Dear Strength I know its tough but if I were you Id have it pulled. I went through exactly the same dilemma, having already lost the one next to it. But it was only when I had it pulled, they discovered a cyst and abcess underneath, mine was also filled up to the gum with Mercury, I would never have another root canal filling, as I found this started my problems, the root was filled with Cadnium and I found much later I am allergic to it. hugs Tracy