In this case report Dr. Gentry demonstrates the importance of taking a radiograph when seating the custom abutment and crown before final torquing of the gold implant interface connecting screw.
Here’s an example from a case I was doing with a dental student involving the 2 upper front teeth. In the first x-ray the impression copings were not fully seated. I re-positioned the copings and another x-ray was taken to confirm proper alignment. You cannot tell without an x-ray since this is below the gum-line.
Here’s an example of another implant check x-ray to verify proper seating.