Whole-Tooth Regeneration
Grow a new natural tooth where one was lost
The goal is to grow a new, living, natural tooth where one has been lost — a real tooth of the body’s own tissue, rooted and alive, not an artificial substitute. The return of something humans lost in evolution: the ability to grow replacement teeth.
Most animals regrow teeth; adult humans get one set and no more. Lose a tooth to decay, injury, or age, and the body cannot replace it. Tooth loss affects billions of people and shapes how they eat, speak, and feel. But here is the extraordinary hypothesis emerging from research: some people — especially those born missing teeth — may carry the dormant buds of a third set of teeth that never develop. If that biological potential can be safely awakened, the body could grow its own replacement teeth — an idea now being tested for the first time. That is why whole-tooth regeneration is the flagship of the teeth — it is among the most concrete regenerative goals in all of medicine, and it has already reached human trials.
We are building the capability to prompt the body to grow new natural teeth: either by awakening those dormant tooth buds with a targeted medicine, or by growing a tooth from the patient’s own cells and guiding it to erupt and root in the jaw — a living tooth, integrated with nerve and bone.
Awaken the dormant tooth, or grow one from cells
Awakening dormant tooth buds Clinical — human trials
A medicine that blocks a protein called USAG-1 regrew teeth in animals, and researchers believe it may awaken suppressed tooth buds in people. The drug has entered human clinical trials — the world’s first.
Growing a tooth from stem cells Frontier
Tooth-germ stem cells can be guided to form tooth structures, a route to growing a replacement tooth from a patient’s own cells.
Rooting and erupting correctly Frontier
A regrown tooth must erupt in the right place, root into the jawbone, and connect to nerve and blood supply to be a true functional tooth.
Regrowing the living tooth interior Clinical
Regenerating dental pulp — the living nerve-and-vessel core — restores a tooth’s vitality and is advancing in the clinic.
Cited as evidence the capability is real — not as partners or endorsers.
Companies & clinical programs
Toregem BioPharma (developing the USAG-1 tooth-regrowing antibody) with Kyoto University and Kitano Hospital in Osaka, led by Dr. Katsu Takahashi; the program holds orphan-drug status in Japan.
Universities & institutes
Kyoto University and academic dental and craniofacial research centers · tooth-development and dental-stem-cell laboratories.
Government & programs
National Institute of Dental and Craniofacial Research (NIDCR, NIH) · regenerative-medicine programs.
The technologies: USAG-1 antibody therapy (TRG-035) that awakens dormant tooth development; dental stem cells and tooth-germ tissue engineering to grow teeth from cells; the developmental biology of how teeth form, which guides every approach; and pulp regeneration that restores a tooth’s living interior. Note: enamel itself is made by a biomineralization process and does not self-repair, which is why growing a whole new tooth — rather than patching enamel — is the regenerative goal.
World-first tooth-regrowing drug in humans Clinical
The USAG-1 antibody — the first drug designed to regrow human teeth — began human clinical trials, targeting people missing teeth, with a development goal around the end of the decade.
Dormant third dentition confirmed Demonstrated
Research established that humans carry suppressed buds for an additional set of teeth — the biological basis for awakening natural regrowth.
Teeth grown from cells in animals Demonstrated in animals
Tooth structures have been grown from tooth-germ stem cells and developed into teeth in animal studies — proof a tooth can be regrown from cells.
Orphan-drug status granted Clinical
The tooth-regrowing therapy received orphan-drug designation in Japan for congenital tooth absence, supporting its path through trials.
The honest challenges: the USAG-1 drug is in early human trials — promising, but efficacy and safety in people are still being established, and timelines (a target around 2030) are goals, not guarantees. Growing a tooth from cells must produce the right shape, size, and orientation, erupt correctly, and root into living jawbone with nerve and blood supply. Enamel cannot self-repair, so the whole tooth must form properly the first time. The capability is real and, uniquely, already in human trials — but it is not yet an available treatment, and we say so.
The future, fully built
A person who lost a tooth — to decay, injury, or age — grows a new natural one: a living tooth of their own tissue, rooted in the jaw, connected to nerve and blood supply, indistinguishable from the one they lost. The dormant ability humans evolved away from is reawakened. A lost tooth becomes something the body can grow back.
The proof, for this capability
Cited as evidence the capability is real, not as partners or endorsers.
USAG-1 tooth-regrowing drug (human trials)
The first drug designed to regrow human teeth, developed by Toregem BioPharma with Kyoto University and Kitano Hospital (Dr. Katsu Takahashi), entered human clinical trials. Stage: Clinical (trials).
Dormant third dentition
Humans carry suppressed buds for an additional set of teeth, the biological basis for awakening regrowth. Stage: Demonstrated.
Teeth grown from cells
Tooth structures grown from tooth-germ stem cells developed into teeth in animal studies. Stage: Demonstrated (animal).
Honest framing
Real organizations and studies are cited as evidence the capability is real — not as partners or endorsers. The drug is in early trials; it is not yet an available treatment.
Help build this future
Every signature grows the movement to make tooth regeneration real — and free at the point of need.