Showa Shigakkai zasshi = The Journal of Showa University Dental Society最新文献_第6页

Three Dimensional Arrangement of Matrix Fibrils and Tendon Attachment of Mandible 下颌骨基质原纤维的三维排列与肌腱附着

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1996-12-30 DOI: 10.11516/DENTALMEDRES1981.16.377

K. Egawa, N. Nonaka, Takahisa Chiba, Y. Ogura, R. Takiguchi

{"title":"Three Dimensional Arrangement of Matrix Fibrils and Tendon Attachment of Mandible","authors":"K. Egawa, N. Nonaka, Takahisa Chiba, Y. Ogura, R. Takiguchi","doi":"10.11516/DENTALMEDRES1981.16.377","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.16.377","url":null,"abstract":"To examine the three-dimensional arrangement of bone matrix fibrils at their attachment with Sharpey's fibers or muscle tendons, we observed the surface of the body of the mandible, the angle of the mandible, and the coronoid process with a scanning electron microscope. Materials were three male crab-eating macaques (three years old). The fibrous layers of the ectoperiosteum were dissected free. Specimens were incubated in 1% trypsin solution for 72 hours at 37°C to digest both osteoblasts and amorphous organic matrix. At the external and internal surfaces of the body of the mandible, collagen fibril bundles ran horizontally. Spindle-shaped openings were observed between collagen fibril bundles, and we believe that the Sharpey's fibers entered the spindle-shaped openings. At the uneven area of the body of the mandible, collagen fibril bundles crossed each other. Many openings into which tendons of the masseter muscle entered were observed at the external surface of the angle of the mandible. The collagen fibril bundles organizing the surface matrix surrounded the places where the tendons entered. At the external surface of the coronoid process, collagen fibril bundles ran up and down in parallel. Tendons of the temporal muscle entered between collagen fibril bundles.","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"16 1","pages":"377-380"},"PeriodicalIF":0.0,"publicationDate":"1996-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64475004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scanning Electron Microscopy of the Inner Enamel in the Lingual Side of Human Deciduous Teeth Followed by Chromium Sulfate Treatment 人乳牙舌侧内牙釉质的扫描电镜观察及硫酸铬处理

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1996-12-30 DOI: 10.11516/DENTALMEDRES1981.16.337

T. Kodaka, M. Abe, S. Higashi

{"title":"Scanning Electron Microscopy of the Inner Enamel in the Lingual Side of Human Deciduous Teeth Followed by Chromium Sulfate Treatment","authors":"T. Kodaka, M. Abe, S. Higashi","doi":"10.11516/DENTALMEDRES1981.16.337","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.16.337","url":null,"abstract":"The inner enamel of human permanent teeth has been reported to be divided into three zones: I, II, and III. In this study, we observed the inner enamel in the lingual side of deciduous incisor teeth with a scanning electron microscope. All transverse ground sections were treated with chromium sulfate. The about 10-,um-thick innermost enamel consisting of prism-like structures was deeply and almost entirely etched. This zone, which was similar to Zone I in permanent teeth, was suggested to contain a smaller amount of organic material and to show a lower calcification. The inner enamel except for the innermost zone may be divided into Zone II and III, because the prisms in the inner enamel adjacent to the innermost zone, about 30 to 40 ,u m in thickness, contained a larger amount of organic material than the outer-side inner enamel. However, the inner enamel can not be divided into two zones, when the outer-side inner enamel showing an arrangement of Pattern 3 prisms is contained in the middle enamel. Abnormal-shaped prisms were observed in the middle enamel as well as in the inner enamel. The lamella-like stalks of enamel tufts, insoluble with chromium sulfate, ran through the prism bodies surrounded by chromium sulfate-insoluble sheaths for a short or a longer distance towards the enamel surface and then ran together with the prism sheath regions. Many of the tuft stalks appeared discontinuously in the prisms, and some of them had fine branches within prisms. Discontinuous structures of the tuft stalks suggest that the lamella shows a fenestrated membrane.","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"69 1","pages":"337-344"},"PeriodicalIF":0.0,"publicationDate":"1996-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64474928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Abnormal-Shaped Prisms in the Occlusal Enamel of Human Premolar Teeth 人类前磨牙咬合牙釉质异常形状的棱柱

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1996-09-30 DOI: 10.11516/DENTALMEDRES1981.16.204

T. Kodaka, M. Abe, S. Higashi

引用次数: 3

Morphological Comparative Study on Human Enamel and Dentin Lased by Er : YAG, Nd : YAG and CO2 Lasers Er: YAG、Nd: YAG和CO2激光照射人牙本质和牙釉质的形态学比较研究

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1996-06-30 DOI: 10.11516/DENTALMEDRES1981.16.159

Mohammad M. R. Khan, A. Funato, Koukichi Matsumoto

引用次数: 0

Abnormal-Shaped Prisms in the Lingual Enamel of Human Permanent Incisor Teeth 人类恒切牙舌牙釉质异常形状的棱柱

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1996-06-30 DOI: 10.11516/DENTALMEDRES1981.16.113

T. Kodaka, M. Abe, S. Higashi

{"title":"Abnormal-Shaped Prisms in the Lingual Enamel of Human Permanent Incisor Teeth","authors":"T. Kodaka, M. Abe, S. Higashi","doi":"10.11516/DENTALMEDRES1981.16.113","DOIUrl":"https://doi.org/10.11516/DENTALMEDRES1981.16.113","url":null,"abstract":"The tangentially polished surfaces of the outer enamel under the projections of the marginal ridges and the basal tubercle in the lingual side of maxillary incisor teeth, extracted from elderly periodontic patients, were observed by scanning electron microscopy after EDTA etching. In general, EDTA selectively erodes the prism sheath regions; however, our observations reversed this. It indicates that the prism sheath regions may have been penetrated by organic materials with minerals derived from saliva due to an exposure of the old teeth to the oral cavities for a longer duration since eruption and also the attrition for a longer period. The etched surfaces more or less showed a disordered orientation of enamel prisms. At the junctions of such disorders, there were scattered abnormal-shaped prisms including a spiral, a circle, and double borders. Moreover, the 'inner' prism-like sheaths of the double bordered prisms occasionally showed a circle or a dotted remnant other than an arcade, whereas the circular prisms frequently contained an arcade, a spiral, or a smaller circle in the 'outer' sheaths. These abnormal-shaped prisms are probably formed by the prism orientation disorders following the variable morphological changes of Tomes' processes during the formation of their enamel projections.","PeriodicalId":77624,"journal":{"name":"Showa Shigakkai zasshi = The Journal of Showa University Dental Society","volume":"16 1","pages":"113-118"},"PeriodicalIF":0.0,"publicationDate":"1996-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"64474769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Alternative Appearance of Spiral Prisms in the Gnarled Enamel of Human Teeth 螺旋棱柱在人类牙齿多节牙釉质中的替代外观

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1996-03-31 DOI: 10.11516/DENTALMEDRES1981.16.1

T. Kodaka, M. Abe, S. Higashi

引用次数: 3

Incompletely Closed Tomes' Process Pits on the Enamel Surface along the Perikymata 牙釉质表面沿牙外突有不完全闭合的牙釉质突起

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1995-12-31 DOI: 10.11516/DENTALMEDRES1981.15.297

T. Kodaka, S. Higashi

引用次数: 3

Changes in the Expression of Transforming Growth Factor-α and Lewis^y Antigen with the Malignant Transformation of Oral Leukoplakia into Squamous Cell Carcinoma 口腔白斑向鳞状细胞癌转化过程中转化生长因子-α和Lewis^y抗原表达的变化

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1995-12-31 DOI: 10.11516/DENTALMEDRES1981.15.303

Masako Nakamura

引用次数: 1

A Comparative Study on the Marginal Discrepancies of Full Cast Crowns 全铸冠边缘差异的比较研究

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1995-12-31 DOI: 10.11516/DENTALMEDRES1981.15.311

A. Shinya, J. Ohsawa, N. Kobayashi, K. Warita, R. Furuya, T. Kawawa

引用次数: 2

Fine Incremental Lines Observed on the Surface-Overlapping Projections of Human Enamel after EDTA Etching EDTA蚀刻后在人牙釉质表面重叠投影上观察到的细增量线

Showa Shigakkai zasshi = The Journal of Showa University Dental Society Pub Date : 1995-12-31 DOI: 10.11516/DENTALMEDRES1981.15.300

T. Kodaka, S. Higashi

引用次数: 2