Matériel de rétractation

Gingival retraction cords in plain, epinephrine and aluminum chloride impregnated versions, plus astringent retraction paste. They open the sulcus and control bleeding so margins show clearly in the impression or scan.

Knitted cord packs easily and holds its shape. A double cord technique leaves a thin cord in place while the upper cord is removed just before the impression. Paste is quicker and gentler on thin tissue.

Avoid epinephrine cords in patients with heart conditions, and moisten the cord before removal so the clot is not disturbed.