Hi ,
U probably have a habit of habitual cheek bite or the edge of ur teeth is rubbing against ur buccal mucosa. So thats what u r seeing , when it is healing it appears slightly rough n pinkish and when healed its like a keratotic patch and is blackish. Dont try to bite or chew it . It vl heal. Its expected to get better after the wisdom tooth extraction . However in sm cases the edges of all the teeth on one side rub against buccal mucosa and so this happens and thats y u see its beside the lips too.
The deciduous stump should be removed too.
Answered2021-05-28 14:50:49
Let others know if this answer was helpful