For all of you who ate way too much candy this past Halloween, we have wonderful news for you. Scientists in Britain have developed a new procedure that can repair slightly decayed teeth before a deep cavity forms without the need for painful injections and drilling. The painless procedure involves cleaning a tooth of any signs of mild decay before flushing it out with minerals and stimulating it with an electric pulse to push the minerals to the deepest part of the cavity, effectively mending and strengthening tooth enamel. So rest easy, your teeth may never have to endure the dreadful procedure of having a cavity filled again.