Digital Radiography Versus Conventional Radiography in Dentistry

Belma Muhamedagic, Lejla Muhamedagic Faculty of Medicine, University of Sarajevo, Bosnia and Herzegovina ography-RVG, Trophy Radiologie, Croissy Beaubourg, France [now Trophy, A Kodak Company, Rochester, N.Y.]). RVG is modern diagnostic method based on use of digital roentgen. Principle is use of so called CCD chip in RVG sensor (Figure 1) that put in patient’s mouth (3). The first dental digital system was capable only of acquiring a radiographic image; the image could not be stored on disk but had to be printed. however simple it appeared to be, it marked the start of a new era. shortly thereafter, another system was developed by Per Nelvig and colleagues (sens-A-Ray, Regam Medical systems, sundsvall, sweden), and within a decade many more manufacturers entered the market. Digital systems have improved considerably since then and now are a well-accepted and useful technology in dental diagnosis (1). Digital radiographic images can be produced in different ways, some simple; flatbed scanners with a transparency adapter, slide scanners and digital cameras all can be used to convert an existing analog radiograph into a digital image. There are two more advanced technologies that create digital images without an analog precursor: “direct” digital images and “semidirect” digital images. Direct digital images are acquired using a solidstate sensor. The solid-state sensors are based on charge-coupled device (CCD) or complementary metal oxide semiconductor (CMOs)-based chips. semidirect images are obtained using a phosphor plate system. Solid-state systems. CCD technology. Most solid-state sensors in digital dental radiography are based on CCD technolo85-89