Panoramic Radiography of the Temporomandibular Joint. Part 2: A Study of Horizontal Optimum Angle of X-ray Beam to Mandibular Condyle.

DOI 3 Citations 12 References
  • TAKEUCHI Toru
    Department of Oral and Maxillofacial Radiology, School of Dentistry, The University of Tokushima
  • TAKAHASHI Akira
    Department of Oral and Maxillofacial Radiology, School of Dentistry, The University of Tokushima
  • SUGAWARA Chieko
    Department of Oral and Maxillofacial Radiology, School of Dentistry, The University of Tokushima
  • SHIMOMURA Manabu
    Department of Oral and Maxillofacial Radiology, School of Dentistry, The University of Tokushima
  • MAEDA Naoki
    Department of Oral and Maxillofacial Radiology, School of Dentistry, The University of Tokushima
  • TADA Akihisa
    Department of Oral and Maxillofacial Radiology, School of Dentistry, The University of Tokushima
  • UEMURA Shusaburo
    Department of Oral and Maxillofacial Radiology, School of Dentistry, The University of Tokushima

Bibliographic Information

Other Title
  • パノラマＸ線撮影装置を利用した顎関節撮影法　第二報　水平方向の至適Ｘ線入射角度の検討
  • Part 2: A Study of Horizontal Optimum Angle of X-ray Beam to Mandibular Condyle
  • 第二報 水平方向の至適X線入射角度の検討

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Description

The horizontal angle of x-ray beam projection to obtain an optimum anterior-oblique view of the mandibular condyle on a panoramic radiogram with least superimposition of the cranial base structures was examined. Eleven left temporomandibular joints from 11 dried human skulls were studied. Thirteen images were obtained for each joint, projected from 8° posterior to 52° anterior in 5° steps. The possible structures superimposing the condyle were the eminence from infratemporal crest to sphenoid spine, the eminence from articular tubercle to sphenoid spine, post glenoid process, anterior wall of the external auditory meatus, and mastoid process. None of the structures except mastoid process caused any problem in tracing the contour of the condyle. The part of the condyle with superimposition of the mastoid process was difficult to interpret, and extent of the part spread gradually as the projection angle increased. Nine out of 11 (82%) condyles were not superimposed with the mastoid process when a 30° anterior projection was adopted. This was considered to be the most suitable angle to obtain an anterior-oblique aspect of the mandibular condyle keeping good visibility.

Journal

  • Shika Hoshasen

    Shika Hoshasen 37 (1), 41-48, 1997

    Japanese Society for Oral and Maxillofacial Radiology

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