Abstract: A film positioning system for dental X-ray and digital radiography procedures including a number of film or digital sensor carriers (bite wing, anterior, etc) each including a film or sensor holder on one end and an extending attachment rod, and an X-ray tube aiming device including an attachment rod holder, the attachment rod and the attachment rod holder keyed to correctly align the film holder with respect to an X-ray cone or tube. One example includes a non-equilateral pentagon shaped rod holder receptacle and a non-equilateral pentagon shaped attachment rod.