The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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BICOMPATIBILITY OF BICOMTALS IN RABBIT BONE

임플란트 생체금속들과 골조직간의 생체적합도에 관한 연구

  • Han, Chong-Hyun (Dept. of Prosthodontics, College of Dentistry, Yonsei University) ;
  • Hoe, Seong-Joo (Dept. of Prosthodontics, College of Dentistry, Seoul National University) ;
  • Chung, Chong-Pyong (Dept. of Periodontics, College of Dentistry, Seoul National University) ;
  • Ku, Young (Dept. of Periodontics, College of Dentistry, Seoul National University) ;
  • Rhyu, In-Chul (Dept. of Periodontics, College of Dentistry, Seoul National University) ;
  • Choi, Yong-Chang (Catholic University of Korea Medical School st. Mary Hospital Dept. of Dentistry)
  • 한종현 (연세대학교 치과대학 보철학교실(영동세브란스)) ;
  • 허성주 (서울대학교 치과대학 보철학교실) ;
  • 정종평 (서울대학교 치과대학 치주과학교실) ;
  • 구영 (서울대학교 치과대학 치주과학교실) ;
  • 류인철 (서울대학교 치과대학 치주과학교실) ;
  • 최용창 (가토릭의대 치과학교실(여의도 성모))
  • Published : 1997.11.01
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Abstract

Screw-shaped implants of commercially pure (c.p.) titanium, c.p. niobium, c.p. zirconium, and stainless steel(Sus 304) were inserted in the rabbit tibial bone over 12 weeks of follow-up. New developed torque gauge instrument was used to evaluate the implant holding power and a image analysis program coupled to a microscope was used for histomorphometry. The three best consecutive threads of each implant were measured. Quantitative analyses at 12 weeks revealed a partial bone contact to the four kinds investigated metals. There were no obvious adverse tissue reactions to any of the biomaterials. At 12 weeks the average removal torques for titanium, niobium and zirconium were better than that needed for Sus 304 screws, on the other hand high score of bony contact ratio of titanium and niobium were showed in comparison to those of zirconium and Sus 304. There was no significant differences in the amount of interfacial bone of zirconium and Sus 304 whereas there was significant difference in the torque forces of niobium and Sus 304. Three months after implant insertion, the average removal torque was 6.64 Ncm for the titanium, 6.57 Ncm for the niobium, 6.38 Ncm for the zirconium, and 4.25 Ncm for the Sus 304. On average bone contacts there were 51.24% in the titanium, 48.19% in the niobium, 31.79% in the zirconium, 23.54% in the Sus 304. Biocompatibility of the titanium, niobium and zirconium was acceptable level in comparison to the Sus 304.

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