I went a root canal specialist to treat my infected root canal. During the treatment, the file was broken and stuck in my jaw bone. The broken file went about 10 milimeters( more than 1/4 inch) beyond the root canal. The doctor cut my jaw bone and tried to remove the file, but failed. The doctor said the file was sucked by jaw bone, but I didn't agree. I think it was overdrilled and caused the file broken. Does anyone have idea what is the situation?