Studies on dentin

Moss, Melvin L.

doi:10.1159/000144198

Cited by 23 publications

(7 citation statements)

References 5 publications

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“…The dentinal tubules in mantle dentin are also reported to be sparse (18). In mantle, secondary, and DI dentins, a number of coarse bundles of collagen libers oriented prependicularly to the dentin surface are observed (17,(19)(20)(21). Circumpulpal dentin mainly contains fine collagen fibrils arranged parallel to the dentin surface (22).…”

Section: Discussionmentioning

confidence: 99%

Histological distribution of phosphophoryn in normal and pathological human dentins

Takagi

Sasaki

1986

J Oral Pathology Medicine

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Dentin phosphophoryn is a highly phosphorylated protein which has a hydrophilic character but is not soluble in dilute acetic acid. A histochemical method was developed for staining this protein with Stains‐all® in situ utilizing those chemical properties. We have succeeded in detecting the presence of this protein in circumpulpal orthodentin of human permanent and deciduous teeth, but not in mantle dentin, secondary dentin and reparative dentin. Phosphophoryn staining was also absent in the dentin of dentinogenesis imperfecta (DI) Type II, a genetic disorder of dentin formation. From these results, it is suggested that phosphophoryn is synthesized and secreted only by physiologically‐differentiated odontoblasts and that the mineralization processes of mantle, secondary, reparative and DI dentins may be different from that of circumpulpal orthodentin.

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Section: Discussionmentioning

confidence: 99%

Histological distribution of phosphophoryn in normal and pathological human dentins

Takagi

Sasaki

1986

J Oral Pathology Medicine

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“…This layer is about 50 p,m thick. A fuller discussion of dentin terminology is found in the works of Schmid{ and Keil [69] and Moss [70]. z As a first estimate, the uncertainty of a single measurement /--with the probe is • V n where n = the count rate of the instrument.…”

Section: Electron Microprobe Analysesmentioning

confidence: 99%

Rhythmic dentinogenesis in the rabbit incisor: Circadian, ultradian, and infradian periods

Rosenberg

Simmons

1980

Calcif Tissue Int

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Summary.We have identified a variety of biological rhythms involved in the apposition and mineralization of dentin in the rabbit incisor.Animals were injected during the day or night with lead acetate at 2-week intervals--to provide biological time markers in forming dentin--and transverse undecalcified sections of the lower incisors were prepared for electron microprobe analysis. The positions of the lead markers were identified, and the continuous distribution of calcium and sulfur was measured at 1 /xm intervals between the markers. In thin sections stained with hematoxylin after decalcification, the widths of a series of structural increments (bands) were measured with an ocular micrometer.Fourier analysis of the data revealed spectra of structural and compositional rhythms with a range of periodicities which extended from a matter of hours [ultradian (< 24 h)] to days [infradian (> 24 h) and circadian (approximately 24 h)].The structural and compositional rhythms appeared to be independent to the extent that they did not necessarily have the same periods, or amplitudes. Nor were there simple phase relationships between all of the rhythms. At some times, Ca and S fluctuations are inversely proportional (180 ~ out of phase), but in other cases they are directly proportional or out of phase by varying degrees other than 180 ~ . The analyses thus suggest that calcium and sulfur deposition (representing mineral and glycosaminoglycan deposition, respectively) are not simply inversely proportional, and that the hematoxylin-stained structural increments did not solely reflect differences in the distribution of the mineral components in dentin.Send ofll)rint requests to Dr. Gary D. Rosenberg, at the above address

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“…1983] (see also review by Moss [1974]). From the study of sections of tooth germs previously bulk-impregnated with silver.…”

Section: Introductionmentioning

confidence: 99%

Early Dentinogenesis in Mice: von Korff Fibres and Their Possible Significance

Wigglesworth¹,

Longmore²,

Kuc³

et al. 1986

Cells Tissues Organs

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By light and electron microscopy we have confirmed the collagenous nature of von Korff fibres in early dentinogenesis in mice. Each fibre array begins as an argyrophil ‘stem’ lying between the outermost cells of the dental papilla, with finer divisions passing into the papilla. With the appearance of odontoblasts, a cone-like ‘spray’ of non-argyrophil fibres in continuity with the stem spreads peripherally between these cells to the dental epithelial basement membrane. After the sprays become immured in dentine matrix, the stems are removed. Later, new stems appear. Sprays are restricted to enamel-bearing parts of teeth. The possible nature and functions of von Korff fibres are discussed.

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Studies on dentin

Cited by 23 publications

References 5 publications

Histological distribution of phosphophoryn in normal and pathological human dentins

Histological distribution of phosphophoryn in normal and pathological human dentins

Rhythmic dentinogenesis in the rabbit incisor: Circadian, ultradian, and infradian periods

Early Dentinogenesis in Mice: von Korff Fibres and Their Possible Significance

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