For the past several centuries, the evolution of dentistry has largely focused on the removal of diseased dental tissues, at ever-increasing bur rotation speeds, in the preparation of a cavity whose shape was dictated by the limitations of the current restorative material. Unfortunately, this indiscriminate removal of both decayed & healthy tooth structures was a corollary development. Hence, Recognition, control and elimination of the disease are the prime essentials in modern conservative, Minimal intervention dentistry. In the absence of disease, the concept of 'extension for prevention'...