치과용 어버트먼트 나사의 반복조임과 풀림 후 표면형상
Surface Morphology of Abutment Screw Surface after Repeated Tightening and Loosening
박찬익, 정용훈, 최한철, 고영무, 은상원, 정재헌,
소속 상세정보
박찬익 ( Park Chan-Ik ) - 조선대학교 치의학전문대학원 보철학교실
정용훈 ( Jeong Yong-Hoon ) - 조선대학교 치의학전문대학원 치과재료학교실 및 생체재료나노계면활성화센터
최한철 ( Choe Han-Cheol ) - 조선대학교 치의학전문대학원 치과재료학교실 및 생체재료나노계면활성화센터
고영무 ( Ko Yeong-Mu ) - 조선대학교 치의학전문대학원 치과재료학교실 및 생체재료나노계면활성화센터
은상원 ( Eun Sang-Won ) - 한국폴리텍V대학 신소재응용학과
정재헌 ( Chung Chae-Heon ) - 조선대학교 치의학전문대학원 보철학교실
KMID : 0362220100370040349
Abstract
In this study, to investigate surface morphology of abutment screw surface after repeated loosening and tightening, abutment screws, abutments and fixtures were used respectively for the experiment. Titanium nitride(TiN) and tungsten carbide(WC) film coating were carried out on the abutment screw using electron beam-physical vapor deposition (EB-PVD) and sputtering methods, respectively. In order to observe the coating surface of the abutment screw after loosening/tightening, each coated abutment was secured to the implant fixture by each abutment screw with recommended torque value using a digital torque controller and was repeatedly delivered and removed by 1 time and 20 times, respectively. The surfaces of specimens were observed by field emission scanning electron microscope(FE-SEM) and energy dispersive x-ray spectroscopy(EDS) at the abutment screw. In the case of TiN and WC coated abutment surface, scratch formed by machine was improved and decreased. After 20 times of loosening/tightening, the abutment screw surface showed debris like TiN and WC particles. The surface morphology of the abutment screw after tightening and loosening depends on coating materials such as TiN and WC film.
키워드
Implant system; Abutment screw; EB-PVD; TiN and WC coating
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