“…Also the conventional images are interpreted against a light board which enables the radiologist to view several images, concomitantly, while digital images are read on screen at work station in succession or simultaneously, depending on the size and capacity of the screen, the soft ware and the amount of screens .Digital images can be postprocessed at the work station and the diagnostic output may thus be increased. (11,12,13,14,15,16) . Also the study shows that obvious difference were detected between film panoramic and tracing chart reading, in the measurement of appropriate length of implant, these differences are due to the same reason that mentioned in panoramic reading, beside that the tracing chart reading were as standard measures for both implant length and diameters that supply with the implant system, in which the oral surgeon depend on his standard measurements for selection of implant.…”