My son has been complaining about tooth pain off and on for little over a month. I took him to my dentist who x-rayed and did an exam and found no cavities, injury, nothing abnormal about the tooth involved. My son had severe pain on Friday evening and woke up with a swollen cheek on Saturday. Took him to the ER where another dentist took x-rays, did an exam, etc. Tooth seems sensitive, but no real abnormalities seen. He prescribed antibiotics and indicated he believed he would likely need two root canals. My son woke up on Sunday with even more swelling in his cheek, so I took him to an Emergency Dental clinic. Took x-rays, exam, again the tooth shows some sensitivity, but still no abnormalites apparent. The dentist did opt to do an incision and drain the infection, which did help. My son does not recall any trauma to his tooth or that side of his face. He is only 11, doesn't have any cavities in his mouth and this a fairly new adult tooth. Everyone seems to think there is probably an abscess involved, but there is not explanation as to how it would have gotten there. Is there a possibility that something else could be going on?