I had tooth #14 which was previously root canaled surgically extracted on 03/03/2016 , so 3 and a 1/2 weeks ago, and I had a sinus communication. I think it was a small opening, because I had water coming out of my nose and could hear the air flow the next day only and after that it stopped. When I had my follow up with the OS a week after the extraction, he said it closed up, only based on he closed my nostrils with his fingers and making me trying to blow air.
Luckily I never had to sneeze since the extraction, I don't blow my nose since then, and it feels like the site healed nicely. But i still have the question in my head, can that hole reopen ? The main reason why I am asking this is, at my workplace there is some kind of a cold or flu going on, so I was wondering if I get it and my sinuses get inflamed or something, will that have a bad effect on that sinus communication site ?
Thank you.