Vol 63, No 1 (2004)
Short communication
Published online: 2003-12-03
The effect of direct and alternating electrical currents on the vessel walls of the tooth pulp - TEM studies
Folia Morphol 2004;63(1):137-139.
Abstract
Devices which operate on the basis of electrical charges are increasingly being
used in stomatology, such as in cariology for the detection of invisible caries
lesions or for the measurement of canal lengths during patient treatment. The
majority of these devices now emit a current of alternating frequency. The aim
of the work was to explain how the electrical devices of labile frequency commonly
used in stomatology influence the vessels of the tooth pulp. Teeth extracted
for orthodontic reasons were investigated with the use of a transmission
electron microscope. The teeth were treated with current emitted by a specially
constructed device. The control group comprised 4 teeth. No changes were
found in the electron microscopic studies in the slides of the teeth treated with
low charges of current. However, in the specimen treated with current charges
of 9600 μC or more flattened endotheliocytes were found together with exudation
in the vessel lumen. Cases are referred to in which the duration of the work
was 2 or 3 times longer than normal and in which a current of constant intensity
was emitted uninterruptedly.
Keywords: vesselstooth pulpTEMalternating electrical currenterythrocytes
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