トップへ » Considering Dentures? » Konus Krone » 3. How Konus Krone is handled in Japan
3. How Konus Krone is handled in Japan
When I returned to Japan in 1980 this technique was beginning to spread among clinicians under the name Conus Crown. But the actual clinical procedures and manufacturing method was very different from what I had seen in Germany.
The metal being used in Japan was a gold and silver alloy called palladium. It kind of looked like the gold used in Germany, but it was not the same. At any rate it was quite different from the procedure that I learned in Germany.
The purity of the gold and silver palladium alloy degrades after long use. After seeing this I decided that I needed to spread the correct 'Konus Krone' technique so I published 'Konus Krone' and 'Riegel telescope' in the Shofu Color Atlas.
One big difference is that Japanese instructors were teaching that dentists should just remove the nerves from the teeth because of the large amount of filing necessary. Removal of nerves from the teeth became a big problem as the teeth would crack and the reputation of Konus Krone suffered greatly. In Germany, one of the rules of Konus Krone is that only teeth with nerves can be used as support foundations, but in Japan this was the complete opposite.
Moreover, it is necessary to understand the fundamentals of denture design in order to protect teeth, but in Japan these fundamentals were widely unknown. This was especially true for the 'torsion bar' and 'sparte', bed designs that prevent the breaking of teeth. These techniques were completely unknown in Japan and in fact no measures were put into place to prevent teeth from breaking.
With these fatal flaws, the number of dentists who treated with Konus Krone grew fewer and fewer.
トップへ » Considering Dentures? » Konus Krone » 3. How Konus Krone is handled in Japan
