Tooth pain can be caused by many reasons like tooth decay, damaged filling, tooth fracture, infected gums etc.
Some toothaches may come from temporary gum irritation. But serious tooth pain needs treatment by a dental professional to resolve the pain and whatever problem is causing it.
Please attach the photograph of the concerned tooth and give the detailed history of pain.
Next Steps
Visit the dentist for definite clinical evaluation and treatment.
Health Tips
Brush and floss at least twice a day. Maintain good oral hygiene.