Question

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) Remove excess material from the impression tray.
B) Improve patient comfort during the impression process.
C) Aid in achieving a more accurate impression.
D) Create a visual effect for the patient's satisfaction.

Answer 1

The operator blows around the light-bodied impression material to ensure it captures detailed dental structures, which helps to create a more accurate impression prior to the addition of the heavy-bodied material.

Step-by-step explanation:

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 aid in achieving a more accurate impression. This is done because a thin layer of light-bodied material can flow into the fine details of the prepared tooth and surrounding tissues, capturing the minutiae of the dental structures. Then, the heavy-bodied material is added to provide bulk and support for the impression, allowing it to be removed from the mouth without distortion.