Hi Jeanne, I wouldn’t think it was “phantom pain” necessarily. It is possible that the removal of teeth and the addition of an upper denture has increased or changed the pressure on parts of your lower denture. The change could cause pain. Definitely share the change in your comfort level with your dentist. It may be just that your lower gums need to adjust, or it might be something your dentist needs to address. Hope this helps, and thanks for writing!