<s>[INST] I had a traumatic tooth extaction of my last molar Wed. and I am in pain. I did my salt rinse tonight and our came brown and white stuff and then it left a giant black hole in my mouth. I am hurting very badly and I can tell I have a little swelling in my cheek. What could this be??? [/INST] if it was last molar in the lower jaw then dont worry this is expected. u need to continue your warm saline gargles. dont talk much or try to open your mouth wide so as to give some rest your oral muscles. also spray jet of betadine solution from a syringe. if your pain continue more than a week post extraction then you need to visit a dentist. </s>