Root Canal Extraction of Maxillary 2nd Molar W/severe Bone Loss. Is There Hope for Implant?

My root canal has been infected - For years my old dentist couldn't see anything with x-ray & dismissed by telling me to take Advil. Cap recently fell off, found new dentist, got me on antibiotic, got a temp, but face began to swell. I was sent to second doctor who uses the Picasso Trio Dental CBCT. He found dramatic bone loss, some areas that there is no bone at all! I was put on very high dose antibiotic. Should I be worried, will this be a difficult root canal extraction? Feedback appreciated