Which type of cord is recommended to be packed first when working with two cords?

The practice of packing the smaller cord first when working with two cords relies on the principle of accommodating the anatomy of the gingival sulcus. The smaller cord is designed to create a space that can effectively control the flow of impression material while providing adequate tissue retraction. By placing this cord first, dental professionals can ensure that there is more room for the thicker or standard cord to follow, optimizing the retraction of the gingival tissue and allowing for a cleaner margin when capturing impressions.

Doing this aids in the precision of the procedure, as it sets the stage for the subsequent placement of the thicker cord, which is more effective for final retraction. This sequential packing technique harmonizes the interaction between the cords and the surrounding tissue, enhancing predictability in dental impressions. Consequently, the preferred sequence reflects sound clinical judgment aimed at improving patient outcomes.