A denture is a removable replacement for missing teeth and adjacent tissues. Complete dentures replace all the teeth, while a partial denture fills in the spaces created by missing teeth and prevents other teeth from changing position, similar to a bridge. Complete dentures are either "conventional" or "immediate." A conventional denture is placed in the mouth about a month after all the teeth are removed to allow for proper healing, whereas an immediate denture is placed as soon as the teeth are removed.