Scientists have come up with a bright idea – literally – to repair teeth.

And they say their concept – using laser light to entice the body’s own stem cells into action – may offer enormous promise beyond just dentistry in the field of regenerative medicine.

The researchers used a low-power laser to coax dental stem cells to form dentin, the hard tissue similar to bone that makes up most of a tooth, demonstrating the process in studies involving rats and mice and using human cells in a laboratory.

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