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Researchers at the University of Nottingham have developed a protein-based gel that can regenerate lost tooth enamel — something the body can't do on its own. Applied like a fluoride treatment, the gel uses minerals from saliva to rebuild enamel's complex crystal structure. Lab tests show the regenerated enamel performs just like the real thing, and a commercial product could arrive as early as next year.
Scientists at the University of Nottingham have developed a breakthrough gel that could allow dentists to actually regrow lost tooth enamel — not just protect what's left. Enamel is the hardest substance in the human body, but once it's gone, it's gone for good. The new gel, published in Nature Communications, changes that by mimicking the biological process that forms enamel in early childhood.
The fluoride-free gel contains proteins that guide calcium and phosphate ions — naturally present in saliva — to grow new mineral crystals in precise alignment with existing enamel. This process, called epitaxial mineralization, recreates enamel's signature crystal architecture, which is what gives it its exceptional hardness and durability. It can also form an enamel-like layer over exposed dentin, potentially easing tooth sensitivity and improving the grip of fillings.
Key Takeaways:
Why it matters: Dental decay affects nearly half the world's population and is linked to broader health issues like diabetes and cardiovascular disease. A treatment that can genuinely rebuild enamel — rather than just slow its loss — could be a game-changer for preventive and restorative dentistry worldwide.
