I have been advised that I should consider a fixed form of denture for my upper jaw. At present I have just two natural teeth left one of which is a molar soon expected to fail - and this molar is used to anchor my present denture. I have been offered two solutions after extraction - The first is to have four implants installed with healing caps left in place for a number of months to allow bone to settle, and during this time to wear a loose temporary plastic denture. The second option is to have the final metal arch fitted on the same day that the implants are installed - I think this is called " Smile in a day ". It seems the cost of both are similar at about £12,000. My questions are - What is the professional view of these two options, the pros and cons - and what alternative procedures might be available.