A study has been done to help identify the network of genes that allows sharks to develop and regenerate their teeth throughout their lifetime. The genes allow the sharks to replace rows of their teeth using what they call "a conveyer belt-like system". Scientists have known for awhile that some fish have the ability to do this but didn't exactly understand how it happened. But a research team from the University of Sheffield's Department of Animal and Plant Sciences, led by Dr. Gareth Fraser have pin-pointed out a special set of epithelial cells form called, dental lamina. The dental lamina is responsible for the regeneration of tooth development in the sharks throughout their lifetime.
Humans have a set of cells which causes the reproduction of replacement teeth, but only two sets are formed, baby teeth and your adult teeth. Dr. Fraser actually stated that although sharks are seen to be fearsome creatures, but one of the main reasons that they are successful predators is because of their sharp teeth that regenerate quickly and are replaced before they are able to decay.
I think this is actually a really great finding which if it became fully developed could really help a lot of people. I know that some teeth decay and fall out but if this were to continue, people could regularly replace those fallen out teeth if that were to happen. It would definitely have to be tested and thought out properly before it goes through. I can see how this research can be bad in some ways for dentists. I know that I am hoping to go to dental school after college and you have to learn about how to implant new teeth if one were to fall out, so that would take money away from the dentistry world.