The pain and sensitivity persists after the metal removal as replacement usually requires a good deal of space to 'set' properly, a lot of the tooth is drilled out. However, the pain can also be because of some microscopic air pockets that remain there during extraction and filling. Check with your dentist.
It could be a pulpitis in the tooth, meaning the nerve inside the tooth is inflamed. Is there cold or not sensitivity as well? If the pain doesn't improve gradually, I think a root canal may be needed.
Forgot to mention the pain doesn'tfeel like it is in the tooth. I can touch it and the dentist knocked on it without it being painful. Its more like a throbbing aching sensation that travels in tooth into my gum and the sometimes causes a bad headache