The Intrex-a constant-potential x-ray unit for periapical dental radiography

William D. McDavid, Ulf Welander, Bhas K. Pillai, Charles R. Morris

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


A comparison of beam quality has been made between the constant-potential Intrex and the Marksman I, a conventional self-rectified, pulsating-potential machine made by the same manufacturer. The combined effects of a constant accelerating potential and an increased thickness of aluminum filtration in the Intrex make possible the production of a radiographs at reduced levels of radiation with no significant loss of radiographic information.

Original languageEnglish (US)
Pages (from-to)433-436
Number of pages4
JournalOral Surgery, Oral Medicine, Oral Pathology
Issue number4
StatePublished - Apr 1982
Externally publishedYes

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Dentistry(all)


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