<http://schema.org/description>
"Periodontal disease, more commonly known as gum disease, is an infection that can potentially lead to tooth loss if left untreated. Do you know the ins and outs of identifying and fighting this condition? Find out by taking this quiz!"^^<http://www.w3.org/2001/XMLSchema#string>
<http://health.howstuffworks.com/wellness/oral-care/problems/periodontal-disease-quiz20.htm>