If it's area specific, then need to check the teeth associated with that region
And if it's generalized on borders or tongue, need to treat locally as well as systemically
Next Steps
1. Post few pics if possible
2. Multivitamins and nutrient diet
3. Consult nearby destist
Health Tips
Keep teeth clean and if any roughness is with teeth or cervical areas of teeth, get it removed and it may warrant scaling once in 6 months