Which clamp type is characterized by its winged structure?

The clamp type characterized by its winged structure is referred to as the winged clamp. This design features prominent wings that extend from the body of the clamp, allowing for easier manipulation and adjustment during use. The winged structure provides a firm grip and enhances the user's control over the clamp, making it effective for various applications, particularly in situations where precise stabilization is needed.

In contrast, while the other clamp types, such as universal, posterior, and anterior, serve specific functions in moisture control and may have distinct features, they do not have the pronounced winged design that is unique to the winged clamp. The absence of wings in those options indicates that they do not fit the description provided by the question.