An immediate denture is constructed before teeth are removed from the patient's mouth so that the patient doesn’t have to move around with out teeth till the final denture is ready. Constructing immediate dentures involves taking impressions (making copies) of your mouth before the teeth are removed. When your remaining teeth are removed the denture can be inserted immediately.  

Because the denture is placed over the new extraction sites it will actually prevent swelling. The denture should not be removed for 24 hours and only by the dentist the day after you receive your new denture.

Post operative visits will be required to check the extraction sites and make required adjustments to the dentures. 

Because the mouth will change after it heals, your dentures will need to be evaluated at 3 month intervals and will need to reline to fit the changes that have occurred in your mouth.