Years and years ago, the technique for making dentures was much different than it is now. Dentists would have to extract all the teeth and wait for healing (6-8 months) and THEN make a denture that fit the healed tissue.  In this day & age, we can make whats called an Immediate or Interim denture. An impression is taken prior to extractions and a denture is made for you. The day you come in for the surgery, we extract your teeth and immediately place this denture. This way, you don’t ever have to be without teeth. Now, by doing this, means that there will be a period of time where you will have to wear adhesives or come in for soft relines in order for the denture to fit.  And eventually a new, better fitting denture will need to be made once healing is complete.  The Immediate denture is NOT required, however, most patients do not want to walk around with no teeth.