歯科材料のX線不透過性  [in Japanese] Radiopacity of Dental Materials  [in Japanese]

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Author(s)

    • 松村 英雄 MATSUMURA Hideo
    • 長崎大学歯学部歯科補綴学第一講座 Department of Fixed Prosthodontics,Nagasaki University School of Dentistry
    • 熱田 充 ATSUTA Mitsuru
    • 長崎大学歯学部歯科補綴学第一講座 Department of Fixed Prosthodontics,Nagasaki University School of Dentistry

Abstract

Radiopacity of prosthetic dental materials especially used in the coronal area was determined, and the values were compared with those of enamel and dentin. Radiographs of the 2 mm thick specimens were taken together with tooth slices on aluminum step wedges. Radiographic density of the specimens were measured by means of a densitometer and expressed in terms of the equivalent thickness of aluminum. The results showed that the materials containing metal oxide and metallic compound exhibited high radiopacity values, whereas polymer-based materials with low filler content showed very low radiopacity values. A radiopacity value greater than enamel may be desirable for detection of materials or for their distinction from the tooth structure on the dental radiograph.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 43(3), 499-505, 1999-06-10

    Japan Prosthodontic Society

References:  27

Codes

  • NII Article ID (NAID)
    10008173513
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    03895386
  • Data Source
    CJP  J-STAGE 
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