What is the primary function of a wedge in dental procedures?

The primary function of a wedge in dental procedures is to hold the matrix band firmly against the gingival margins. This is essential in restorative dentistry, particularly during the placement of dental fillings, as it ensures that the matrix band creates a proper seal against the tooth. By securing the band in place, the wedge helps to create an appropriate space for the amalgam or composite material to be placed, preventing any leakage or overhang at the margins of the restoration. This allows for better adaptation of the material to the tooth structure and contributes to the overall success of the dental restoration.

While others may mention functions related to isolation, support, or stabilization, these do not encompass the primary role of the wedge in the context of placing and securing the matrix band effectively during restorative procedures.