DEVELOPMENTAL PATTERN OF THE CHILD AS REFLECTED IN THE CALCIFICATION PATTERN OF THE TEETH
DEVELOPMENTAL PATTERN OF THE CHILD AS REFLECTED IN THE CALCIFICATION PATTERN OF THE TEETH
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牙齿钙化模式反映的儿童发育模式
DOI：
10.1001/archpedi.1941.02000130042004
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发表时间：
1941
期刊：
影响因子：
26.1
通讯作者：
H. G. Poncher
中科院分区：
文献类型：
--
作者：
M. Massler;I. Schour;H. G. Poncher
本研究的目的是研究儿童发育的不同阶段对釉质和牙本质的质量和钙化程度的影响，并描述这些结构内记录的变化所揭示的发育时期的特征。一般考虑因素牙齿生长的模式。牙齿的硬组织，牙釉质和牙本质，是通过在旧的物质上形成一层新的物质而生长的（图1）。这种活性被称为并置生长或累加生长，与增殖生长或倍增生长不同。前者是细胞分泌的结果;后者是细胞分裂的结果。并置型的生长导致形成同心层，或环，并在树干很好地说明。树皮下的形成层类似于形成层
The purpose of this investigation was to study the effect of the different stages in the development of the child on the quality and the degree of calcification of the enamel and the dentili and to describe the characteristics of the developmental periods as revealed by the changes recorded within these structures. GENERAL CONSIDERATIONS Mode of Tooth Growth .—The hard tissues of the teeth, the enamel and the dentin, grow by the formation of a layer of new substance on the old (fig. 1). Such activity is termed appositional, or additive, growth, as distinguished from proliferative, or multiplicative, growth. The former is the result of cellular secretion; the latter is the result of cellular division. The appositional type of growth results in the formation of concentric layers, or rings, and is well illustrated in the trunk of the tree. The cambium, under the bark, is analogous to the formative layers