Quality of periapical radiographs taken by undergraduate students during endodontic treatment
Journal Title: RSBO - Year 2009, Vol 6, Issue 1
Abstract
[b][/b]Introduction: Correct radiographic interpretation depends on the availability of high quality images, free from technique and processing errors. Documenting the kind and the frequency of errors, as an integral part of a quality assessment program, will help to identify and to correct existing deficiencies. Objective: To evaluate the quality of radiographs obtained by Endodontics students from the undergraduation course of a public university. Material and methods: A total of 1,823 radiographs were analyzed, of which 1,408 were taken with the use of a film-holder and 415 without it. The radiographs were made employing the same kind of film (Insight – Kodak) and of X-ray units (50 KV), with a 0.8-second exposure time, and they were processed in acrylic boxes using the visual method. With the help of a magnifying glass (2.5X) and a viewbox, three examiners analyzed the radiographs and registered errors related to the following parameters: image contrast (light or dark), vertical and horizontal angulations, positioning (film and/or radiation beam), and radiograph processing (improper fixative,stains, streaks). Results: Statistical analysis showed no significant differences among the examiners. The highest frequency of errors was seen in the radiograph processing, followed by the positioning and image contrast; light images were more often registered than dark ones.Conclusion: Considering the positioning and the vertical and horizontal angulations, the errors frequency was statistically higher in radiographs taken without a film-holder, except in the mandibular molar group,where the frequency was statistically similar in both situations.
Authors and Affiliations
Mara FELIPPE, Maria NASSRI, Patricia BURGOS, Sérgio FREITAS, José LAGE-MARQUES
Keywords
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