Teeth whitening is a billion-dollar ritual, but it’s rarely a “healthy” one. Most often, it’s like trading yellow stains for ...

“Early humans used chewing sticks, twigs, bird feathers, animal bones, and plant fibers to remove debris from their teeth,” ...

Researchers have created a bioinspired gel that can regenerate tooth enamel by mimicking natural growth processes. The fluoride-free material forms a mineral-rich layer that restores enamel’s strength ...