Any indirect restoration requires an accurate impression of the prepared margins and the tooth. To obtain an accurate impression, the gingiva has to be displaced or retracted temporarily to allow for the impression material to flow into the gingival sulcus and capture the margins of the preparation. Traditionally this is accomplished by packing two knitted cords. The cordless technique does not require this step but uses a pneumatic hand piece through which the light body impression material is injected in the sulcus displacing the gingival tissue in order to capture the margins of the prepared tooth. Both techniques are described in detail below.