Conversation: The conversation between human and AI assistant.
[|Human|] I am a 40 year old female.  Today, my Dr. put silver nitrate on canker sores on the insides of my lips.  My lips are now swollen and black on the insides.  When will the black stains disappear & the swelling go down & is there anything I can do to speed up the process?
[|AI|]  Thanks for using Chat Doctor. Read your query. Some medical professional do use silver nitrate to be applied for canker sore. It chemically cauterizes the nerve endings in the area and usually result is a potentially longer lasting ulcer but it doesn't hurt during the healing period. The swelling and the stain will take an around a week to resolve and get the normal tissue. Do salt water gargling and if painful, you can apply denote /McCoppin ointment to relieve symptoms. If the swelling and blackness is still persisting after a week or so, please report back to your doctor. Hope this was helpful. Thanks and regards.