Influence of ultrasonic activation using different final irrigants on antimicrobial activity, smear layer removal and bond strength of filling material

Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc
Matheus Albino SouzaLuciana Grazziotin Rossato-Grando

Abstract

The aim of this study was to evaluate the influence of ultrasonic activation (US) over final irrigants on antimicrobial activity, smear layer removal and bond strength. The root canals of 180 extracted human teeth were distributed into three experimental tests (n = 60). In each test, the samples were subdivided into six groups (n = 10) according to final irrigation protocols: G1:distilled water (DW); G2:DW + US; G3:17% EDTA; G4:QMix; G5:17% EDTA + US; and G6:QMix + US. The antimicrobial activity was evaluated by counting of colony-forming units (CFUs), the smear layer removal by scanning electron microscopy and the bond strength by push-out test. Statistical analysis was performed for each evaluation (α = 5%). Groups 4 and 6 provided higher bacterial reduction, groups 5 and 6 provided higher smear layer removal, groups 3, 4, 5 and 6 provided the higher bond strength (P < 0.05). US activation did not improve the antimicrobial activity and the bond strength, whereas it improved the smear layer removal.

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Citations

Jun 3, 2020·Restorative Dentistry & Endodontics·Benjamin Syek Hur LimVenkateshbabu Nagendrababu
Jun 27, 2020·Scientific Reports·Felipe de Souza MatosMarcia Carneiro Valera
Aug 26, 2020·Restorative Dentistry & Endodontics·Margaret Soo Yee ChiaIsabel Cristina Celerino de Moraes Porto
Mar 9, 2021·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Matheus A SouzaDoglas Cecchin

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