General Histology and Cytology
Fate of odontoblasts and blood capillaries in the incisal region of the rat incisor pulp
Article first published online: 26 JAN 2005
Copyright © 1993 Wiley-Liss, Inc.
The Anatomical Record
Volume 235, Issue 1, pages 12–20, January 1993
How to Cite
Tabata, S., Wada, K. and Semba, T. (1993), Fate of odontoblasts and blood capillaries in the incisal region of the rat incisor pulp. Anat. Rec., 235: 12–20. doi: 10.1002/ar.1092350103
- Issue published online: 26 JAN 2005
- Article first published online: 26 JAN 2005
- Manuscript Accepted: 29 MAY 1992
- Manuscript Received: 16 JAN 1992
- Rat incisor pulp;
- Blood capillary;
- Polymorphonuclear neutrophil
Transmission electron microscopy of thin sections of the rat incisor pulp revealed that in the middle region of the incisor there were fenestrated capillaries in the “predentinal plexus” and that this region contained the tallest odontoblasts. The odontoblasts gradually became shortened in the incisal part of this region: the fenestrated capillaries in the predentinal plexus changed to continuous type capillaries. Almost all the odontoblasts had degenerated near the incisal end of the tooth. The predentinal plexus disappeared in this region, but the “subodontoblastic capillary plexus” persisted. In a specific region just beneath the worn incisal end, numerous macrophages and polymorphonuclear neutrophils appeared and scavenged the degenerating cells, possibly including the odontoblasts. © 1993 Wiley-Liss, Inc.