Hi TooTired,
Two things come to mind, one, did the dentist place any graft material in the extraction site and was there any sinus exposure during the extractions? Did he take a panoramic radiograph today or just two spot xrays?

What have you been rinsing with since the extraction? If you are rinsing with salt water that's great, but the water should not be hot, it should be warm only. You should not be rinsing with anything other than warm salt water because any kind of mouthwash, even peroxide, can cause that scalding sensation to the tramatized tissue.

Is that scalding feeling new or has it been like that since the extraction?

It could be a neurological response to the oral surgery, but I don't think you would have a sulfuric, salty metallic taste if that were the case. That generally is indicative of an infection and the salty often means sinus involvement.

Keep us posted on what the ENT tells you. I sure hope it's easily remedied!

Bryanna