These films are useful for both extra-oral and intra-oral views
although their intra-oral use is limited depending on the size of
film and the size of the mouth. They provide very good radiographic
Dental film is available in six speeds, labelled A, B, C, D, E
and F. Only D, E and F are used in practice with E (or "Ektaspeed"
) being the preferred speed, in order to reduce radiation exposure
to operatives and patient. F speed film (Kodak "Insight")
became available in 2000 but is not in common use in veterinary
dental practice as yet.
There are also six sizes of film available, with size 4 (57mm x
76mm) and size 2 (31mm x 41mm) being most useful for veterinary
Available as ECO 30 and the Hanshin system in periapical
(size 2) format only. Size 2 is too small for most dog teeth and,
therefore, their use is limited to smaller dogs and cats. The ECO
30 films come ready packed with a monobath containing both developer
and fixer, and so do not require a darkroom. The film develops and
fixes in 50 seconds. The Hanshin system uses an injector system
to run the chemicals into the film envelope. Both systems are expensive,
costing more than £1 for each film.