nyuszisue,

Thanks for posting the x-rays.

First of all the roots of this tooth were in very close proximity if not directly in communication with the sinuses. Because these xrays are only 2 dimensional, the angle of the xray offers a diagnosis based on what is visible from that particular angle. So if the xray had been turned slightly, then a different view would be seen. So the ideal way to know for certain just how close the roots were to the sinus would have been at the time the tooth was removed. Did the dentist ask you do a sinus perf check? This is when the dentist removes the tooth, holds your nose closed and asks you to gently blow through your nose. If bubbles are seen inside of the socket when you do that, then that indicates a sinus perforation. If no bubbles are seen then it is assumed that there is no perf. DO not try to do this yourself now as the site has closed over and you could not see up that far into the socket anyway.

Okay so if you look at any one of those x-rays you will see a small white artifact up in the bone just past the end of the roots. It looks white and almost shiny. From the angle of these x-rays I would say that white spot is either a piece of filling material from an old mercury filling that got lodged in the tissue and worked it's way up that high or it is root canal filling material that was "overshot" through one of the large canals and into the sinus during the root canal procedure or it is a small piece of bone splintered off from the palatal root. Based on these x-rays I'm betting it is the rc filling material... but it's hard to tell. Can you get an x-ray of this tooth prior to the root canal procedure? Because that would tell more of the story about this white spot.

This foreign blob of whatever is a constant irritant to the sinus. It may be causing inflammation and bacteria may be growing around it and it may work its way out either through your sinus or gradually move down towards the gum tissue. Or it may just stay where it is indefinitely. There is no way to tell what it will or won't do. This material should have been removed during the removal of the tooth. However, the OS either didn't go after it or he felt it was up too high to retrieve without messing too much with the sinus in the hope that it will not cause a problem or work it's way down and out.

Irrelevant .... the dentists should have informed you of this piece of material sitting in that space. The sinus scan may have picked this up. So it may be helpful to bring these xrays and to your ENT and let him take another look at the scan purposely looking for this.

It would be helpful if you got the pre op root canal x-ray from your dentist and posted it here.