What a sobering experience... you are all good now, I hope?
My endodontist was very happy with what she found, and her remediation work. So much so, that instead of filling with a temporary filler (which is normal, as you assess the success of the root canal) she went ahead and filled it with the final filler. (After assessing me of the situation, her evaluation, and asking my permission.)
I get to keep my tooth (at least for the short term), and am not in pain, won't have any more temperature sensitivity, and possibly my overall health will improve as the infection in my jaw bone goes away.