Journal of the Korean Association of Oral and Maxillofacial Surgeons

The Korean Association of Oral and Maxillofacial Surgeons (대한구강악안면외과학회)
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THE EFFECT OF A CHITOSAN COATING OF DENTAL IMPLANT ON THE SHOCK ABSORPTION UNDER IMPACT TEST

키토산으로 표면처리된 인공치아의 충격전달에 관한 연구

  • Kim, Ki-Hong (Dept. of Oral & Maxillofacial Surgery, Medical College, Hallym University) ;
  • Lee, Yong-Chan (Dept. of Oral & Maxillofacial Surgery, Medical College, Hallym University) ;
  • Cho, Byoung-Ouck (Dept. of Oral & Maxillofacial Surgery, Medical College, Hallym University) ;
  • Choi, Kui-Won (KIST Biomedical Research Center) ;
  • Kwon, Ick-Chan (KIST Biomedical Research Center) ;
  • Bae, Tae-Soo (KIST Biomedical Research Center)
  • 김기홍 (한림대학교 의과대학 치과학교실) ;
  • 이용찬 (한림대학교 의과대학 치과학교실) ;
  • 조병욱 (한림대학교 의과대학 치과학교실) ;
  • 권익찬 (한국과학기술연구원 의과학센터) ;
  • 최귀원 (한국과학기술연구원 의과학센터) ;
  • 배태수 (한국과학기술연구원 의과학센터)
  • Published : 2001.02.28
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Abstract

With the object of providing a temporary artificial periodonal ligament-like membrane around the dental implant, 10 Branemark type implants were coated with commercially available chitosan(Fluka Co., Buchs, Switzerland) which has a molecular weight of 70,000 and 80% deacetylation degree. Once this bioactive hydrophillic polymer(chitosan) contacts with blood or wound fluids, it becomes swollen and penetrates into the adjacent cancellous bone. Thus the interface between implant and surrounding bone is completely filled with chitosan. This tight junction in early healing phase enhances primary stability. The chitosan coated dental implants were implanted into the fresh patella bones from porcine knees, since the thickness of cortical bone is relatively even and their cancellous structure is homogenous. To test the shock absorbing effect, 1mm delta-rogette strain gage was installed behind the implant. The results showed 1. The principal strain peak value directed to the impact of coated implant was 0.064 0.018(p<0.05) and that of uncoated implant was 0.095(0.032 p<0.05). 2. The peak time delay of coated implant was 0.056sec(0.011 p<0.05) and that of uncoated implant was 0.024sec(0.009 p<0.05). It can be reasoned from this results that the chitosan coating has a shock absorbing effect comparable with a temporary artificial periodontal ligament.

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