Conversation: The conversation between human and AI assistant.
[|Human|] I I went to dentist 2 days ago,and he worked on a  back molar and replaced a very old filling with a temporary one. The next day I felt a lump behind my ear that hurts to the touch. Please advise? My age is 73; wt: 119 Med history. I have had cataract surgery several years ago, 2 back surgeries, and slight;y elavated blood pressure and cholesrtral
[|AI|]  Hello, thank you for consulting with Chat Doctor. Just a filling in the molar tooth can not cause this kind of swelling.  But it can be possible that your tooth is infected, and this infection has caused the lymph node which is present behind the ear palpable. For this problem you should visit your dentist again and Tet x-ray done of the tooth as it will show the spread of infection and if necessary go for removal of the tooth. Till then, you should continue with antibiotics. Hope it will help you.