He then did a percussion test, tapping firmly on all surfaces of the tooth, and I had no
pain. So he recommended using Peroxyl to help the
gum heal, and just watching to see if the tooth got worse. Well, the gum healed and the foul taste disappeared. No more throbbing. But the sensitivity to hot and cold has steadily worsened. Now hot or cold food or fluids causes a fair amount of discomfort.