The objective of this study was to understand how optical and thermal performances are impacted in a remote phosphor LED (light-emitting diode) system when the phosphor plate thickness and phosphor concentration change with a fixed amount of a commonly used YAG:Ce phosphor. In the first part of this two-part study, an optical raytracing analysis was carried out to quantify the optical power and...

The aim of this study was to assess the use digital dental radiology in Brazil, by focusing on image receptors, imaging exams and enhancement tools, also assessing methods professional transfer. Questionnaires were distributed person meetings digitally via messaging (WhatsApp®) mailings list. sample cross-sectional consisted 478 questionnaires. Most participants woman (n=315, 65.9%), with avera...

PURPOSE Technological advances in intra-oral receptors have resulted in film-holding devices that may or may not be interchangeable with photostimulable phosphor receptors. This study evaluated the number and types of technique errors that occurred when using PSP receptors with a standard film-holding device and a dual PSP/film-designed device. METHODS The Rinn XCP-ORA® (Standard) and the Rin...

OBJECTIVES This study aimed to compare the diagnostic accuracy of inverted and unprocessed digitized periapical radiographs for detection of peri-implant defects. MATERIALS AND METHODS A total of 30 osteotomy sites were prepared in three groups of control, study group 1 with 0.425 mm defects and study group 2 with 0.725 mm defects using the SIC and Astra Tech drill systems with 4.25mm and 4.8...

A non-film-based system was used to obtain high quality portal film images. Digital portal images were obtained with a computed radiography (CR) system, in which the film is replaced with a photostimulable phosphor plate. Digital processing of portal images enhanced the display contrast using regional histogram equalization. The images were compared to images on radiographic film, exposed in th...