### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I had a partial root canal roughly 36 hours ago on my lower left rear molar (wisdom teeth extracted years ago).  The doctor drilled out the pulp (noting that it was mostly dead) and put on a temporary filling until the root canal specialist could see me.  Now, about 36 hours later, Im in quite a bit of pain again, both on the tooth that was operated on and in a molar on the top of my jaw and in the back jaw muscle.  My neck is rather swollen too and is tender to the touch.  I have plans to travel tomorrow by plane to see some family and go diving.  Is my condition something that requires immediate attention?  Should I not be flying or diving?

### output:

Welcome to Chat Doctor forum. Dead pulp inside a root canal is almost always infected with several bacteria. Now, while removing those dead pulp/ remaining tissue or washing the root canal, there is every possibility that some part of that infected material pushed through the root apex foramen(hole) to the surrounding area. Naturally that area become infected and in many instances the infection expressed as an acute infection of root apex area with pain and may be with swelling. It is called ENDODONTIC FLARE UP. It may happen in 50% patients after the cleaning of root canal. The dentist has no control over it. There is no need of postponing your travel schedule. You should start an antibiotic like Augmenting or same type (Amoxicillin 500 mg + Clavulanic acid 125 mg) 8 hourly for 5 days. Along with that you have to take Diclofenac 100 mg + Paracetamol 500 mg, 3 times a day in full stomach. If you have a history of excessive acidity, you have to take 10 ml of any liquid antacid before taking Diclofenac.  Your pain will subside with in 2 to 3 days. But continue Antibiotic for 5 days. Best wishes.