The Wall Street Journal (2/8, Johannes, Subscription Publication) reviews a new toothpaste that binds to plaque and shows it as green, aiming to improve oral hygiene by showing people areas they missed while brushing. The article states that researchers at the University of Illinois at Chicago conducted a short-term study of Plaque HD, finding plaque was reduced by 51.3% after people brushed with the toothpaste for up to 10 days. American Dental Association spokeswoman Dr. Mary Hayes says it could serve as a consistent reminder to patients and help them learn to be more effective in their oral hygiene. Dr. Hayes adds that areas between the teeth and at the gumline are the most common areas patients miss.