Reading Time: 7 minutesA Surprising Discovery in Colorado: The Mystery of Brown Stains In the early 1900s, a young dentist named Frederick McKay opened his practice in Colorado Springs. As he started treating local patients, he noticed something strange. Many of the patients had dark brown stains on their teeth. These stains were so severe that they almost … Continue reading The History of Fluoride: A Vital Mineral for Healthy Teeth