25/04/2026
Fyi
Tooth enamel doesn’t grow back once lost—but researchers are now working to rebuild it.
Daily exposure to acids, grinding, and dry mouth gradually erodes enamel, the body’s hardest tissue. Once lost, this protective layer cannot regenerate naturally, increasing the risk of sensitivity and decay.
Researchers have developed a protein-based gel that forms a microscopic coating over damaged areas. It acts as a template, guiding calcium and phosphate from saliva to reorganize into an enamel-like crystal structure.
In laboratory studies on human teeth, new mineral layers formed within days and showed hardness and resistance comparable to natural enamel. The regenerated layer is thinner and tested outside the body, so long-term durability remains uncertain.
This marks an early shift—from repairing damage to potentially rebuilding enamel itself.
📄Research Paper
DOI: 10.1038/s41467-025-64982-y