Radiographic image quality after interruption of the fixing stage to view the image with a viewbox

Authors

  • Anna Débora Araújo Lourenço UFPB
  • Andréa dos Anjos Pontual UPE
  • Márcia Maria Fonseca da Silveira UPE
  • Maria Luíza dos Anjos Pontual UFPB

Keywords:

Quality control, Dental Radiology, chemical process, densitometry

Abstract

Purpose: To evaluate the quality of radiographic images with regard to the time during which the fixing stage was interrupted to allow a preliminary reading of the image in the viewbox. Methods: Radiographs were taken with 130 Insight® periapical films, including a step-wedge and lead plate. The films were distributed into 13 groups according to the time taken for reading in a viewbox: 0 (control), 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140 and 150 s. During processing using the temperature-time method, the films in the experimental groups were removed 5 s after immersion in the fixer, placed against the light of a viewbox for the studied times and then re-immersed in the fixer to complete the fixation process. Base-plus-fog density and the densities of the first and last degree of the step-wedge were measured immediately and after six months to calculate the contrast. Results: There were no significant differences with regard to the base-plus-fog density or the contrast values of the experimental groups when compared with the control group. Conclusion: It was concluded that interrupting the radiograph fixation process to read the image in a viewbox does not interfere with the base-plus-fog density or with the radiographic contrast, even six months after they were taken.

Author Biographies

Anna Débora Araújo Lourenço, UFPB

Aluna de graduação do curso de Odontologia da UFPB

Andréa dos Anjos Pontual, UPE

Profa Dra da Disciplina de Radiologia Odontológica da Faculdade de Odontologia de Pernambuco da UPE

Márcia Maria Fonseca da Silveira, UPE

Profa Dra da Disciplina de Semiologia da Faculdade de Odontologia da UPE

Maria Luíza dos Anjos Pontual, UFPB

Profa Dra Maria Luiza dos Anjos Pontual Radiologia Odontológica da UFPB Departamento de Clínica e Odontologia Social

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Published

2010-01-22

Issue

Vol. 25 No. 1 (2010)

Section

Original Article

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