<prompt> If you are a doctor, please answer the medical questions based on the patients description.i was having much pain in a tooth that had had a root canal - no crown. went to dentist. received 12 lortab and a z-pak and was told the tooth was split and could not be saved. he referred me to an oral surgeon. this was friday, 824 12:00 noon. i just took my last lortab with extra strength bayer 2 and my last antibiotic pill. the pain has increased - beyond anything close to what it was friday and there is now a huge puss pocket that has formed above the tooth on the gum. my consultation with oral surgeon is tomorrow at noon. why am i still in pain? why have i developed this abcess if i have been on strong antibotics. how should i proceed. im desperate here...  <response>: Hi! Welcome to Chat Doctor. I read your query. As you mentioned having root canal in the same tooth without putting a crown over it. After root canal, because of removal of all blood and nerve supply of tooth, it becomes week. Therefore, a crown is placed over it. Since you did not have one, the tooth cracked under bite force and developed an abscess. As you finished antibiotic course, get the tooth removed and replace it with fixed or removable tooth after healing. Till then, take prescribed analgesic and do warm saline rinses. Hope the answer helps you. Thank you! 