Dentist - Inside cheek burn?

Call them and ask.

I think you should go. If your doctor says that the recovery is quick then may be it is. You can ask your doctor about the procedure used in your treatment and the full recovery process.

He said "recovery" is quick, not so that the pain will go away fast.

You might call first before making new appointments. I guess that a week is an average time for pain to diminish.

The inflammation is a normal reaction of your body, and if there is not fever, then it is just to let the body to heal itself.

After two or more days, if the pain still the same or worst, if you have fever, or other symptoms are added, then just show up and ask for immediate treatment.

The body heals different from person to person, and lots of things play in the process, like age, health status, and in this case may be how much food is making contact with the affected area.

I guess that the dentists might prescribe you Ibuprofen or similar besides the antibiotics.

If you are in doubt then consult with another dentist regarding the treatment and whether the recovery process is quick or not.

Better to go and consult him once again

Go and consult another dentist as soon as possible.