The general purpose of this study was to determine whether orthodontists could differentiate among extraoral profile images imported into the Dolphin Imaging software and viewed on a computer monitor and as prints. The images were obtained by using different digital cameras and different compression settings. Twenty-two orthodontists were asked to evaluate extraoral profile images of the same individual taken by using a scanned 35-mm slide and two digital cameras (Nikon 990 and Fujix DS-220) at different resolutions. For images imported into Dolphin Imaging v. 7.0, the following minimum digital image sizes were considered acceptable: (a) Nikon 1024 × 768 basic compression setting (80 kb), printed ABO size image; (b) Nikon 1024 × 768 normal compression setting (135 kb), presentation-size printed images; and (c) Nikon 2048 × 1536 normal compression setting (500 kb), monitor-displayed images. Of the digital camera images, the Nikon 2048 × 1536 fine compression setting (750 kb) consistently received the highest Likert scores and acceptance scores for diagnosis, presentation to peers, and to other orthodontists for all sets of images.
ASJC Scopus subject areas