For more information see here:
Best of luck!
Your best bet is to see an expert dentist right away, possibly to rinse with chlorohexidine solution, but it is a prescription! You might want to ask the dentist to do tissue conditioning treatment!
Best of luck.
1- Fixed permanent bridge (if you have adjacent teeth next to missing teeth)
2- Dental implant (if you have enough bone to support an implant)
3- Removable fixed denture, flipper for a tooth, or partial denture