A new survey on oral health finds that many Americans don`t take advantage of care that`s available from dentists. The survey by the National Institute of Dental Research finds that while the use of dental sealants has more than doubled in the last 10 years, less than 2 percent of all children have sealants on their primary teeth. Only 19 percent of children and adolescents have sealants on their permanent teeth. The survey found at least 94 percent of people over age 18 had either untreated decay or fillings in the crowns of their teeth. The dental institute is part of the National Institutes of Health.