I'm in the process of having a tooth implant. I had a synthetic bone graph done a week ago. They stitched the area. But about 4 days ago I developed a canker sore near where it looks where maybe a couple of stitches may have ripped. This is the second time they had to fix the graph and restitch (the stitches had come loose and the power had started to dropped down a lot). I'm still on antibiotics, and ran out of my pain killer. Help! This canker sore is horrific !