I am Dr.Neha Gupta (dentist
) and am glad to address to your query here.
no, it is not permanent.
I am absolutely sure that you will be fine in a few weeks.
But it will return to normal. the feelings you're having are quite normal and it's the nerves recovering from the minor surgery that's taken place in your mouth. bottom lip also had a burning sensation for a few weeks afterwards but it does go away.
Remember though that you've had minor surgery on a part of your body where nerves have been upset, and like every surgery, you have to let the body heal itself.
Hope this helps. I know it's easy to say but give it time and be patient.
Take care and please keep me informed of your progress at healthcaremagic through my profile directly.