The experimental titanium was homogenous and was considered to be highly useful in observing the responses of the surrounding tissue to the titanium surface.
Commercially pure titanium thin films were uniformly formed on inner surfaces of tissue culture dishes by DC sputtering method. Then, the thickness of the film was about 30nm and the films were thin titanium oxide layer on commercially pure titanium. MC3T3-E1 cells were normally cultured on the dishes. Then, The films on the dishes were not broken and did not decompose. After 24 hours, observations of the sample from the direction of the cells' bottom surfaces adhered the titanium oxide on the commercially pure titanium film by an inverted optical microscope succeeded. Therefore, the new technique is useful for observations the interactions between titanium oxide and cells.
Titanium oxide/ titanium/ plastic composite implants were formed by coating
commercially pure titanium thin films on the surfaces of plastic cylinders by DC magnetron sputtering
method. The composite is uniformly formed and the surface of the composite implant is smooth. The
implants in rat tibias were not broken and the films on the surfaces of the samples did not decompose.
The samples with bone were able to cut by diamond knife and observations between bone and
titanium oxide on titanium by TEM succeeded. Therefore, the composite is useful for implants or
observations the interactions between titanium oxide and bone in detail.
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