When assisting with the final impression in a crown and bridge preparation,the operator may "blow" around the light-bodied impression material before inserting the heavy-bodied material.The purpose of this procedure is to:
A)dry the area off.
B)make it easier for the operator to see the margins of the preparation.
C)make it easier to set the impression tray.
D)thin out the material to allow it to flow better within the sulcus and around the margins.

Question

Quizplus · Accepted Answer

Blowing around the light-bodied impression material can thin it out and make it easier for the heavy-bodied material to flow into the sulcus and around the margins of the preparation. This can result in a more accurate final impression.

When Assisting with the Final Impression in a Crown and Bridge