Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns.
As per your complain swelling in mouth seems to be most probably due to
Dental Abscess as the pus formation below the root tips of tooth can perforate the bone and get accumulated in the soft tissues leading to swelling inside the mouth as well as on the cheek..
He should continue taking the antibiotics and if there is pain anti inflammatory painkiller like
Advil can be taken..
Do cool compresses over the cheek..
But one thing I would like to tell you that antibiotics can reduce the swelling and infection to some extent but it will not provide permanent relief..
In order to get permanent relief you should consult your
dentist and get an
x ray of tooth done..
If the tooth is in condition that it can be saved
Root Canal Treatment followed by antibiotics and painkillers will provide permanent relief..
In case if tooth is grossly decayed and cannot be saved extraction is advisable..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.