What happened to tooth bud implant research that was going on in the USSR in the 1980's?

In the 1980s, the USSR conducted research on tooth bud implants, exploring techniques for growing new teeth from dental stem cells. However, this research faced challenges due to limited resources, lack of international collaboration, and the eventual dissolution of the Soviet Union in 1991, which disrupted scientific continuity. As a result, many promising studies were abandoned or went unpublished, and the advancements in this field were largely overshadowed by developments in other countries. Subsequent research in tooth regeneration has since gained traction globally, but the early Soviet contributions remain relatively unrecognized.