File:Elementary and dental radiography (1813) (14777208583).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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s a slight modification only of Fig. 330. Thanks to the work of Dr. C. Edmund Kells, we now know that itis not necessary to have the two films in exactly the same position to makea stereoradiograph like Fig. 348. All that is necessary is to have themoccupy exactly the same plane. Hence no film holder need be used. Thefilm is placed in the mouth as in Figs. 88 and 89. After the two film negatives are made, prints Preparation of ^^^^ ^^ made from them, and these prints mounted on RadiOdrapbS for cardboard to be observed with the hand stereoscope. Study with Stereoscope. Or the negatives themselves may be observed stereo- scopically by mounting them on transparent glass,sticking them in place with binding strips such as are used in passe par-tout work. The distance between the radiographs mounted for stereoscopic ob-servation should be approximately two and one-half inches from a givenpoint in one radiograph to the same point in the other radiograph. Great SllikliOSCOPlC RADIOCKAPIIY .VT
Text Appearing After Image:
Fig. 345. Antero-posterior view of a dry skull. The right sphenoid sinus is filled with lead shot. accuracy in mounting the radiographs for stereoscopic study is notnecessary though preferable. It is always expedient when making dentalEandtnarKs. stereoradiographs to place some landmark, such as an anchor clamp band or a wire, on the teeth. Know-ing then that the screw and nut of the clamp band are on the lingual orbuccal side, as the case may be, or that the wire is twisted on the lingualor labial side, as the case might be, we may determine immediately, when

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