Coltene Brinker Clamps #B4 Bicuspid, Anterior, EachDental Dam clamps to secure the dam and effectively retract the tissue. Dental Dam clamps are placed over a tooth to secure the dental dam in place and to retract the tissue from the surrounding area. Wingless clamps are without projections at the jaws and are positioned intraorally before the dam is stretched over the clamp and the tooth. The clamps are made from high quality steel and are available gloss finish and as color coded Fiesta clamps.