Histochemical study of amelogenesis and dentinogenesis

Sasso, W.S.; Castro, N.M.

doi:10.1016/s0030-4220(57)80032-2

Cited by 18 publications

(3 citation statements)

References 22 publications

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“…In the present study it was not possible to identify with certainty a subodontoblastic layer showing, com pared with the odontoblastic layer and the pulp, an extrem ely high activity of alkaline phosphatase (Sasso and Castro |1957], N uki and Boating 11961], and Ten Cate |1962|).…”

Section: Discussioncontrasting

confidence: 57%

“…For exam ple, a positive reaction in amcloblasts has been dem onstrated by Horowitz [1942], Bevelander andJohnson (1945, 1949 (Engel and Furuta [1942], Gonwri [1943|, Snsso andCastro [1957]) have been unable to establish the presence of this enzyme in the odontoblasts. This was also reported on the basis of a recent study on hum an foetuses by the azo dye technique (Ten Cate [1962]).…”

Section: Discussionmentioning

confidence: 99%

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Enzyme Histochemistry of the Prenatal Development of Human Deciduous Teeth

Me¹

1966

Cells Tissues Organs

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Section: Discussioncontrasting

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Enzyme Histochemistry of the Prenatal Development of Human Deciduous Teeth

Me¹

1966

Cells Tissues Organs

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“…It is generally accepted that this organic matrix precedes the deposition of mineral substances (5,14). The property which permits or induces the deposition of minerals is presumed to depend upon the spatial configuration and the chemical bonding potential of the surface of the organic matrix micelles (1,8,33,35,43,46). Local factors could effect the rate of mineralization (42).…”

Section: Discussionmentioning

confidence: 99%

Failure of Human Saliva to Form Calculus on Rat Molars

Miller

1960

The Journal of Periodontology

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The ultrastructure of the enamel organ related to enamel formation

Elwood

Bernstein

1968

Am. J. Anat.

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The ultrastructure of the cells of the enamel organ related to enamel formation was studied using the lower incisors of adult male rats. In the region of enamel deposition, stratum intermedium cells are stabilized by a system of intercellular bridges and intracellular fibrils. The mitochondria in these cells are positioned toward the extracellular channels through which any direct intercellular exchange between the capillaries and ameloblasts must occur. Tentatively, the mitochondrial arrangement is considered to be related to the movements of electrolytes and water across the capillary-ameloblast interval.In the region of transition, enamel deposition ceases and the ergastoplasm of the ameloblasts is removed, apparently by cytosegresomes, with an accompanying reduction in the height of the ameloblasts. Here, vesicles containing stippled material are infrequent compared to their occurrence in ameloblasts concerned with enamel deposition. Other vesicles, characteristically found in ameloblasts related to maturing enamel, f i s t appear in the transition region and seem to originate from the cell membrane abutting on the enamel.In the region of maturation, cytosomes are common in the Golgi region whereas vesicles and mitochondria predominate in the distal ends of the ameloblasts. The papillary cells contain an unusually large number of mitochondria, elaborate microvilli and vesicles, which suggests that these cells are extremely active, presumably in the movement of materials related to enamel maturation.The changes in structure of the papillary cells, which occur concomitantly with those of the ameloblasts during enamel formation, are indicative of interrelated functional changes and strongly support the concept of ameloblasts and papillary cells acting together as a functional unit.

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Histochemical study of amelogenesis and dentinogenesis

Cited by 18 publications

References 22 publications

Enzyme Histochemistry of the Prenatal Development of Human Deciduous Teeth

Enzyme Histochemistry of the Prenatal Development of Human Deciduous Teeth

Failure of Human Saliva to Form Calculus on Rat Molars

The ultrastructure of the enamel organ related to enamel formation

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