A dentist treats chronic gangrenous pulpitis of tooth 47 in a 28-year-old man. What results of electric pulp testing confirmed the diagnosis of chronic gangrenous pulpitis?

Answer options

1. Electric pulp testing-110 microamperes
2. Electric pulp testing-10-12 microamperes
3. Electric pulp testing-60 microamperes
4. Electric pulp testing-2-6 microamperes
5. Electric pulp testing -20 microamperes