Use the anatomically-shaped Fast Dams 100-Pack from Indigreen Innovations in place of cotton rolls to retract cheek and tongue while maintaining a dry field. 17 suction holes along the perimeter aspirate continuously. Smooth rigid plastic construction will not collapse. Great for use when applying sealants or when a rubber dam is too cumbersome. Molded anatomical shape stabilizes position — frees hands by eliminating the need to hold evacuation instrument. Fits into all standard saliva ejector valves. Will not aspirate soft tissue. Includes 50 left and 50 right units per pack.