hello and welcome to hcm forum,
i would like to inform you that the white patches on the inside of your cheek are either due to cheek biting
or in some cases, chronic smokers, tobacco chewers get it but,you have not mentioned anything about your oral habits.
i advise you to use an antibacterial(betadine
) mouth wash(twice/day) for 1 week,
quit smoking /tobacco chewing
if you do it.
also, the cavity in your tooth needs to be restored, in order to avoid getting an infection.
i recommend you to visit your dentist
i wish you good health,