GINGIVAL RETRACTION: ESSENTIAL FOR MAKING A GOOD IMPRESSION-A REVIEW - PART 2

Safia Almas*, Heba Ansar, Shraddha Rathi, Geeta Rajput and Shaista Afroz

ABSTRACT

The single cord approach should be applied when making an impression for a modest number of abutments with healthy tissues and no haemorrhage. The prepared margins are supragingival or juxta, or the depth of the sulcus is inadequate to attach a second cord apically at the finish line, making it the easiest procedure to use in these situations. One cord that has been presoaked in hemostatic medicine is put into the sulcus. The cord may be removed right before taking the final impression or it may be left in the sulcus to limit bleeding and tissue fluids if the finish line is completely visible, the cord is positioned below the finish line, and unprepared tooth structure is present occlusal to the cord. Excellent outcomes are possible when the soft tissue is displaced laterally and the finish line is clearly apparent. The final impression may be inaccurate and the impression material may even tear in those locations if the tissues collapse over the packed cord, obstructing the view of the prepared finish lines. Some clinicians[45,46,47] advise using a soft tissue laser or electrosurgery (ES) in these situations to remove the tissue that has collapsed and is obstructing access.

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