LONDON (BBC)Dentists may one day be able to replace missing teeth with ones newly grown from gum cells, say UK researchers. The team from King’s College London took cells from adult human gum tissue and combined them with another type of cell from mice to grow a tooth. They say using a readily available source of cells pushes the technology a step nearer to being available to patients. But it is still likely to be many years before dentists can use the method.