I've had a recurring sinus infection, coupled with severe tooth pain. do i possibly need a root canal?

Infection in tooth: An infection in this upper tooth can spread to the sinus. The tooth either needs a root canal therapy or an extraction. However you need to do it now since you currently have an active infection that needs attention now.

Maybe...: It sounds like there is an infection that is tooth related. If this is the case and your tooth can be saved, a root canal may be your answer. There are too many issues to resolve without a professional evaluation. See your dentist asap and get well ;-).

See your dentist...: I would not mess around with this. Please see your dentist to see if a root canal procedure is required. It sounds like you may well have an infection.

See a dentist: The tooth can be a potential cause of the sinus infection. See a dentist to have the your teeth examined. If there is significant tooth structure missing, then the tooth will need to be extracted. If there is adequate tooth structure to support a crown/cap, then a root canal will be recommended.