hello and welcome to HCM forum,
I would like to inform you that root canal treatment has nothing to do with the knee surgery. You can continue with your appointment for knee surgery. In fact your dentist might have prescribed antibiotics to you, so kindly follow that prescription.
I will advise you to visit your dentist soon, as the infected tooth needs to be treated.
i hope this answer was useful,
i wish you good health.

hello and welcome to HCM,

Tooth ache indicates bacterial decay or infection in the tooth that involves the exposed tooth nerve tissues .

such infected tooth needs to be treated by a root canal procedure so please consider getting the treatment done by consulting a dentist.

you may need a X RAY examination done for your teeth to confirm the spread of infection.

i would suggest you to start with antibiotic Augmentin 625mg along with analgesics like aceclofenac two times daily for 3 to 5 days .

This course of medicines will help in subsiding pain and and prevents infection till you go for knee surgery.

You can plan for knee surgery as both the procedures are not related.
i hope this helps ,

take care.

Hi,

Thanks for asking the query,

According to your clinical symptoms i suppose that you have developed re-infection in your root canal treated tooth which needs to be retreated.
I would suggest you to take a course of antbiotics and analgesics under the prescription of your Dentist.
Take an x-ray of the tooth and plan for the re-RCT.
Knee surgery has no relation with tooth treatment, so you can proceed with the treatment.

Hope this helps out,

Regards...