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窩洞形成直後の歯髄反応に関する電子顕微鏡的研究特に象牙細管内への各種細胞の移動について
https://mdu.repo.nii.ac.jp/records/53
https://mdu.repo.nii.ac.jp/records/533e142de4-b7af-45ac-a6b7-369eb3e15cce
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
matsumoto_shigaku_02-02-02.pdf (8.8 MB)
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| Item type | Journal Article(1) | |||||||
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| 公開日 | 2012-04-27 | |||||||
| タイトル | ||||||||
| タイトル | 窩洞形成直後の歯髄反応に関する電子顕微鏡的研究特に象牙細管内への各種細胞の移動について | |||||||
| 言語 | ||||||||
| 言語 | jpn | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | journal article | |||||||
| その他（別言語等）のタイトル | ||||||||
| その他のタイトル | Electron-microscopy on the Immediate Pulpal Response to Cavity Preparation, Especially on the Movement of Cells into the Dentinal Tubules | |||||||
| 著者 |
斉藤, 利夫
× 斉藤, 利夫
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | The purpose of this communication is to observe the cells moved into the dentinal tubles due to cavity preparation under electron-microscopy. Using 18 dog's teeth, the Class V cavities were prepared by means of air turbin with a diamond point or a tungsten carbide bur without water cooling, and the pulp reactions, especially the cells in the dentinal tubules, were observed electron-microscopically just after the procedures. In oder to get good fixation, the new local-perfusion method from arteria carotis communis, invented by Yoshida, et al. (1974), was applied in this experiment. After the fixation newly preparations of 6 cavities were carried out by the same procedures for the control. The results were as follows; 1. The rod-shaped bodies in the dentinal tubules were found in 13 out of 18 teeth (72%) under ordinary microscopy in the 1μ sections stained with toluidine blue or Paragon stain. 2. Electron-microscopy revealed that the rod-shaped bodies coud be divided into three types of cells; odontoblast nuclei, neutrophilic leukocytes and erythrocytes, according to their origins. 3. The main bulk of the rod-shaped bodies in this experiment, meaning appeared just after the cavity preparation, had resulted chiefly (12 out of 13 cases) from odontoblast nuclei, and partly from neutrophilic leukocytes and erythrocytes (1 out of 13 cases). 4. It shoud be noticed that the movement of neutrophilic leukocytes into the dentinal tubules had occurred even in this experiment. This fact may suggest that neutrophilic leukocytes can respond immediately to the irritation. 5. Not only odontoblast nuclei but also the cytoplasmic organelles, such as mitochondrias, rough endoplasmic reticulum and free ribosomes, were also displaced into the dentinal tubules. 6. The weaving of dentinal fiberes in the tubules may not come from the shrinking of dentinal fibers, meaning direct-biological phenomenon, but from the result of movement of odontoblast nuclei, meaning indirect-mechanical phenomenon. 7. The nerve fibers moved into a dentinal tubule were observed in a case. 8. In the control, the odontoblast unclei also moved into the dentinal tubules. Regarding the fact it was considered that the fixation did not yet complete and the outward movement of the tubule contents was occurred due to cavity preparation. 9. Based upon the above mentioned findings the mechanism of the cellular movement was supposed that chiefly rising of intrapulpal pressure by an inflammatory response and partly the outward movement of the tubule contents due to heat or reduced pressure might be causes. Only the leukocytes could migrate themselves for the defence to irritation. 10. In the reviewing the Japanese literatures, it was found that the displacements of odontoblasts and erythrocytes into the dentinal tubules in the pulpitis specimens were first descrived by I. Ono in 1940, and that the migration of wandering cells into the dentinal tubules was observed in the pulpitis by T. Ono in 1917. In addition these, rod-shaped bodies came from fragments of dentinal fibers in the caries dentin were documented by Hanazawa in 1919. | |||||||
| 書誌情報 |
松本歯学 巻 2, 号 2, p. 92-121, 発行日 1976-12-31 |
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| 出版者 | ||||||||
| 出版者 | 松本歯科大学学会 | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0385-1613 | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AN00232590 | |||||||
| フォーマット | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | application/pdf | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
