Day 7- Final Impressions for Complete dentures

Today was a great day because Dr. Schmidt had scheduled several patients for me. I saw six patients and completed 13 restored surfaces. I also had a patient who presented with mesial decay on #31M but the existing amalgam was very large and the faculty showed me how to repair the mesial amalgam without taking out the existing restoration. He used a slow handpiece round bur in addition to the spoon to excavate the caries and then packed amalgam in the preparation and used a large condenser, an explorer and hollenbeck to make it flush with the margin. Then a radiograph was taken to make sure there were no overhangs, remaining caries or excess amalgam.

I also started doing removable, taking initial impressions, and practicing final impressions after observing the faculty. I learned that overextension is usually the biggest problem with dentures and before border modling I should always check the extension of custom tray to make sure it is fully seated and not over extended past the attached gingiva. Then I used compound wax to bordermold and polysulfide impression material for the final impression.

This photograph shows custom trays that have been border molded with green stick compound. The compound is softened with heat and applied to the border of the tray.

Then used Permlastic- Rubber Base, Regular Polysulfide Impression material for the final impression.