对白鼬额外牙齿的牙髓分支轴突的研究。

A study of branched pulpal axons in ferrets with supplemental teeth.

作者信息

Foster E, Robinson P P

机构信息

Department of Biomedical Science, University of Sheffield, England.

出版信息

Arch Oral Biol. 1994 Nov;39(11):1003-5. doi: 10.1016/0003-9969(94)90087-6.

DOI:10.1016/0003-9969(94)90087-6

PMID:7695503

Abstract

Electrophysiological recordings were made from maxillary incisors to determine whether axons which branch to supply the pulps of two teeth were more common if a supplemental tooth was present. A total of 12 branched pulpal axons was found in nine animals with six maxillary incisors each and 25 branched pulpal axons were found in six animals with seven maxillary incisors each. Because of the variability between animals, this difference was not significant. However, branched pulpal fibres which crossed the midline were found only in animals with supplemental teeth.

摘要

对上颌切牙进行电生理记录，以确定如果存在额外牙齿，分支供应两颗牙齿牙髓的轴突是否更常见。在每组有六颗上颌切牙的九只动物中，共发现12条分支牙髓轴突；在每组有七颗上颌切牙的六只动物中，共发现25条分支牙髓轴突。由于动物之间存在变异性，这种差异并不显著。然而，仅在有额外牙齿的动物中发现了穿过中线的分支牙髓纤维。