Isodam HD Polyisoprene Dental Dam is used to isolate specific areas of the mouth during dental procedures and increase patient comfort. The high-definition royal blue color enhances contrast to teeth and improves dental imaging. Non-latex polyisoprene. Medium or Heavy gauges. Tear resistant with superior elasticity. Keeps operatory field dry. Isodam HD Polyisoprene Dental Dam is used to isolate specific areas of the mouth during dental procedures and increase patient comfort. The high-definition royal blue color enhances contrast to teeth and improves dental imaging.