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Distribution of Active Plate Forces by Electrical Resistance Strain Gauge Transducers

Mladen Šlaj ; Zavod za ortodonciju Stomatološki fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Andrej Meniga ; Zavod za dječju i preventivnu stomatologiju, Stomatološki fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Darije Plančak ; Zavod za parodontologiju Stomatološkog fakulteta u Zagrebu, Zagreb, Hrvatska


Puni tekst: hrvatski pdf 9.797 Kb

str. 109-116

preuzimanja: 310

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Sažetak

Distribution o f forces on two active plate modifications, i.e. with symmetrically and asymmetrically built-in extensor for transversal extension, was experimentally analyzed. Besides the size o f forces exerted by the device, dependence o f the force magnitude on the anchorage, i.e. on the way o f the screw insertion and acrylate cut, was also determined. Theoretical analysis o f the device showed that greater force should be expected on the side with lower total active surface. This hypothesis was also proven by measurement results.A substantially greater force o f about 10 N was recorded on the side where the screw was shifted, whereas a force o f only 6.5 N was registered on the other side. The forces recorded on a symmetrically
cut plate were almost identical on the two sides. A t the beginning o f measurements, values o f about 8 N were bilaterally registered and thereafter observed to decline to about 5 N.

Ključne riječi

orthodontic forces, strain gauge transducers

Hrčak ID:

100659

URI

https://hrcak.srce.hr/100659

Podaci na drugim jezicima: hrvatski

Posjeta: 584 *