Dental Film
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The Victor-Bolin dental X-ray film container above, probably dates from 1930 or so. Leonard Bolin held the patent for film holders referred to on the tin: Patent 1537925.
Size: 2.75" x 1.75" x 1.5"
Introduced in 1924, the Kodak Radia-tized dental X-ray film shown to the right had two important advantages: it employed non-flammable cellulose triacetate and a used a double emulsion. The latter feature prevented the film from curling when dried, but more importantly, doubled the speed of the film which cut the dose to the patient in half.
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Size: 2" x 1.5" x 1.25"
Reference
Karjodkar, F.R. Textbook of Dental and Maxillofacial Radiology. Jaypee Brothers Medical Publishers.