What type of clamps help retract the gingiva on the facial surface for improved visibility?

The type of clamps that help retract the gingiva on the facial surface for improved visibility is the anterior clamp. Anterior clamps are specifically designed to fit the first premolars and anterior teeth, providing optimal retraction of the gingiva in these areas. This feature is crucial when working on restorative procedures involving the front teeth, as it allows the dentist to maintain a clear view of the treatment area without interference from surrounding soft tissues.

While winged clamps have additional features for easier placement and removal, they do not specifically target gingival retraction as effectively as anterior clamps do. Posterior clamps are typically used for molar teeth, focusing more on those areas rather than the facial surfaces of anterior teeth. Universal clamps can fit different tooth types but are not optimized for the facial gingival retraction necessary in anterior applications.