Crest White Smile Coupons & Promo Codes
Crest White Smile 50% Off Coupon Codes and Promo Codes. In the early 1940s Procter & Gamble began a research program to find ingredients that, when added to a toothpaste, would reduce tooth decay. At that time, Americans developed an estimated 700 million cavities a year, making dental disease one of the most prevalent U.S. health problems. In 1950, Procter & Gamble formed a joint research project team headed by Dr. Joseph Muhler at Indiana University to develop and test a new toothpaste with fluoride. Eventual exciting results from a clinical study of this toothpaste indicated that children ages six to 16 showed an average 49% reduction in cavities, and adults showed tooth decay reduction to almost the same degree. Following the success of this study, Crest with Fluoristan toothpaste launched into a number of test markets in 1955, followed by national expansion in January, 1956.