Get ur teeth and inner cheek evaluated y some dentist. Healing will take its own time, just maintain oral hygiene for healing to be uneventfull
Next Steps
Apply Ornidazole or Chlorhexidine oinment locally where wound is visible two times a day
Health Tips
Do not touch it repeatedly by ur tongue and avoid biting from that side coz that wounded tissue may come between ur teeth and may get traumatised