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  • Dentine structure  (1)
  • Urodela-Anura  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 108 (1970), S. 597-600 
    ISSN: 1432-0878
    Keywords: Dentine structure ; Human incisors ; Polarizing microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Die Struktur des Dentins menschlicher Schneidezähne wird am Tangentialschliff — also in Flächenansicht der Zahnbeinlamellen und bei quergetroffenen Kanälchen — untersucht, insbesondere nach lokaler Beseitigung des Kollagens durch vorsichtiges Auskochen des Schliffes in Glycerinkalilauge. So lassen sich im gewöhnlichen und im Polarisationsmikroskop vorführen: der gekreuzte Verlauf der Kollagenfibrilen in benachbarten Dentinlamellen und weiter die Differenzierung des Zahnbeins in tubulares und intertubulares Dentin, deren letztes zeitlich vor dem ersten sein Kollagen verliert.
    Notes: Summary The dentine structure of human incisors was studied using polarized and nonpolarized light. The sections were ground tangentially thus exposing the faces of the dentine lamellae and cutting through the canaliculi transversally. Cautious boiling of the ground sections in a glycerin-potassium hydroxyde solution caused a partial removal of the collagen. The preparations clearly show the crossed pathways of the collagen fibres in the dentine lamellae and the differentiation of the tubular and intertubular dentine. The collagen was shown to be first from the intertubular dentine.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 104 (1970), S. 295-300 
    ISSN: 1432-0878
    Keywords: Enamel structure ; Birefringence ; Bicuspid teeth ; Urodela-Anura
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Anhand der Retzius-Streifen und der Doppelbrechung wird bei urodelen (Megalobatrachus japonicus) und anuren (Rana catesbyana) Amphibien die Anwesenheit von Zahnschmelz nachgewiesen; er überzieht als zusammenhängende Kappe den distalen Abschnitt des zweispitzigen Zahnes.
    Notes: Summary The presence of enamel on urodele (Megalobatrachus japonicus) and anuran (Rana catesbyana) teeth has been shown by birefringence and the identification of the stripes (lines) of Retzius. The enamel forms a continuous cap on the distal part of the bicuspid teeth.
    Type of Medium: Electronic Resource
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