The structure and function of the cemento-dentinal junction in human teeth

Citation
T. Yamamoto et al., The structure and function of the cemento-dentinal junction in human teeth, J PERIOD RE, 34(5), 1999, pp. 261-268
Citations number
36
Language
INGLESE
art.tipo
Article
Categorie Soggetti
da verificare
Journal title
JOURNAL OF PERIODONTAL RESEARCH
ISSN journal
0022-3484 → ACNP
Volume
34
Issue
5
Year of publication
1999
Pages
261 - 268
Database
ISI
SICI code
0022-3484(199907)34:5<261:TSAFOT>2.0.ZU;2-K
Abstract
The structure and function of the cemento-dentinal junction were studied in human molars by light and electron microscopy. The cemento-dentinal juncti on was an approximately 1-3-mu m-thick layer full of proteoglycans with muc opolysaccharides but containing fewer collagen fibrils than the root dentin and cementum. In places, cemental fibrils crossed the cemento-dentinal jun ction. These fibrils appeared to intermingle with dentinal fibrils. By enzy matic treatment of decalcified specimen with hyaluronidase and trypsin, the cemento-dentinal junction decreased or lost staining affinity to toluidine blue. Prolonged treatment caused the separation of cementum from the root dentin during routine histological processes. These data suggest that the a dhesion of proteoglycans is more important than the intermingling of dentin al and cemental fibrils for the cemento-dentinal attachment.