Estimated read time: Less than a minute
This archived news story is available only for your personal, non-commercial use. Information in the story may be outdated or superseded by additional information. Reading or replaying the story in its archived form does not constitute a republication of the story.
Scientists in Japan have created a hard-wearing, artificial enamel that covers your teeth and is only 0.004 millimeters thick. Read More ...
×
