STRUCTURE AND DEVELOPMENT OF MARSUPIAL ENAMEL TUBULES
STRUCTURE AND DEVELOPMENT OF MARSUPIAL ENAMEL TUBULES
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DOI：
10.1007/bf00337122
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发表时间：
1967-01-01
期刊：
影响因子：
--
通讯作者：
LESTER, KS
中科院分区：
文献类型：
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作者：
BOYDE, A;LESTER, KS
有袋类动物釉小管的发育和结构已经通过各种显微技术在许多物种中进行了研究。结果表明：1.牙本质小管和釉质小管的脱钙连续性在所有种属中均能被追踪到; 2.牙本质小管脱钙后比周围釉质留下更多的残留物; 3.牙本质小管对脱钙牙中的染料具有渗透性; 4.染料甲基蓝和台盼蓝不能从牙髓或血液中到达釉质小管。5.在扫描电子显微镜照片和断裂釉质的复制品中以及在氩气的复制品中，都很好地证明了小管的管状性质。6.小管位于釉棱柱内。7.在发育中的釉质的电子显微照片中，小管可以被认为是微晶不发育的区域。8.对釉质小管发育的研究表明，没有成釉细胞的特殊特征或第一分泌釉质的性质。
The development and structure of marsupial enamel tubules has been studied in a number of species by a variety of microscopical techniques. The results were as follows.1.The undoubted continuity of dentinal and enamel tubules could he traced in all species examined.2.The tubules leave more residue than the surrounding enamel when decalcified.3.The tubules are permeable to dyes in extracted teeth.4.The dyes methyl blue and trypan blue did not reach the enamel tubules from the pulp or blood-stream inin situadult teeth ofMetachirus nudicaudatus.5.The tubular nature of the tubules is well demonstrated in scanning electron micrographs and replicas of fractured enamel and also in replicas of argon-ion beam erodedMacropusmolar enamel surface.6.The tubules are situated within the enamel prisms.7.The tubules may be recognized in electron micrographs of developing enamel as regions in which crystallites do not develop.8.The study of enamel tubule development revealed no special features of the ameloblasts or of the nature of the first secreted enamel.