Hi sir....
That bottom corner tooth may be normal molar teeth or wisdom teeth...
If it is normal molar teeth ,teeth ache may be due to chronic pulpitis (irrversible condition which invloves pulp layer(Nerve layer) that elicits pain...
Then the treatment will be Root canal treatment followed by capping of teeth
If the pain is due to wisdom teeth , then it needs surgical removal followed by analgesics and antibiotics...
First and foremost x_ray(IOPA) is to be taken to rule out the teeth
Next Steps
kindly visit nearby dentist for furthur consultation and management..
Health Tips
Avoid self medications