Developmental Studies on the Three-Dimensional Arrangement of Enamel Prism; Approach on the Crystallographic Aspects.

搪瓷棱柱体三维排列的发展研究

• 批准号: 63480402
• 负责人: WAKITA Minoru
• 金额: $ 1.34万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63480402/
• 关键词: Enamel; Prism; Crystallite arrangement; Tomes' process; Computer; Graphic simulation; Enamel development; シュレーゲル条; レチウス条; 走査電子顕微鏡; アパタイト

The relationship between the shape of the Tomes' process and the arrangement of enamel crystallites was examined by use of the computer graphic simulation technique, especially on the effects of length of crystallites to the arrangement of crystallites in the enamel prism (prism body). This studies aimed to confirm the theoretical bases recently given by Wakita and his coworkers.Present studies revealed that there was limit in the length of crystallites, when they educe on the S-face of the Tomes' process. This limitation was related to the surface structure of S-face of Tomes' process. That is, when the length of crystallite which educes on the given S-face came over the certain aspects, it crosses over the neighboring crystallites. It means that this phenomenon is capable only be on the CRT and it is impossible to be two-dimensionally as well as three-dimensionally in the prism. Because each of crystallites in actual prism have not only its length but also its width and thickness.These cross over between neighboring crystallites is resulted by the close relationship between the condition of the S-face of the Tomes' process on which they educe, and the crystallite length. That is, the crystallites educed on the S-face with small curvature occur cross over with neighboring ones, although their length are shorter than that educed on other area of the same S-surface.

本文用计算机图形模拟技术研究了牙釉质Tomes突的形态与牙釉质微晶排列的关系，特别是微晶长度对牙釉质棱柱（棱柱体）中微晶排列的影响。本文的研究旨在证实Wakita等人最近提出的理论基础，现有的研究表明，在Tomes过程的S面上析出的微晶的长度是有限的。这种局限性与Tomes突S面的表面结构有关。也就是说，当在给定的S面上引出的微晶的长度超过某些方面时，它会穿过相邻的微晶。这意味着这种现象只能在CRT上，而在棱镜中不可能是二维和三维的。因为实际棱柱中的每个微晶不仅有长度，而且有宽度和厚度，相邻微晶之间的交叉是由它们所引出的Tomes过程的S面的状态与微晶长度的密切关系造成的。也就是说，在曲率较小的S面上引出的微晶与相邻的微晶发生交叉，尽管它们的长度比同一S面上其他区域引出的微晶短。

项目成果

Matsuo,S.,Takano,Y.,Wakisaka,S.,Ichikawa,H.,Nishikawa,S.and Akai,M.: "Budding of small vesicles from the rough-surfaced endoplasmic reticulum in secretory ameloblasts of rat molar tooth germs." Anat.Rec.222. 317-322 (1988)

Matsuo，S.，Takano，Y.，Wakisaka，S.，Ichikawa，H.，Nishikawa，S.和Akai，M.：“大鼠磨牙牙胚分泌成釉细胞中粗糙表面内质网的小囊泡的出芽

Ichikawa,S.,Nishikawa,S.,Matsuo,S.,Takano,Y.and Akai,M.: "Coexitstence of vasoactive intestinal polypeptide-and substance P-like immunoreactivities in the tongue of the guinea pig." Neuroscience Letters. 89. 283-285 (1988)

Ichikawa,S.、Nishikawa,S.、Matsuo,S.、Takano,Y.和 Akai,M.：“豚鼠舌头中血管活性肠多肽和 P 物质样免疫反应性的共存。”

Domom,T and M.Wakita: "Three-dimensional reconstruction of the ruffled border of osteoclasts" Arch.Histol.Cytol. 52. 1-13 (1989)

Domom，T 和 M.Wakita：“破骨细胞褶边边界的三维重建”Arch.Histol.Cytol。

Takano, Y.: "A histochemical demonstration of calcium in the maturation stage enamel organ of rat incisors." Arch. Histol. Cytol., 51:241-248, 1988.

Takano, Y.：“大鼠门牙成熟阶段牙釉质器官中钙的组织化学证明。”

脇田稔: エナメル質比較発生懇話会記録. 1. (1989)

Minoru Wakita：搪瓷比较发展会议记录1。（1989）。