You need a deep scaling (cleaning) of your teeth. Toothache might be due to infection in the teeth. It would be better if you visit your nearby dentist and get it clinically checked and get an x ray done.
For pain - you can take
Tab. Ketorol DT (4) take whenever you have pain.
Next Steps
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Health Tips
use chlorhexidine mouth wash to gargle thrice daily. maintain oral hygiene.