12/13/2025
Scientists in Japan are exploring a potential future in which the human body may be encouraged to regrow lost teeth. A research team led by Dr. Katsu Takahashi at the Medical Research Institute Kitano Hospital has been studying a drug designed to influence the biological pathways involved in tooth development.
Their work focuses on USAG-1, a protein known to inhibit tooth formation. In animal studies, temporarily blocking this protein allowed dormant tooth buds to develop into fully formed teeth. Researchers believe that humans, like some animals, retain inactive “third-set” tooth buds, and that understanding how to activate them could open the door to new tooth-regeneration therapies.
While the findings are still in preclinical stages, the team plans to begin human clinical trials to evaluate safety and effectiveness. If successful, this research could one day provide an alternative approach for people who lose teeth due to decay, gum disease, or aging. Scientists note that the concept aligns with ongoing progress in bone and dental-tissue regeneration, offering a glimpse into what next-generation dental care might look like.
Clinical translation will take time, but the early laboratory work highlights a promising direction for regenerative dentistry.
📖 Reference:
Ravi, V., Murashima-Suginami, A., Kiso, H., Tokita, Y., Huang, C. L., Bessho, K., Takagi, J., Sugai, M., Tabata, Y., & Takahashi, K. (2023). Advances in tooth agenesis and tooth regeneration. Regenerative Therapy, 22, 160–168.
