Purpose: The purpose of this in vitro study was to investigate the capability of different Ni-Ti instruments in disinfecting root canals previously infected with E. faecalis. Methods: 60 single-rooted, freshly extracted teeth were selected, sterilized and inoculated with cells of E. faecalis strain. All root canals were shaped with different Ni-Ti instruments (MTwo, Revo-S, Reciproc, and One Shape) under irrigation with NaOCl and 17% EDTA solutions by the same trained operator. The number of Colony Forming Units (CFU)/ml of E. faecalis was evaluated for each group. Numeric data were submitted to statistical analysis. Results: MTwo, REVO-S, Reciproc and One Shape reported significantly lower CFU/ml values and showed no significant differences among them (p>0.05). All groups showed significantly higher CFU/ml values than not treated samples (negative control). Conclusions: All the Ni-Ti instrumentation efficiently reduced E. faecalis counts and no significant differences were found among them. Single-use files can offer antibacterial results comparable with traditional instruments.
Alberto, D., Carla Renata, A., Livia, V., Laura, S., Marco, C., Bianchi, S., et al. (2012). Antibacterial efficacy of conventional and single-use Ni-Ti endodontic instruments: an in vitro microbiological evaluation. INTERNATIONAL JOURNAL OF ARTIFICIAL ORGANS, 35(10), 826-831 [10.5301/ijao.5000160].
Antibacterial efficacy of conventional and single-use Ni-Ti endodontic instruments: an in vitro microbiological evaluation
BIANCHI, STEFANO;
2012-01-01
Abstract
Purpose: The purpose of this in vitro study was to investigate the capability of different Ni-Ti instruments in disinfecting root canals previously infected with E. faecalis. Methods: 60 single-rooted, freshly extracted teeth were selected, sterilized and inoculated with cells of E. faecalis strain. All root canals were shaped with different Ni-Ti instruments (MTwo, Revo-S, Reciproc, and One Shape) under irrigation with NaOCl and 17% EDTA solutions by the same trained operator. The number of Colony Forming Units (CFU)/ml of E. faecalis was evaluated for each group. Numeric data were submitted to statistical analysis. Results: MTwo, REVO-S, Reciproc and One Shape reported significantly lower CFU/ml values and showed no significant differences among them (p>0.05). All groups showed significantly higher CFU/ml values than not treated samples (negative control). Conclusions: All the Ni-Ti instrumentation efficiently reduced E. faecalis counts and no significant differences were found among them. Single-use files can offer antibacterial results comparable with traditional instruments.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
