| 학회 | 한국재료학회 |
| 학술대회 | 2016년 가을 (11/16 ~ 11/18, 경주 현대호텔) |
| 권호 | 22권 2호 |
| 발표분야 | B. 나노화학/바이오 재료 분과 |
| 제목 | Titanium for Biomaterial and Its Surface Technology |
| 초록 | Titanium has been widely used as a biocompatible material for bone-anchored metal implants in dental and orthopedic reconstruction. Although titanium and its alloys have an excellent corrosion resistance and biocompatibility, considerable controversy has developed over the metal ion release and wear debris in-vivo and in-vitro. It has always covered with a natural oxide film on its surface of titanium. In order to enhance the biocompatibility on the titanium surface, stable oxide films and/or bioactive materials on its surface would be desired for faster osseointegration and less healing time. It has been reported that the stable oxides of Ti and its alloys provide surfaces for favorable biological integration. It is also known that the stability of the oxide depends strongly on the composition, structure, and thickness of the film. Anodic oxidation process, which are called as micro-arc oxidation or plasma electrolytic oxidation, is reported to be a preferred method to form porous and thick oxide films. Electrochemically formed oxide films on titanium can either be amorphous and/or crystalline depending on the forming condition such as anodic potential, concentration and temperature of the electrolyte and temperature and so on. It is generally agreed that the oxide film mainly consists of TiO2, which has three stable forms, that is, rutile, anatase and brookite. Increasing the thickness usually increases crystallinity, where anatase structure is preferable to bone affinity. Further improvement of bone induction to the Ti materials, ion implantation method, especially PSII(plasma source ion implantation) which can dose desired elements with uniform implantation without any dimension, has been recently tried to adopt. This is based on bulk plasma and high voltage pulse technology, which is much superior to other surface modification techniques such as coatings and conventional beam-line ion implantation, giving independent controllable parameters of bioactive elements, implanted depth, structure and energies of the modified surface. |
| 저자 | Yongsoo Jeong |
| 소속 | Surface Engineering Department |
| 키워드 | Titanium; Surface modification; Biocompatible material; PSII |
