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About This Item


Full Description

Specifies requirements for film used for dental intra-oral (speed groups C and D) and extra-oral radiography. Definitions, sizes, shape and physical properties of intra-oral and extra-oral films are laid down. Appendices give methods for determining base and fog (emulsion and safe light) densities, and for determining speed and average gradient.

Document History

  1. AS 1139-1985


    Dental radiographic film

    • Most Recent
  2. AS 1139-1971

    Intra-oral dental x-ray films

    • Historical Version
  3. AS T21-1961

    Specification for dental x-ray films

    • Historical Version