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Brazilian Journal of Oral Sciences
Piracicaba Dental School - UNICAMP
EISSN: 1677-3225
Vol. 10, No. 3, 2011, pp. 221-225
Bioline Code: os11045
Full paper language: English
Document type: Research Article
Document available free of charge

Brazilian Journal of Oral Sciences, Vol. 10, No. 3, 2011, pp. 221-225

 en Ultrasonic irrigation in the removal of smear layer and Enterococcus faecalis check for this species in other resources from root canals
Nóbrega, Letícia Maria Menezes; Gadê-Neto, Cícero Romão; Dametto, Fábio Roberto; de M. Sarmento, Carlos Frederico & de Carvalho, Rejane Andrade

Abstract

Aim: This study evaluated both smear layer removal and reduction of Enterococcus faecalis check for this species in other resources after instrumentation with ultrasonic irrigation.
Methods: Root canals were experimentally inoculated with E. faecalis for 20 days and microbiological samples were collected before and after chemomechanical preparation by using sterilized absorbent paper points. The irrigation solutions used were NaOCl 2.5% and EDTA 17%. In Group 1 (G1), conventional irrigation was used, whereas in Group 2 (G2) ultrasonic irrigation was performed. In group 3 (control), root canals were irrigated with distilled water. The samples were inoculated in BHI broth and turbidity was observed after 48 h to evaluate the reduction in the number of bacteria. Residual smear layer was examined by scanning electron microscopy (SEM).
Results: The results showed no significant differences between ultrasonic and conventional irrigation.
Conclusions: It was concluded that the level of disinfection and cleanliness of root canals achieved with ultrasonic irrigation is comparable to that obtained by conventional methods.

Keywords
E. faecalis, endodontic irrigation, smear layer, ultrasonic

 
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