Shika Hoshasen
Online ISSN : 2185-6311
Print ISSN : 0389-9705
ISSN-L : 0389-9705
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Volume 39, Issue 4
Displaying 1-7 of 7 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    2000 Volume 39 Issue 4 Pages 205-207
    Published: January 31, 2000
    Released on J-STAGE: November 25, 2011
    DOIhttps://doi.org/10.11242/dentalradiology1960.39.205
    JOURNAL FREE ACCESS
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  • Analysis of Cases with the Buccinator and Mandibular Node Metastases
    Yukinori KIMURA, Tomomi HANAZAWA, Tomohiro OKANO
    2000 Volume 39 Issue 4 Pages 208-217
    Published: January 31, 2000
    Released on J-STAGE: November 25, 2011
    DOIhttps://doi.org/10.11242/dentalradiology1960.39.208
    JOURNAL FREE ACCESS
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    The presence of the buccinator and mandibular lymph nodes and their involvement by malignant disease have received limited attention in oral radiology literature. The purpose of this report was to analyze the clinical characteristics and course of Buccinator and mandibular lymph node metastases in patients with oral and maxillary cancers. In our nine years experience, we have radiographically diagnosed five cases of oral and maxillary cancers involving either the Buccinator or mandibular lymph nodes, and one involving both. In addition, we found another eight cases in the Japanese medical literature. Together with the cases we diagnosed, this yielded ten cases with metastases of the buccinator nodes and four cases with metastases of the mandibular nodes. We performed a retrospective analysis of all these cases. With the exception of one patient, the maxillary sinus, the upper gingiva or the buccal mucosa was the primary site of the cancer. As for the buccinator node, four were involved at the first examination, two during of the initial treatment and the remaining four after that. As for the mandibular node, two were involved at the first examination and the other two after the initial treatment. In five of the cases with metastatic buccinator nodes and all of four with mandibular node metastases, cervical node metastases were associated, especially the submandibular node. Among of the 13 patients, five eventually died from metastases originating buccinator or mandibular nodes. This poor prognosis may indicate that metastases of the buccinator and/or mandibular nodes are as important as cervical node metastases. The data presented in this report should be useful to the oral radiologist.
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  • Image Findings and Bone Metabolic Markers of Bone Involvement by Oral Squamous Cell Carcinoma
    Ayako KAMETA, Makoto TSUCHIMOCHI, Mikiko HARADA, Tsutomu KATADA, Yoshi ...
    2000 Volume 39 Issue 4 Pages 218-223
    Published: January 31, 2000
    Released on J-STAGE: November 25, 2011
    DOIhttps://doi.org/10.11242/dentalradiology1960.39.218
    JOURNAL FREE ACCESS
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    Recently it has been reported that the circulating pyridinoline cross-linked carboxyl-terminal telopeptide of type I collagen (ICTP) and carboxyl-terminal propeptide of type I procollagen (PICP) are useful markers for detecting metastasis of malignancies to bone. Since ICTP and PICP are related to collagen metabolism, respectively breaking down and synthesizing type I collagen, elevated blood concentrations of these markers may reflect direct jaw bone destruction by oral cancer. The purpose of this study was to clarify the relationship between serum ICTP and PICP levels and bone invasion associated with oral cancer. Bone invasion was evaluated in 41 patients with oral squamous cell carcinoma (SCC) by panoramic radiography and 99mTc-methylene diphosphonate (MDP) scintigraphy. We also assayed serum levels of parathyroid hormone-related protein (PTHrP) and compared them with concentrations of bone metabolic markers and imaging findings. There was no significant relationship between serum ICTP and PICP levels and bone invasion. However, in three of the five cases that showed remarkably high serum ICTP levels, 99mTc-MDP uptake in the lesion was intensely increased. This suggests that serum ICTP levels may be elevated when bone metabolic changes caused by cancer involving the bone are extensive. We could find no significant correlation among serum levels of ICTP, PICP, and PTHrP. ICTP and PICP do not appear to be good indicators of direct bone invasion by oral SCC in early stages.
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  • Development of the Three Dimensional Image Display Program for Limited Cone Beam X-ray CT for Dental Use (Ortho-CT)
    Yoshinori ARAI, Koji HASHIMOTO, Koji SHIMODA
    2000 Volume 39 Issue 4 Pages 224-229
    Published: January 31, 2000
    Released on J-STAGE: November 25, 2011
    DOIhttps://doi.org/10.11242/dentalradiology1960.39.224
    JOURNAL FREE ACCESS
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    Purpose: We have already developed and reported a limited cone beam X-ray CT system for dental use (Ortho-CT). This system has been used clinically since 1997. In this study, we report a 3D surface display program for Ortho-CT which has been newly-developed by the authors.
    Material and methods: The 3D surface display software has been developed using visual C++ (Microsoft Co. WA. USA) and a personal computer (Pentium 450MHz Intel Co. CA USA, Windows NT 4.0 Microsoft WA. USA). In this software, the 3D surface images are recorded as AVI files and can be displayed on the personal computer. The 3D images can be rotated and a stepwise change of the threshold voxel value for binary image formation can be automatically used. We have applied these 3D surface images to clinical studies from January 1999 to May 1999 at the Radiology section in our Dental hospital.
    Results: The images can be displayed very easily in personal computers using AVI files. 35 cases have been reconstructed using 3D surface images in this way. The 3D surface image is useful in the diagnosis of fractures of the mandibular head and impacted teeth. Only teeth are observed when a relative threshold voxel value is set at a high level such as about 0.37. When the threshold is changed to a lower value (about 0.3), we can observe both teeth and the surface of the bone.
    Conclusion: We have developed a 3D surface display program for personal computers. The images are useful for the diagnosis of the pathosis in the maxillofacial region.
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  • Report of a Case: Multiple Idiopathic Cervical Root Resorption
    Shizuko Kuriwada SATOH, Naoyuki KURIBARA, Yoko IWAMATSU, Machiko MARUM ...
    2000 Volume 39 Issue 4 Pages 230-231
    Published: January 31, 2000
    Released on J-STAGE: November 25, 2011
    DOIhttps://doi.org/10.11242/dentalradiology1960.39.230
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    2000 Volume 39 Issue 4 Pages 232-245
    Published: January 31, 2000
    Released on J-STAGE: November 25, 2011
    DOIhttps://doi.org/10.11242/dentalradiology1960.39.232
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    2000 Volume 39 Issue 4 Pages 251
    Published: January 31, 2000
    Released on J-STAGE: November 25, 2011
    DOIhttps://doi.org/10.11242/dentalradiology1960.39.251
    JOURNAL FREE ACCESS
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