COMPARISON OF 3 INSTRUMENTS IN THE PREPARATION OF CURVED ROOT CANALS

Citation
F. Goldberg et Ja. Araujo, COMPARISON OF 3 INSTRUMENTS IN THE PREPARATION OF CURVED ROOT CANALS, Endodontics & dental traumatology, 13(6), 1997, pp. 265-268
Citations number
15
ISSN journal
01092502
Volume
13
Issue
6
Year of publication
1997
Pages
265 - 268
Database
ISI
SICI code
0109-2502(1997)13:6<265:CO3IIT>2.0.ZU;2-E
Abstract
The transportation produced in the apical and middle areas of 30 mesio buccal root canals of human mandibular molars was evaluated after circ umferential instrumentation using stainless steel K-files (group A), n ickel-titanium K-files (group B), and clockwise/counterclockwise file rotation using Flexogates (group C). The canals were instrumented with files #15 to #35 in size. Apical transportation was assessed radiogra phically while that occurring in the middle area was studied microscop ically in cross-sections. Although apical transportation was greatest in the canals of group A, this difference was not statistically signif icant (P>0.05). With respect to the middle area of the root canal, con siderable transportation was observed in 7 of the 30 instrumented root s. Of these, five belonged to group A and two to group B, a difference which was not statistically significant (P>0.05). The best results fo r transportation in the middle area of the canal were obtained in grou p C, in which no transportation occurred. This difference was signific ant when compared with the transportation observed in group A (P=0.02) but not with that in group B (P>0.05).