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Published on: November 13, 2013
Collagen analysis in human tooth germ papillae
Ivete Jorge Abrahão1, Manoela Domingues Martins, Emílio Katayama
1Department of Endodontics, School of Dentistry, University of São Paulo, São Paulo, SP, Brazil.
Brazilian Dental Journal
|January 31, 2007
Summary
This study found type III collagen is consistently present in human tooth germ papillae during development. Type I collagen, however, appears in limited areas, indicating its lesser role in early tooth development.
Area of Science:
- Developmental Biology
- Oral Biology
- Histology
Background:
- The extracellular matrix (ECM) is crucial for tissue development and organization.
- Collagen is the primary organic component of the dental pulp ECM.
- Understanding collagen composition is key to comprehending tooth germ development.
Purpose of the Study:
- To analyze collagen types in the dental papilla of human tooth germs.
- To investigate collagen distribution across different developmental stages (cap, early bell, late bell).
Main Methods:
- Histological analysis of human tooth germs from fetuses (10-22 weeks).
- Staining techniques including hematoxylin-eosin, Masson's Trichrome, and picrosirius.
- Polarized light microscopy for collagen visualization.
Main Results:
- Type III collagen was detected in all analyzed human tooth germ papillae.
- Type I collagen was found focally in some specimens, indicating a lower abundance.
- Picrosirius staining under polarized light microscopy was effective for collagen detection.
Conclusions:
- Type III collagen is a regular component of developing human tooth germ papillae.
- Type I collagen is present in significantly lesser amounts compared to type III collagen.
- Collagen composition changes during tooth germ development.
