Hi Dear,
Welcome to HCM.
Understanding your concern.
Thanks for your query. The symptoms you mention in query are indicating towards a condition known as linea alba . There can be many reasons for linea alba like cheek bite ,
bruxism (teeth grinding at night),
tobacco chewing ,dental appliance and sharp cusps on posterior teeth. Usually its painless and benign condition ,but if become painful (as in your case ) it means severe injury to mucusa .
I would suggest you to consult dentist/oral pathologist for proper examination .Doctor may examine bite plain ,look for sharp cusps and may order
biopsy if necessary to rule out other cause like
leukoplakia .
Doctor may extract wisdom teeth ,grind sharp cusps , correction of appliance (if there is any) ,give mouth guard in case of bruxism and do counseling for correct bite . Sometimes minor surgery or anti fungal therapy is also required in case of leukoplakia.
For now quite
smoking and chewing tobacco (if you are doing) , rinse your mouth with
chlorhexidine mouthwash twice a day and rinse mouth with
hydrogen peroxide (1%-2%) solution once daily .
Hope your concern has been resolved.
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Get Well Soon.
Best Wishes,
Dr. Harry Maheshwari