Hello,
I have had a few dogs throughout the years that this has happened to. They getting a fight and avulse (pull the tooth out of the socket) the tooth in the process. For these cases I always do a dental and remove the tooth (it will not heal) and then close the gums after removing the broken bone around the tooth root. Your dog is essentially going to lose that tooth but with the dental surgery you can close the area so that they don’t have pain or get infections. Please see your vet asap and talk to them about this. Until then I would feed soft food and avoid playing with toys.
Hello,
It sounds like you have done a pretty thorough work up. The places I think that you should look into are;
Repeat the blood work. It sounds like hyperthyroidism. I always check a free T4 on top of the thyroid T4. I also check a urine. If you haven’t sent a fecal to the lab too.
After that the ultrasound and X-rays are where I look.
You are still at the place where the diagnosis is eluding you. That’s where you need to focus.
PS. Just for the record I don’t love starting pred until you have a diagnosis. It can obscure your diagnostics.
Good luck. I hope this helps.