What is a Dental Dam? Originally developed for the dental industry, latex dams can be used to prevent the exchange of bodily fluids during oral sex. Lixx dams are made of ultra thin latex come in 5 scented flavors including strawberry, banana, grape, vanilla & mint. Lixx are becoming a widely used barrier for vaginal and anal oral sex and can help reduce the spread of disease. Each Lixx dam is cut to 7" X 6" in size and they are available singly or in an assorted 5 pack.