Radiological Study on Internal Conditions of Radiopaque Lesions in the Jaw Bones: Second Report: Frequency of Pearl Shell Structure

• ARAKI Masao

  Departments of Radiology, Nihon University School of Dentistry Division of Advanced Dental Treatment, Dental Research Center Nihon University School of Dentistry

• HASHIMOTO Koji

  Departments of Radiology, Nihon University School of Dentistry Division of Advanced Dental Treatment, Dental Research Center Nihon University School of Dentistry

• MATSUMOTO Kunihito

  Departments of Radiology, Nihon University School of Dentistry

• SHINODA Koji

  Departments of Radiology, Nihon University School of Dentistry Division of Advanced Dental Treatment, Dental Research Center Nihon University School of Dentistry

• KOMIYAMA Kazuo

  Department of Pathology Nihon University School of Dentistry Devision of Bio-defence, Dental Research Center, Nihon University School of Dentistry

Bibliographic Information

Other Title

• 顎骨にみられた不透過性病変の内部性状に関する研究　　第２報　　Ｐｅａｒｌ　ｓｈｅｌｌ構造の出現頻度
• Second Report: Frequency of Pearl Shell Structure
• 第2報 Pearl shell構造の出現頻度

Abstract

Recently, patients with radiopaque lesions in the jaw bones are sometimes referred to the Hospital of Nihon University School of Dentistry for diagnosis. After examination by rotational panoramic radiography, limited cone beam X-ray CT (dental CT) is usually applied to clarify the internal conditions of radiopaque lesions. This procedure often reveals pearl shell structure (PSS) in the radiopaque lesions. The purpose of this study was to clarify the diagnostic relevance of PSS through the relation between the tooth and the origin of this structure.<br>We analyzed 100 radiopaque lesions revealed by rotational panoramic radiography and found that PSS most frequently arose in the premolar and molar regions of the mandible. Regarding the site, 60% of lesions were in contact with the root of a tooth, but 24% were localized in the body of the mandible. We found PSS in 34% of all lesions and these were localized at a higher frequency fully enclosed within the roots of teeth than in contact with them.<br>We show in this study that the PSS in some radiopaque lesions was diagnosed as condensing osteomyelitis histopathologically. Moreover we must follow up PSS to clarify under both conditions, indicating that it is either the starting point of bone sclerosis due to inframmation or the center of increasing bone sclerosis for a long periods.

Journal

• Shika Hoshasen

  Shika Hoshasen 44 (1), 16-23, 2004

  Japanese Society for Oral and Maxillofacial Radiology

Keywords

• Limited cone beam X-ray CT for dental use
• Panoramic radiograph
• Radiopaque lesion
• Internal condition

Details

• CRID: 1390001204962939392
• NII Article ID: 130003753876
• NII Article ID: 10018080293
• NII Book ID: AN00101479
• DOI: 10.11242/dentalradiology1960.44.16
• ISSN: 21856311
• ISSN: 03899705
• Web Site: https://search.jamas.or.jp/link/ui/2004212275
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed