AFP Imaging Corp. (Elmsford, NY) and its DENT-X International subsidiary have completed the acquisition of ProDen Systems Inc. (Vancouver, WA), a supplier of video-imaging, intraoral dental camera systems for chairside computer screens or monitors. . . . Imaging Technologies Corp. (San Diego, CA) has completed the acquisition of Color Solutions Inc. (Cardiff by the Sea, CA), a color-management-software development company. . . . Trex Medical Corp. (Danbury, CT) has agreed to buy Trophy Radiologie (Paris, France), a manufacturer of digital dental x-ray systems.