Dan, I have a mouth full of fillings too. Most are 50 years old, although some have been replaced. I hope that your dry socket is no longer bothering you.
Right now I have the worst toothache I've ever had. It's been raging for about 24 hours. I couldn't sleep at all last night, waited until my dentist opened the office at 8 am and called. They couldn't get me in until 2:30. Very hard to wait when it hurts so much, not knowing for sure whether it's the tooth I think that it is or sinus pain mimicking a toothache, as had happened on several previous occasions.
They did an X-ray. It's the tooth, big abscess. The dentist gave me a script for penicillin, which I've started. I have to go back at 5:00pm for freezing then wait again for 45 minutes for the freezing to take effect. The dentist will open to relieve the pressure. At this point I'd gladly let him drill without the freezing, or pull the tooth, if it will stop the pain.
80 minutes to wait before I leave again. Trying to distract myself by posting here.