Sensitometric evaluation of a new E-speed dental radiographic film.

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Abstract
A new Kodak E-speed dental X-ray film, Ektaspeed Plus, was compared with Ektaspeed and Ultra-speed. The new film was very nearly twice as fast as Ultra-speed and, unlike Ektaspeed, it maintained this speed throughout the useful density range. Ektaspeed Plus film contrast was similar to that of Ultra-speed and much greater than that of Ektaspeed at higher density values. Preliminary evaluation of resolution showed that Ektaspeed Plus had at least as good resolution as Ektaspeed, though both emulsions were inferior to Ultra-speed. It is concluded that Ektaspeed Plus could prove an acceptable alternative to Ultra-speed film.