My provisionals are disasters more often than not... The general technique we were taught was to make an impression of either the tooth or cast using putty or alginate. That gets filled with the temporary crown goo and seated on the prep and allowed to set. Then the temporary crown is trimmed and cemented and it's supposed to look perfect. My margins never line up well, and I often have patients phoning a week later saying the temporary fell off. Can anybody give me any advice on what I could be doing wrong, or tips on how to improve? Thanks!!