We use patient's existing denture as a reference, so we do not have
to make preliminary impressions, custom trays, and wax rims. It
saves us and patient a lot of time.
It has borders which the patient is accustomed to
The occlusion can help
orient the tray back into the mouth correctly
The old denture
usually fits loosely, creating an even thickness of impression
material.
Why do we only apply PVS adhesive around the border?
It is not necessary to apply adhesive around the entire tissue
surface of the denture as this will increase clean up time.
Which step did Doctor Wei skip during the first procedure
?
He should have applied PVS adhesive on the border of the
existing denture before applying PVS impression material.