 연결 길이에 변화를 주어 임플란트-지대주 결합부의 안정성을 비교 평가해 보고자 하였다. 재료 및 방법: Long internal connection의 임플란트(Replus system, $4.7{\times}11.5mm$)를 각각 지대주의 길이에 따라 4개의 군(1, 2, 3, 4 mm 군)으로 나누었고 총 20개의 시편을 사용하였다. 시편을 레진에 매몰하여 고정시키고 100 N의 힘으로 임플란트 장축에 대해 30도의 각도에서 $1.0{\times}10^6$ 번의 반복하중을 가한 후 하중 전 후의 풀림회전력의 차이를 계산하여 95% 유의수준에서 Kruskal-Wallis 검정 방법을 통해 통계 분석하였다. 결과:지대주 내부 길이에 따른 풀림 회전력의 통계적 유의성은 나타나지 않았으며 (P > .05) 어떤 시편에서도 완전한 나사 풀림이나 나사 파절은 관찰되지 않았다. 결론: 내측 연결 임플란트에서 지대주 내부길이에 따른 나사 풀림의 정도는 차이가 나지 않았다.

Purpose: The purpose of this study was to evaluate whether the internal abutment length affected screw stability in an internal connection implant. Materials and methods: Twenty long internal connection implants (Replus system, $4.7{\times}11.5mm$) were selected for this investigation. Abutments were assigned to four groups depending on the length of the internal connection (abutments with internal lengths of 1, 2, 3, and 4 mm, respectively). Each implant fixture specimen was embedded in resin medium and connected to an abutment with an abutment screw. A load of 100 N, applied at an angle of $30^{\circ}$ to the long axis of the implant, was repeated for $1.0{\times}10^6$ cycles. Reverse torque values (RTV) were recorded before and after loading, and the change in RTV was calculated. Data were analyzed with the Kruskal-Wallis test. Results: The change in RTV was not significantly different among the groups (P>.05). Screw loosening and fractures were not observed in any groups, and joint stability was maintained. Conclusion: The internal length of the abutment may not significantly affect the degree of screw loosening.

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피인용 문헌

  1. Abutment screw loosening in implants: A literature review vol.9, pp.11, 2020, https://doi.org/10.4103/jfmpc.jfmpc_1343_20