Which shows better detail of a missing molar buccal wall (extraction trauma) to a dentist--an digital x-ray or 3d ct scan? needs rebuilding.

CT: It will help get the full extent of the effected area.

Extraction trauma: A ct will definitely show more detail to your dentist, but it may not be necessary. Your oral surgeon can rebuild the area with a bone graft without a ct in most cases. A digital panoramic x-ray is all that is usually needed, but will only provide a two dimensional image. Simpler is usually better and less expensive!