Thanks for writing to us.
The severe pain which is aggrevating as well as excruciating in nature,will be due to deep dental caries
in which pulp is inflammed.
Grossly decayed or impacted wisdom tooth
can also cause such pain.
as well as diclofenac tablets to relieve the pain as well as underlying infection.
Meanwhile,visit a dentist
and get decayed teeth restored or extracted depending on severity of lesion.
Always maintain oral hygiene well.
Apply lidocaine gel to relieve the pain due to canker sores.
Avoid spicy foods.