However, many famous film manufactures, such as Fuji Film (Kanagawa, Japan), Agfa (Mortsel, Belgium), and Eastman Kodak (Rochester, NY) are now withdrawing from the production of intraoral films because of the spread of digital detectors.
Until the advent of intraoral digital sensors, the development of film-based technology consisted mainly of the improvement in sensitivity and exam speed (F-speed film being the fastest one). Although silver halide emulsion-coated films are still in use in intraoral and panoramic radiography, radiography using digital detectors is now becoming mainstream. Lately, a computed tomography technique developed for use in dentistry, the so-called cone beam computed tomography has been widely used as well. The two commonly used methods are intraoral and panoramic radiography. In dentistry, radiography is one of the indispensable examinations. Keywords: Digital Intraoral radiography PSP CCD However, our latest research using a new evaluation method and a precise phantom model indicated some differences between the performance of CCD and PSP systems and further differences between PSP systems of different function and performance. In the early days, digital sensors were considered inferior to film in clinical diagnostics, but according to recent research results, there is no longer any significant difference because of the improvement in performance. These technologies have recently undergone considerable improvement, and several dental clinics have switched from film-based systems to digital imaging. Later on, other digital sensors became commercially available, including the Digora featuring an imaging plate coated with photostimulable phosphor (PSP) in 1994 and the complementary metal-oxide semiconductorbased sensor, CDR active pixel sensor, in 1998.
It was based on the activity of a charged-Coupled Device (CCD) sensor. The first digital sensor used in intraoral radiography, RadioVisioGraphy was introduced in 1987.
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