Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns.
As per your complain tooth pain along with burning sensation on the inner cheek seems to be most probably due to failed
root canal treatment and as the tooth pain did not subside even after root canal treatment, there is a possibility that there has been recurring infection in the tooth or any of the canal has been left unexplored leading to irritation of the nerve present in the canal and is causing pain..
Burning in the inner cheek and tip of tongue can be due to inflammation inside mouth leading to
Stomatitis..
I would suggest you to consult an Oral Physician and get evaluated and a thorough clinical evaluation and investigations like
x ray can help in ruling out the problems with the tooth..
As of now you can take anti inflammatory painkiller like
Ibuprofen to relieve pain in tooth..
You can take a
multivitamin tablet for Stomatitis and along with it do cool water rinses and gargle with numbing mouthwash containing Lignocaine..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora..