Oral health – the health of your mouth — is an important part of good overall health and well-being. Nationally, about 1 of 4 adults have untreated tooth decay and nearly half of adults have gum disease. Oral health problems are common among New Yorkers. More than 1 of 3 third grade children in NYC have untreated tooth decay. By taking simple measures, most oral health problems can be prevented. Preventing oral health problems can reduce health care expenses.