In the last century, fl uoride, like penicillin, was heralded as a major public health advance in mankind's battle against disease and its eff ects. Today, fl uoride, like antibiotics, is under attack, a victim of its success, popularity, and ubiquity. When it comes to fl uoride in dental practice, today's clinician often has diffi culty separating fact from fi ction, solid from junk science, p...