FATE OF ODONTOBLASTS AND BLOOD CAPILLARIES IN THE INCISAL REGION OF THE RAT INCISOR PULP

被引:16
作者
TABATA, S
WADA, K
SEMBA, T
机构
[1] Department of Oral Anatomy, Kagoshima University Dental School, Kagoshima
来源
ANATOMICAL RECORD | 1993年 / 235卷 / 01期
关键词
RAT INCISOR PULP; ODONTOBLAST; BLOOD CAPILLARY; MACROPHAGE; POLYMORPHONUCLEAR NEUTROPHIL;
D O I
10.1002/ar.1092350103
中图分类号
R602 [外科病理学、解剖学]; R32 [人体形态学];
学科分类号
100101 ;
摘要
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 cap 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.
引用
收藏
页码:12 / 20
页数:9
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