Sensitometric evaluation of a periapical radiographic film Dentix E?: effect of different processing conditions / Avaliação sensitométrica do filme radiográfico periapical Dentix E: efeito de diferentes condições de processamento

ABSTRACT

Objective: Knowing the properties of new radiogra-phic films is essentially important, because from this evaluation depends the learning of such films, directly affecting the radiation dose received by the patient in radiographic examination. Thus, the aim of this study was to evaluate the sensitometric properties of a new film ? Dentix E?, and compare it to E-speed? and Insight? films, processed with different liquids and under different conditions. Methods: The films were exposed at predetermined times and manually processed, using the temperature/time method and ready-to-use liquids from Kodak and Prograd, and were automatically processed with Kodak liquids. Later, the density of those X-rays was measured and the characteristic curves were built in order to determine their sensitometric properties, such as contrast, indicative value of sensibility, and latitude. The values of properties were evaluated by the inclination of curves in the graphs and by descriptive statistics. Results: It was possible to observe that Dentix E? film presented similar characteristic curves and sensitometric properties to E-speed? film, regardless of processing. Conclusion: This result indicates that Dentix E? presents contrast, sensibility, and latitude compatible to films classified as E sensibility.