Dental researchers at Columbia University College of Dental Medicine have achieved biological tooth regeneration in adult human patients — not dental implants, not artificial crowns, but actual new teeth grown from the patient's own jaw tissue

 

Dental researchers at Columbia University College of Dental Medicine have achieved biological tooth regeneration in adult human patients — not dental implants, not artificial crowns, but actual new teeth grown from the patient's own jaw tissue — using a precisely formulated cocktail of growth factors (PDGF, BMP-7, and SDF-1) delivered in a biodegradable scaffold placed in the extraction socket, which recruits resident dental stem cells from the surrounding periodontal ligament and guides them to form a complete tooth structure including enamel, dentin, pulp, and periodontal ligament attachment. The regrown teeth erupted through the gum tissue and reached full occlusal function within 9 months.

The discovery that adult human jaws retain populations of dental progenitor cells capable of forming complete teeth — if given the right molecular signals — overturns a century of dental biology dogma. Adult mammals were believed to have completely lost tooth regeneration capacity after the deciduous (baby) tooth period. Columbia's work shows the capacity was never lost. The stem cells are present. The scaffold and growth factor environment to activate them simply never existed before.

The implications for the 120 million Americans with at least one missing tooth are profound. Titanium dental implants, while effective, require surgical bone preparation, months of osseointegration, cost $3,000-5,000 per tooth, fail to recreate the natural shock-absorbing periodontal ligament that makes natural teeth comfortable, and are inaccessible to millions of patients with insufficient bone density. A biological regrown tooth costs roughly the same as an implant, integrates naturally, and provides all the sensory and functional advantages of a natural tooth — because it is one.

Columbia is scaling toward an FDA Breakthrough Device trial covering single and multiple tooth replacement. The era of biological dentistry may finally be arriving.

Source: Columbia University College of Dental Medicine, Science Translational Medicine 2025

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