Abstract
In this further study of implant corrosion, the effects of various pretreatments and surface preparations on corrosion rate were determined. The results show that electropolished surfaces corrode most slowly, while sand-blasted finishes are the least resistant. Also, it is concluded that in the usual surgical implant applications, surface scratching is of minor importance. Possible methods for passivating prior to implantation in the body include exposure to either HNO 3 or oxygenated saline solution. In general, oxygenated isotonic sodium chloride is very effective in reducing the subsequent corrosion rate and is strongly recommended for stainless steel and Vitallium implants.
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