Kiss Those Dentures Goodbye
Researchers at the Tokyo University of Science have successfully grown a tooth in the mouth of a mouse. The bioenginered tooth was created by taking "epithelial cells and mesenchymal cells (about 50,000 each) from a mouse embryo and cultivated them together in a collagen-based medium to create a tiny tooth bud". The tooth bud is implanted into the mouth and after fifty days grows into a fully functioning tooth. This research is expected to advance quickly and could one day lead to the development of "tooth regenerative therapy", which would give humans the ability to grow new teeth.
Image: "Panovision" by star5112 on Flickr via Creative Commons licensing.