PMID: 2490844Jul 1, 1989Paper

Influence of ambient storage temperature on radiographic density and contrast of dated and outdated film

Revista de odontologia da Universidade de São Paulo
P C WatanabeG M Campos

Abstract

The authors studied the influence of storage conditions of date and outdated films and the action of environment temperature over the same films. Four groups of films were studied: twenty-five outdated and twenty-five date films were under refrigeration; twenty-five date and twenty-five outdated films were under 36 degrees C temperature and 70% hygrometric for thirty days. Afterward, the films were exposed to radiation X at standardized conditions, together with an AI stepwedge penetrometer, to measure optical density; also the processing conditions were standardized. The results showed that temperature action and films date and outdated produced changes in the optical density and radiographic contrast.

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