표면 처리 방법에 따른 타이타늄의 미세 표면 거칠기, 표면 젖음성, fibronectin 흡착량에 미치는 영향

  • Shin Hwa-Sub (Department of Advanced Prosthodontics, Graduate School of Clinical Dentistry, Korea University) ;
  • Kim Young-Su (Department of Advanced Prosthodontics, Graduate School of Clinical Dentistry, Korea University) ;
  • Shin Sang-Wan (Department of Advanced Prosthodontics, Graduate School of Clinical Dentistry, Korea University)
  • 신화섭 (고려대학교 임상치의학대학원 고급치과보철학과) ;
  • 김영수 (고려대학교 임상치의학대학원) ;
  • 신상완 (고려대학교 임상치의학대학원 고급치과보철학과)
  • Published : 2006.08.01


Purpose: This study aims to get the fundamental data which is necessary to the development direction of implant surface treatment hereafter, based on the understanding the surface structure and properties of titanium which is suitable for the absorption of initial tissue fluid by researching effects of additional surface treatments fir sandblasted with large git and acid-etched(SLA) titanium on surface micro-roughness, static wettability, fibronectin adsorption Materials and Method: In the Control groups, the commercial pure titanium disks which is 10mm in diameter and 2mm in thickness were treated with HCI after sandblasting with 50$\mu$m $Al_2O_3$. The experiment groups were made an experiment each by being treated with 1) 22.5% nitric acid according to SLA+ASTM F86 protocol, 2) SLA+30% peroxide, 3) SLA+NaOH, 4) SLA+ Oxalic acid, and 5) SLA+600$^{\circ}C$ heating. In each group, the value of Ra and RMS which are the gauges of surface roughness was measured, surface wettability was measured by analyzing with Sessile drop method, and fibronectin adsorption was measured with immunological assay. The significance of each group was verified by (SPSS, ver.10.0 SPSS Inc.) Kruskal-Wallis Test. (α=0.05) And the correlation significance between Surface micro-roughness and surface wettability. surface roughness and fibronectin adsorption, and surface wettability and fibronectin adsorption was tested by Spearman's correlation analysis. Result: All measure groups showed the significant differences in surface micro-roughness, surface wettability, and fibronectin adsorption. (p<0.05) There was no significance in correlation among the surface micro-roughness, surface wettability, and fibronectin adsorption. (p>0.05) Conclusion: Surface micro-roughness and surface wettability rarely affected the absorption of initial tissue fluid on the surface of titanium.



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