My own personal experience and that if my son as well has been that temporary fillings are a load of bollards and are primarily a means of getting you out of the surgery happy. I sincerely hope that your mileage varies considerably !!.
Hopefully mine last and im sorry yous have had a bad experience with them. Didn't think they wanted me out surgery they gave me a root canal then finishing it on the 16th. It was an emergency appointment