Which type of clamps have an extra projection?

The presence of an extra projection characterizes winged clamps, making them distinct from other types of clamps used in dental procedures. Winged clamps feature extensions, or "wings," that assist in stabilizing the clamp on the tooth and enhancing retention during dental work, particularly when placing a rubber dam. These wings provide a grip that can help secure the dam and keep the clamp in position, which is beneficial in maintaining a dry working area and facilitating access to the tooth being treated.

Understanding the characteristics and applications of winged clamps gives dental professionals insight into their optimal use in various clinical situations, especially when isolating deeper posterior teeth where access may be more challenging. This makes winged clamps a valuable tool for Expanded Function Dental Assistants (EFDAs) when managing endodontic and restorative procedures.