ISSN:
0002-9106
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Medicine
Notes:
Injection studies were made of the blood vessels of developing human teeth, using 114 unfixed aborted fetuses and new-born infants ranging in gestation age from three through nine months. These specimens were injected with India ink-formalin, Micropaque-formalin, Microfil, or vinyl acetate solutions via the umbilical vessels; in cases where an autopsy had been performed, injection was made through the carotid artery. After further fixation by immersion in 10% neutral formalin, the head was bisected in the sagittal plane. One half was dissected and tissue obtained for microscopic study; the other half was radiographed, dissected or dehydrated and cleared. These techniques revealed that the plexus of vessels which surrounds the developing dental organs is derived mainly from the inferior alveolar and palatine arteries, respectively. However, branches from vessels in adjacent tissues also supplied this plexus. The teeth growing most rapidly, and which usually erupt the earliest, receive the largest blood supply.Odontoblasts were supplied by vessels which course through the dental pulp to their deeper surface. The ameloblasts were adjacent to vessels in the capillary plexus on the outer surface of the enamel organ. A venous sinus was located at the base of the dental organ.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/aja.1001310206
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