When should gingival retraction cord be placed and removed?

The placement and removal of gingival retraction cord is a critical step in dental procedures, particularly before taking final impressions. The correct option indicates that the cord should be placed after the dental preparation is complete and shortly before the final impression is taken.

This timing is essential because the retraction cord helps to temporarily displace the gum tissue away from the tooth, creating a clearer view and access to the margins of the preparation. This is crucial for ensuring that the impression captures all necessary details without interference from the gingival tissue.

Removing the cord after the final impression is taken is also essential because it allows the gum tissue to return to its natural position, minimizing any potential trauma or irritation caused by the cord. In doing so, it helps to maintain the health of the gum tissue and supports proper healing post-procedure.

Therefore, the timing of placement right before the final impression and removal afterwards is crucial for achieving optimal results in dental restorations, making this option the most appropriate choice.