Naslov
Sensitivity of the root canal impedance to electrode displacement-in vivo and in vitro measurement

Autori
Stare, Zoran ; Protulipac, Tihomir

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 4th International Conference on Measurement / Frollo, Ivan ; Tyšler, Milan ; Plačkova, Anna - Bratislava : VEDA, Vydavatel'stvo SAV, 2003, 230-233

Skup
Measurement 2003, 4th International Conference on Measurement

Mjesto i datum
Smolenice, Slovačka, 15.06.2003. - 19.06.2003

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
apical foramen location; impedance sensitivity; in vitro measurement

Sažetak
Root canal impedance measurement was carried out in vivo on a series of patients and in vitro on a model (tooth dipped into a saline solution). Impedance was measured for several file tip displacements from apical foramen in the frequency range from 100 Hz to 1 MHz. Comparison between in vivo and in vitro results was performed for the measured value of impedance and for the components (Rp, Cp) of two element parallel equivalent circuit. It has been shown that normalized values obtained on apex have very similar frequency dependence, but the sensitivity to electrode displacement differs great in magnitude and its frequency dependence when measured in vitro from the one obtained in vivo. It is possible to use model-based measurements to draw some conclusions or test apex locator devices if the measurement is conducted on apex, when the file is displaced from apex difference towards in vivo measurement becomes significant.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA