Brito-Júnior M, Faria-E-Silva AL, Camilo CC, Pereira RD, Braga NMA, Sousa-Neto MD. Apical transportation associated with ProTaper Universal F1, F2 and F3 instruments in curved canals prepared by undergraduate students.
J Appl Oral Sci 2014;
22:98-102. [PMID:
24676579 PMCID:
PMC3956400 DOI:
10.1590/1678-775720130464]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 11/26/2013] [Indexed: 11/25/2022] Open
Abstract
Objective
This study evaluated apical transportation associated with ProTaper®
Universal Fl, F2 and F3 rotary files in curved canais prepared by undergraduate
students.
Material and Methods
Twenty mesial roots of mandibular molars with curvatures ranging between 25° and
35° were selected. Mesiobuccal canals were instrumented by twenty students with
the ProTaper® system (Dentsply-Maillefer, Ballaigues, Switzerland)
according to the manufacturer's instructions. Pre-fiaring was performed with Sl
and SX files. A #15 K-file was inserted into the root canal up to the working
length (WL), and an initial digital radiograph was taken in a buccolingual
direction (baseline). Afterwards, the S1, S2, F1, F2, and F3 files were employed
up to the WL. Other radiographies were taken in the same orientation of the
baseline after the use of the Fl, F2, and F3 files, with each file inserted into
the root canal. The radiographic images were overlapped, and the Image J software
was used to measure the distance between the rotary files' ends and the #15
K-file's end, characterizing the apical transportation. Data were analyzed by
Repeated Measure ANOVA and by the SNK post hoc test (P<0.05).
Results
It was verified that file size affected apical transportation significantly
(P<0.001). The F3 file showed higher apical transportation than Fl and F2,
while between these last files there was no difference.
Conclusion
The undergraduate students produced lower apical transportation in curved canals
when they did not use the F3 rotary file.
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