Low - power light has been used to enable stem cells to regenerate body tissue . The Indian - led project could signal a range of clinical applications in areas such as restorative dentistry , wound healing and bone formation . Researchers used a low - power laser to stimulate human dental stem cells to form dentin , the hard tissue found in teeth . The ROS activated the latent TGF-β1complex which, in turn, differentiated the stem cells into dentin. Current clinical techniques require stem cells to be manipulated in a lab and then returned to the body , but this new technique does n't introduce anything new to the body , so the regulatory and technical hurdles are far lower . Lead author Praveen Arany said that following successful trials on rodents , the next step would be human clinical trials .
Low - power light has been used to enable stem cells to regenerate body tissue . The Indian - led project could signal a range of clinical applications in areas such as restorative dentistry , wound healing and bone formation . Researchers used a low - power laser to stimulate human dental stem cells to form dentin , the hard tissue found in teeth . Current clinical techniques require stem cells to be manipulated in a lab and then returned to the body , but this new technique does n't introduce anything new to the body , so the regulatory and technical hurdles are far lower . Lead author Praveen Arany said that following successful trials on rodents , the next step would be human clinical trials .