Naslov
Vertical force and torque analysis during mechanical preparation of extracted teeth using hand ProTaper instruments

Autori
Glavičić, Snježana ; Anić, Ivica ; Braut, Alen ; Miletić, Ivana ; Borčić, Josipa

Izvornik
Australian endodontic journal (1329-1947) 37 (2011), 2; 51-55

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
endodontics; instrumentation; root canal preparation; torque

Sažetak
The purpose was to measure and analyze the vertical force and torque developed in the wider and narrower root canals during hand ProTaper instrumentation. Twenty human incisors were divided in two groups. Upper incisors were experimental model for the wide, while the lower incisors for the narrow root canals. Measurements of the force and torque were done by a device constructed for this purpose. Differences between the groups were statistically analyzed by Mann-Whitney U– test with the significance level set to P<0.05. Vertical force in the upper incisors ranged 0.25-2.58N, while in the lower incisors 0.38-6.94N. Measured torque in the upper incisors ranged 0.53-12.03Nmm, while in the lower incisor ranged 0.94-10.0Nmm. Vertical force and torque were higher in the root canals of smaller diameter. The increase in the contact surface results in increase of the vertical force and torque as well in both narrower and wider root canals.

Izvorni jezik
Engleski

Znanstvena područja
Dentalna medicina

POVEZANOST RADA