CAD/CAMによる歯科修復物の製作 : その1チタンコーピングの適合性とセラミックス-ステイン陶材の接合面観察

概要

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In this study, a sample of titanium crown made by using DECSY, a dental CAD/CAM system, and one made by casting were compared to examine the adaptation, and the bonding interface of a special ceramic block and stain porcelain after baking was observed. The space between the die and titanium crown, which was used as the design value, was set at 35, 55, and 75μm respectively during manufacture of the titanium crown by CAD/CAM. The adaptation was compared in the marginal region. On the other hand, the cutting surface of the ceramic block was coated with the stain porcelain and cut perpendicularly to the bonding interface after baking in order to observe the bonding interface of the ceramics with SEM. The comparison of the adaptation of samples made by CAD/CAM and casting showed that the adaptation of the marginal region of the titanium crown made by casting was satisfactory. There was no significant difference in the adaptation of the marginal regions of the titanium crowns made by casting and CAD/CAM when the thickness of the spacer was set at 75μm. The state of the bonding interface between the ceramic block and stain porcelain was satisfactory.
奥羽大学の論文