Caries has conventionally been treated with drlling and fillling keeping GV Black's rule of extension for prevention in mind. Contemporarily, caries is recommended to be treated with minimal intervention (MID) keeping prevention of extension in mind.In near future, caries will be treated without drill or any other method which involves loss of tooth structure as protien has been synthesized which replaces enamel. I will appreciate if someone elaborate on it in this forum.