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The production of titanium parts from powder metallurgy is one of the tendencies of modern metallurgy, since it allows obtaining structures with complex geometries and controlled porosity. The purpose of this study was to produce two types of dental implant prototype, and compare them biologically. Smooth surface prototypes were obtained, by the conventional turning process and porous surface prototypes using Metal Injection Molding (MIM). The prototypes were implanted in rats that were euthanized after 3 weeks, and the bone/implant interface was analyzed. The results showed that all prototypes were clinically stable at the end of the healing period, but those produced by the MIM process presented a significantly higher percentage of osseointegration (bone/implant contact) than the milled prototypes in the same healing period. It is concluded that the bone tissue grew independent of type of implant, enabling quick, rigid fixation already in the third week of the healing process.

To develop the extraction media for Cd and Ni from aqueous solutions, magnetic beads containing IDA group with strong attraction to heavy metals were produced using the activating agents Epichlorhydrin (Ep) and 1,4-Butanedioldiglycidylether (Bu), respectively. Then the beads were agitated at a pH of 6 after being added to Cd and Ni aqueous solutions of various concentrations. It was confirmed that the heavy metals combined with the magnetic beads within a short time through the process. After the process, the magnetic beads were collected with a magnet, and then dissolved in acid for the analysis of heavy metal concentration. The analysis of heavy metals in the acid solution could be analyzed with an AAS (atomic absorption spectrometer). The results showed that the heavy metal extraction efficiency of Bu was relatively higher than that of the Ep. It supported the hypothesis that the relatively longer length of Bu’s spacer made more free positioning possible when the IDA group combined with the heavy metal.