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KMID : 0988720080240040361
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Journal of the Korean Academy of Stomatognathic Function and occlusion
2008 Volume.24 No. 4 p.361 ~ p.369
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Characteristics of Fluoride Releasing of Anodized Titanium Implant
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Kim Ha-Young
Song Kwang-Yeob
Bae Tae-Sung
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Abstract
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The purpose of this study is to make porous oxide film on the surfaces of pure Ti through anodic spark discharge in electrolytic solution containing calcium and phosphate ions, to improve osseointergration by treating fluoride agent. In addition, it is to evaluate the fluoride modified effect on the surface. Commercial pure Ti plate with 20×10×2mm and Ti wire with a diameter of 1.5mm and a total length of 15mm were used. After making titanium oxide films converted by anodic spark discharge, anodizing was performed. Fluoride was spreaded to titanium laboratory plate and maintained for 30 minutes after anodizing breakdown. Fluoride ion discharge amount was measured per 24 hours after dipping titanium plate into saline (10ml) and sustaining 90rpm in a pyrostat. Some plates and wires were dipped in Hanks solutions for a month to examine biocompatibility using SEM and XRD. TiO2 film formed by anodic discharge technique showed great roughness and uniform pores which were 1~3 ㎛ in a diameter. Roughness of the films treated with anodic discharge after blasting were higher than the turned ones(P<0.05). Rapid surface activity was observed in the samples treated with TiF3 agent, which immersed in Hanks solution for 30 days. Taking the results into consideration, the fluoride modified implant with anodic discharge demonstrates that it makes uniformly porous oxide film on the surface of implant and properly increase roughness for osseointegration. The implants will achieve greater bone integration after short healing time by improving surface activity.
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KEYWORD
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porous oxide films, fluoride treatment, anodic discharge
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