Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Fabrication of Ferroelectric BaTiO3Thin Film on Ti Substrate and Formation of Calcium Phosphate in Eagle’s MEM Solution

티타늄 기판 위에 강유전성 BaTiO3박막 형성과 분극처리에 의한 Eagle’s MEM 용액에서의 Calcium Phosphate 생성

  • Lee, Yong-Ryeol (Dept. of Dental Materials and Dental Materials Research Institute, College of Dentistry, Chonnam National University) ;
  • Jeong, Young-Hwa (Dept. of Dental Materials and Dental Materials Research Institute, College of Dentistry, Chonnam National University) ;
  • Hwang, Kyu-Seog (School of Automotive Mechanical Engineering, Nambu University) ;
  • Song, Ho-Jun (Korea Basic Science Institute) ;
  • Park, Yeong-Joon (Dept. of Dental Materials and Dental Materials Research Institute, College of Dentistry, Chonnam National University)
  • 이용렬 (전남대학교 치과대학 치과재료학교실 및 치과재료연구소) ;
  • 정영화 (전남대학교 치과대학 치과재료학교실 및 치과재료연구소) ;
  • 황규석 (남부대학교 자동차기계공학부) ;
  • 송호준 (한국기초과학연구원) ;
  • 박영준 (전남대학교 치과대학 치과재료학교실 및 치과재료연구소)
  • Published : 2002.07.01
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Abstract

Titanium (Ti) is a bioinert material and has lower elastic coefficient and better strength/volume property than other metals. Ferroelectric materials show alignment of positive and negative charges by poling treatment. This study was purposed to develop a new implant system by combining the advantages of Ti and ferroelectric property of $BaTiO_3$ (BTO). It was performed with the assumption that the $Ca^{2+ }$ ions would be easily attracted on negatively charged surface and the attracted cation might behave as nuclei for bone-like crystal growth in biological solutions. A ferroelectric BTO thin film on Ti was fabricated and the effect of poling treatment on the improvement of calcium phosphate (Ca-P) formation in biological solutions was evaluated. After immersion in Eagle’s minimum essential media (MEM) solution, NaCl was formed on Ti, and Ca-P layer containing NaCl was formed on Ti-O. Weak and sparse Ca-P layers were formed on BTO, while thick, homogeneous, and dense Ca-P layer was formed on negatively polarized BTO (N-BTO), which was confirmed by FE-SEM and EDX. In summary, these results demonstrate that poling the ferroelectric BTO surface negatively is effective for the formation of Ca-P layer in MEM solution, and that N-BTO coating on Ti could be used as a possible alternative method for enhancing the osseointegration of the implants.

Keywords

References

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