Firstly an X-ray to check if there is tooth cavity or decay.
Clinincal check if there is tooth wear
Treatment plan- Filling if decay is not involving the Pulp, cost varies from 600-2500 depends on clinic to clinic
Root canal if the decay is involving the pulp, cost varies from 1500-6000 varies from clinic to clinic.
Next Steps
Medications any sensitive pastes available in the market
Health Tips
Always go to a reliable dentist.