S. Nesbit et al., COMPARING E-SPEED AND O-SPEED FILM - THE EFFECTS OF VARIOUS STORAGE-CONDITIONS ON FOGGING, The Journal of the American Dental Association, 126(2), 1995, pp. 205-210
Despite the reduced radiation exposure documented with E-speed film us
e, many clinicians still prefer D-speed radiographic film. The authors
tested Various storage factors and found that E-speed film is more se
nsitive to these variables than D-speed film.