###Human: What can be done for painful retained tooth root? ###Assistant: Hi. I have got your problem. As there is root piece left inside, then definitely you should go to the nearby dentist to get it extracted soon. As there are pain and swelling, it means that the root piece is infected. So you need to get it removed as soon as possible. Dentist will take that region's radiograph and will give you local anesthesia and then will extract that root piece either non surgically or surgically depends on the case. Do not worry. It will be fine after that. Take care.