The new study published in Science Translational Medicine shows that a low-power laser can trigger stem cells in your tooth to form dentin

How can this be tested for repurposing to help neuronal stem cells? That is the kind of innovative thinking our stroke associations are not doing.
Article here:

A Simple Laser Blast Could Help Grow Your Teeth Back

Research here:

Photoactivation of Endogenous Latent Transforming Growth Factor–β1 Directs Dental Stem Cell Differentiation for Regeneration