Volume : 5
Issue : 4
Online ISSN : 2320-1924
Print ISSN :
Article First Page : 150
Article End Page : 154
Objective: The aim of this research was to analyse the errors that are related to the periapical radiographic technique when using radiographic film (conventional radiography) and when using photo-stimulated-phosphor (PSP) imaging plates (IP) (digital imaging), together with X-ray machines utilising cylindrical and rectangular collimators.
Materials and Method: A total of 672 periapical radiographs of all of the maxillary and mandibular regions were performed with a mannequin model by dental students in their last year at the Dentistry School of the Pontifical Catholic University of Rio Grande do Sul (PUCRS), Brazil. Each student performed 32 radiographs. 16 radiographs were performed when using conventional film and 16 radiographs were performed when using photo-stimulated-phosphor plates, with eight (8) exposures utilising a cylindrical collimator and eight (8) exposures with a rectangular collimator.
Results: Horizontal angular errors were the most frequent mistakes (39.4%), followed by a poor centring of the film (25.9%). Cone cutting (22.8%), identifying marks with an incorrect positioning (11.0%), non-parallel or insufficient safety margins (8.6%), were also observed.
Conclusions: There were no significant differences between the technique errors when using radiographic film or when using the phosphor plates. There were more errors with the use of the rectangular collimator.
Keywords: Diagnostic errors, Dental radiography, Diagnostic imaging, Learning