question: Hi there :), i recently had 2 root canal treatments on a molar in the lower left side of my jaw. Before the 1st treatment, i had no pain in the tooth, but after the procedure my mouth felt like it was on fire. I returned to my dentist on friday, who carried out a 2nd root canal. It is now sunday, and following the 2nd treatment the left side of my face has swollen ans become hard to touch. There is no pain in the tooth, but i am a bit worried that this swelling has appeared almost 48 hours after the treatment. Any advice would be greatley appreciated. Thanks in advance :).