A gingival retraction cord is placed _____ the crown preparation is completed; it is removed _____ the final impression is taken.

Question

Quizplus · Accepted Answer

A gingival retraction cord is placed after the crown preparation is completed and removed before the final impression is taken.
The dentist needs access to the margin of the tooth crown during the preparation,so the cord cannot be placed until after the preparation is completed.In order to get an accurate impression of the margin,the cord must be removed before seating the impression tray.

A Gingival Retraction Cord Is Placed _____ the Crown Preparation