A Chinese research team may have finally cracked the problem of repairing tooth enamel. Scientists at Zhejiang University have discovered a method by which its complex structure can be reproduced and the enamel essentially “grown” back. The team behind the research say the materials are cheap and can be prepared on a large scale. “After intensive discussion with dentists, we believe that this new method can be widely used in future,” said Dr Zhaoming Liu, co-author of the research. Currently, substitute materials such as resin, metal alloys, amalgams and ceramics…