Effectiveness of passive ultrasonic irrigation in improving elimination of smear layer and opening dentinal tubules

• Autores: Sandra Mozo, María Carmen Llena Puy, Nicholetta Chieffi, Leopoldo Forner Navarro, Marco Ferrari
• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 6, Nº. 1 (febrero), 2014, págs. 47-52
• Idioma: inglés
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• Resumen

  • Objective: To compare the ability to eliminate debris and open dentinal tubules of different ultrasound irrigation procedures.

    Study Design: Forty extracted single-rooted human teeth were instrumented with mechanical rotatory instrumentation, and divided into four groups: (n=10) according to the final irrigation technique: group A (control), 2.5% NaOCl irrigation with the Miraject needle and no ultrasonic agitation; group B, passive ultrasonic irrigation (PUI) with 2.5% NaOCl and Irrisafe 20 tips; group C, PUI with 2.5% NaOCl and Irrisafe 25 tips; group D, PUI with 2.5% NaOCl and K 25 tips. The amount of debris and the number of opened dentinal tubules was established by scanning electronic microscope. Data were compared using the Kruskal Wallis test.

    Results: Irrisafe tips (groups B and C) opened up more dentinal tubules and eliminated more debris than conventional irrigation (p<0.05) in the apical third. The middle third shows no significant differences between groups. Irrisafe 25 was more effective than conventional irrigation and K tips (p<0.05) in the coronal third.

    Conclusions: Ultrasonic activation of the irrigation with Irrisafe tips was the most effective procedure for eliminating the debris and opening up dentinal tubules, especially in the apical third.