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내측 연결 임플란트에서 지대주 내부길이가 나사 풀림에 미치는 영향

Other Titles
 Influence of internal connection length on screw loosening in internal connection implants 
Authors
 Ji-Sun Kim  ;  Young-Bum Park  ;  Hynmin Choi  ;  Sungtae Kim  ;  Hyeon Cheol Kim  ;  Sun Jai Kim  ;  Hong-Seok Moon  ;  Jae-Hoon Lee 
Citation
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지), Vol.55(3) : 251-257, 2017 
Journal Title
 Journal of Korean Academy of Prosthodontics (대한치과보철학회지) 
ISSN
 0301-2875 
Issue Date
2017
Keywords
Screw loosening ; Reverse torque ; Internal connection implant ; Internal connection length
Abstract
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 × 11.5 mm) 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􀆆to the long axis of the implant, was repeated for 1.0 × 106 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. (J Korean Acad Prosthodont 2017;55:251-7)
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/160839
DOI
10.4047/jkap.2017.55.3.251
Appears in Collections:
1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Prosthodontics (보철과학교실)
Yonsei Authors
김선재(Kim, Sun Jai) ; 문홍석(Moon, Hong Seok) ; 박영범(Park, Young Bum) ; 이재훈(Lee, Jae Hoon)
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