Objective and subjective analysis of the image quality of two E-speed dental X-ray films

I. Kaffe*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The image quality of two brands of E-speed intra-oral film (Ektaspeed EP-21, Kodak and Dentus M4, Agfa Gevaert) was compared after exposure at 70 and 90kV and development in four different processing solutions. An aluminium stepwedge and a quality assurance phantom were used for objective and subjective evaluation. Both brands of E-speed film were found to be of almost equal image quality regardless of exposure or processing conditions. Minor differences were found in the objective tests; Dentus M4 film showed slightly higher relative speed and contrast and lower base plus fog values than Ektaspeed EP-21 film. In the subjective assessment, there was a slight tendency for the examiners to prefer the Ektaspeed EP-21 film. The best combination was Dentus M4 film exposed at 70kV and automatically processed with Periomat (Durr) solutions. Both film brands appear to be adequate for clinical use.

Original languageEnglish
Pages (from-to)55-58
Number of pages4
JournalDentomaxillofacial Radiology
Issue number2
StatePublished - May 1990


  • Radiography
  • X-ray film
  • dental
  • quality control


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