Cutting efficiency of endodontic instruments. Part III. Comparison of sonic and ultrasonic instrument systems
1988; Elsevier BV; Volume: 14; Issue: 1 Linguagem: Inglês
10.1016/s0099-2399(88)80237-1
ISSN1878-3554
AutoresLeo J. Miserendino, Catherine A. Miserendino, J.B. Moser, Michael A. Heuer, E.M. Osetek,
Tópico(s)Dental Radiography and Imaging
ResumoThe cutting efficiency of two ultrasonic and two sonic instrumentation devices were compared for their ability to enlarge and prepare standardized models of artificial root canals composed of epoxy resin. Five groups of instruments, sizes 15 to 35, were used sequentially to prepare straight and curved artificial canals by a circumferential filling motion. Ten straight, and 10 curved artificial canals were instrumented for a period of 1.5 min, with each size instrument under constant irrigation at a rate of 20 ml per min. Cutting efficiency was evaluated in terms of the mean weight loss of the specimens following serial preparation for each of the systems tested. Statistical analysis of the data indicated that significant differences in cutting efficiency existed between the groups at α=0.01 level.
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