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The Röntgen rays in medical work (1907) (14757527515)

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The Röntgen rays in medical work (1907) (14757527515)

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Identifier: rntgenraysinmedi1907wals (find matches)
Title: The Röntgen rays in medical work
Year: 1907 (1900s)
Authors: Walsh, David
Subjects: X-rays Radiography X-Rays Radiography
Publisher: New York : William Wood
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School



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y above and partly beneath gum. 8. Upper bicuspid : eccentric distortion of fang. This shape isthe result of pressure of neighbouring teeth in process of develop-ment. Absorption going on in centre of single fang is indicated bythe darker area; that is, the thin plate of tooth substance hasoffered little resistance to the rays. 9. Upper central incisor: half the fang absorbed ; small cariouscavity. This tooth is extremely opaque, shown by its relativewhite look and absence of dental canal tracing, a condition probablydue to its necrosis. 311 312 THE RONTGEN RA YS IN MEDICAL WORK 10. Lower molar, with large amalgam stopping reaching nearlyto apex of fang; that is to say, the filling is nearly all beneath thelevel of the gum. The metal shown by dense white patch. Com-pare this absolute density to the Rontgen rays with that of thepreceding tooth. 11. Permanent upper molar: fangs absorbed by pressure ofwisdom tooth, which was impacted between them. 12. Wisdom tooth : fangs sharply hooked.
Text Appearing After Image:
Fig. 157.—Skiagram of Teeth, showing Various Pathological Conditions. 13. Lower molar, showing convergent fangs and carious crown,rendering extraction difficult. Mr. Frank Harrison published some of the earlier radiograms ofteeth in situ. In the Journal of the British Dental Association forSeptember, 1896, he has an excellent photograph of a portion ofthe lower maxilla of a girl of seven. The milk-teeth with theirpulp-cavities and fangs are clearly visible, while below the rootsof the first and second temporary molars are the permanent first MEDICAL AND SURGICAL APPLICATIONS 313 and second bicuspids, enclosed in their respective bony crypts. Theinternal dental structures of the lower jaw were displayed wellnighas distinctly as would have been done in a dissected specimen. Mr. Harrison observes: The sc-rays promise to be of great use indentistry, and will enable the dentist to observe in living tissueswhat was possible only a short time ago in the dead subject. Thegenesis of the teet

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the rontgen rays in medical work 1907
the rontgen rays in medical work 1907