The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지

THE EFFECT OF VARIOUS SURFACE TREATMENT METHODS ON THE OSSEOINTEGRATION

임플랜트의 표면처리 방법이 골유착에 미치는 영향에 관한 연구

  • Choi Jeong-Won (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Kim Kwang-Nam (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Heo Seong-Joo (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Chang Ik-Tae (Department of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Han Chong-Hyun (Department of Prosthodontics, College of Dentistry, Yonsei University(Youngdong Severance Hospital)) ;
  • Baek Hong-Gu (Department of Materials Science and Engineering, Yonsei University) ;
  • Choi Yong-Chang (Department of Dentistry, College of Medicine, Catholic University(Yeoeuido st. Mary's Hospital)) ;
  • Wennerberg Ann (University of Gothenburg, Department of Handicap Research)
  • 최정원 (서울대학교 치과대학 치과보철학교실) ;
  • 김광남 (서울대학교 치과대학 치과보철학교실) ;
  • 허성주 (서울대학교 치과대학 치과보철학교실) ;
  • 장익태 (서울대학교 치과대학 치과보철학교실) ;
  • 한종현 (연세대학교 치과대학 치과보철학교실 (영동세브란스 병원)) ;
  • 백홍구 (연세대학교 공과대학 재료공학부) ;
  • 최용창 (가톨릭대학교 의과대학 치과학교실(여의도 성모병원)) ;
  • Published : 2001.02.01
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Abstract

The purpose of this study was to compare the effects of various surface treatments by measuring removal torque on bone healing around titanium implants. 40 Screw-shaped cp titanium implants with length of 4mm, outer diameter of 3.75mm, and pitch-height of 0.5mm were used Group 1 was left as machined(control), Group 2 was blasted with $50{\mu}m\;Al_2O_3$, group 3 was blasted and etched in etching solution($NH_4OH : H_2O_2:H_2O= 1 : 1 : 5$) at $90^{\circ}C$ for 1 minute group 4 was blasted and oxidated under pure oxygen at $800^{\circ}C$. The implant surface roughness was analyzed with SEM and CLSM(Confocal Laser Scanning Microscope) and implants were placed in proximal tibial metaphysis of 10 New Zealand White rabbits. After 3 months of healing period, removal torque of each implant was measured to compare bone healing around implant. The results obtained were as follows 1. In SEM view, blasting increased the roughness of the surface, but etching of that rough surface decreased the roughness due to the removal of the tip of the peak. Oxidation also decreased the roughness due to formation of needle-like oxide grains on the implant surface. 2. The Sa value from CLSM was least in the machined group($0.47{\mu}m$), greatest in blasted group($1.25{\mu}m$), and the value decreased after etching($0.91{\mu}m$) and oxidation($0.94{\mu}m$). 3. The removal torque of etched group(24.5Ncm) was greater than that of machined group(16.7Ncm) (P<0.05), and was greatest in the oxidated group(40.3Ncm) and the blasted group(34.7Ncm).

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