File:Elementary and dental radiography (1813) (14570555538).jpg

Identifier: elementarydenta00rape (find matches)
Title: Elementary and dental radiography
Year: 1813 (1810s)
Authors: Raper, Howard Riley
Subjects:
Publisher: New York : Consolidated Dental Mfg. Co.
Contributing Library: Dentistry - University of Toronto
Digitizing Sponsor: University of Toronto

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ain a littleless dark, and so on. On the print, filled canals appear dark, unfilledones light, abscesses appear as light areas, and so on, always the oppositeof the negative. In order to avoid confusion of the right and left sides when studyinga negative, bear the following in mind: When looking at the negativefrom its film side it is as though you observed the part radiographedfrom the position occupied by the tube during the exposure. When look-ing at the negative with the film side presenting towards the light, awayfrom the eye, it is as though you observed the part from the position ofthe film during exposure. This is the case, granting that the sensitiveside of the film presented toward the object radiographed at the time ofexposure, a condition that should always obtain except when an intensify-ing screen is used. If the technic previously given is followed, and the sensitive side ofthe film or plate be placed so as to present toward the part to be radio- READIXC KADJOGR.IPHS n9
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I40 DENTAL RADIOGRAPHY

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