Is it dangerous to have one root canal filled with a different brand of material than the other two roots?

I had an unfinished root canal procedure a day ago. Upon what was supposed to be my second and last visit to the dentist, and during the procedure, my dentist and his assistant realized that they did not have the appropriate size fill in material from the same brand for all of my three roots. He decided to use two of the same brand in two canals, and one of the other brand in the last. It sounded like one of the differences between the material was the size specifications differed from one brand to the other, plus the oven in which they placed it to prepare for insertions differed. Will this complicate things? He filled the crown portion with temporary material and scheduled me to come back four days later. This morning I woke up feeling swollen on that side of my jaw. Help! I'm nervous about this whole thing. I will not go back to him after he finishes this whole procedure. Thanks!