Comparative histochemical studies on the development of teeth in man and in the mouse

Me, Matthiessen

doi:10.1159/000143112

Cited by 19 publications

(1 citation statement)

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“…-PGs have been of interest to dental researchers ever since the Swedish histologist Holmgren (1940) demonstrated conspicuous toluidine blue metachromasia in the dental papilla of the human embryo. Since then, numerous histochemical studies have demonstrated the presence of high concentrations of polyanions, presumably GAGs, in the dental papilla and dental pulp (Wislocki and Sognnaes, 1950;Fullmer and AIpher, 1958;Quintarelli and Dellovo, 1963;Fiore-Donnoand Baume, 1966;Martens, 1968;Matthiessen, 1968;Mowry, 1968;Ten Cate, 1968;Lennox and Provenza, 1970).…”

Section: Proteoglycansmentioning

confidence: 99%

Session II: Cells and Extracellular Matrices of the Dental Pulp — C.T. Hanks, Chairman

Linde

1985

J Dent Res

105

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The dental pulp is a loose connective tissue, characterized by its specific anatomical location. Its extracellular components are obvious subjects for study, since such components are largely responsible for the physiological properties of the tissue. Several clinically important processes occur extracellularly, e.g., defense mechanisms such as inflammatory reactions and formation of calcified tissue. The dental mesenchyme has a crucial role during early tooth morphogenesis. The dental pulp, or rather the dental papilla, seems to have only an indirect role during dentinogenesis. This review discusses proteoglycans and glycosaminoglycans, fibronectin and other non-collagenous proteins, and the different types of collagen that have been studied in pulp connective tissue. With regard to its biochemical constituents, the pulp is similar to other loose connective tissues. Collagen type I is the major fibrous component, but collagen type III also constitutes a large portion. Fibronectin is present, as is a high content of proteoglycan. In the proteoglycans, all normally occurring connective tissue glycosaminoglycans can be demonstrated. The composition of the pulpal extracellular matrix during tooth development is quite different from that of the mature tooth. Thus, it is important not to draw any too-far-reaching conclusions about the situation in human pulp from results obtained by studying pulp from animal teeth with ongoing dentinogenesis. In spite of their common ancestry, pulp and dentin differ considerably in extracellular matrix composition. Proteoglycans and collagen type I are present in dentin. No type III collagen or fibronectin can be found in the dentin, although it is present in the dental pulp.(ABSTRACT TRUNCATED AT 250 WORDS)

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Section: Proteoglycansmentioning

confidence: 99%

Session II: Cells and Extracellular Matrices of the Dental Pulp — C.T. Hanks, Chairman

Linde

1985

J Dent Res

105

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Skeletal maturation of the human fetus assessed radiographically on the basis of ossification sequences in the hand and foot

Kjar¹

1974

American J Phys Anthropol

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In studies of postnatal human development the skeletal maturation of the hand has been found to be a better indicator of general physical maturation than attained body height. For assessment of prenatal human development the Crown‐rump length (CRL) has so far been the most commonly used measure. The object of the present study is to examine the possibility of also using the skeletal maturation of the hand as a maturity indicator in fetal development. The study is based upon a radiographic and histochemical investigation of 169 human fetuses. On the basis of counting silver‐impregnated diaphyses on radiographs of the hand and foot a maturity indicator (CNO = Composite Number of Ossified bones in hand and foot) was established. Owing to the marked regularity of the recorded ossification pattern, the CNO parameter can be used for evaluating fetal maturation during the early half of the prenatal period. To supplement the assessment of skeletal maturation during the later stages of development, a classification based on the shape of some bones was included in the study. In many cases fetuses of the same size (CRL) exhibited different stages of skeletal maturation (CNO). In accordance with findings from assessment of postnatal development, a more accurate evaluation of fetal development is obtained by combining the size parameter CRL with an assessment of fetal skeletal maturation, CNO.

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Mucopolysaccharides in odontogenesis

Lennox

Provenza

1970

Histochemie

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Comparative histochemical studies on the development of teeth in man and in the mouse

Cited by 19 publications

References 0 publications

Session II: Cells and Extracellular Matrices of the Dental Pulp — C.T. Hanks, Chairman

Session II: Cells and Extracellular Matrices of the Dental Pulp — C.T. Hanks, Chairman

Skeletal maturation of the human fetus assessed radiographically on the basis of ossification sequences in the hand and foot

Mucopolysaccharides in odontogenesis

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