Dr. Clark asks you to take maxillary and mandibular preliminary impressions on

the next patient for the fabrication of bleaching trays.

1. What impression material will you select to take preliminary impressions?

2. What type of trays will you select for the procedure?

3. How do you know which size tray to use? How are the trays prepared for the

impression material?

4. Describe the setup that is required for taking these impressions.