Dentures are a removable replacement for missing teeth and surrounding tissues.
Full dentures are used when all the teeth are missing, while partial dentures are used when some natural teeth remain.
Dentures can be either "conventional" or "immediate".
Conventional dentures are made after the teeth have been removed and the gum tissue has begun to heal, a conventional denture is ready for placement in the mouth about 3 months after teeth have been removed.
Immediate dentures are made before the removal of teeth and can be positioned as soon as the teeth are removed. This means you don't have to be without teeth during the healing period. However, bones and gums shrink over time, especially during the healing period following tooth removal. Therefore a disadvantage of immediate dentures compared with conventional dentures is that they require more adjustments to fit properly during the healing process and generally should only be considered a temporary solution until conventional dentures can be made.