Dental rubber dams are used to isolate a tooth or several teeth during dental treatments. Often available in both latex and latex-free compositions, these stretchy sheets of rubber are placed in the mouth with just the required teeth poking through. Rubber dams allow treatment while protecting the patient's other teeth, gums, cheeks and tongue. The dams can be held in place with frame, and some come with an integrated frame. Be sure to keep a supply of rubber dams on hand, and any additional supplies you'll need such as rubber dam clamps and rubber dam punches.