I do NOT have pericoronitis or periodontitis...I was treated at the dentist for a crown to replace a filling...there was no decay or infection at the time. The evening after the treatment my cheek, on my jaw line the same side and area that was worked on, swelled and was very painful. The gum is not swollen. The emergency room couldn't figure it out, the dentist couldn't figure it out and the best so far is I am taking antibiotics for three days, but they have not made a difference. Please help.