Cause of these sore could be related to
Vit
B12 deficiency
Stress
Used of painkillers
Tissue injury due to denture or tooth
H.pylori infection
Need to start on proper medications
Need a pic for better evaluation
Amlenox oral paste
Ora paste
Cap.Becosule
Tab. Gistress
Betadine gargle wash
Next Steps
For prescription consult me on practo