Laser-activated irrigation within root canals: cleaning efficacy and flow visualization

Groot de, S.D. and Verhaagen, B. and Versluis, M. and Wu, M.-K. and Wesselink, P.R. and Sluis van der, L.W.M. (2009) Laser-activated irrigation within root canals: cleaning efficacy and flow visualization. International Endodontic Journal, 42 (12). pp. 1077-1083. ISSN 0143-2885

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Abstract:	Aim: To test ex vivo the efficiency of laser-activated irrigation in removing dentine debris from the apical part of the root canal and to visualize in vitro the fluid dynamics during the activation of the irrigant by laser, using high-speed imaging at a relevant timescale. - Methodology: Root canals with a standardized groove in one canal wall filled with dentine debris were irrigated with syringe irrigation, ultrasonically or laser-activated irrigation (LAI) using 2% sodium hypochlorite as irrigant. The quantity of dentine debris after irrigation was determined. Visualization of the fluid dynamics during activation was achieved using a high-speed camera and a glass model. - Results: Laser-activated irrigation was significantly more effective in removing dentine debris from the apical part of the root canal than passive ultrasonic irrigation or hand irrigation when the irrigant was activated for 20 s. - Conclusions: The in vitro recordings suggest that streaming, caused by the collapse of the laser-induced bubble, is the main cleaning mechanism of LAI.
Item Type:	Article
Copyright:	© 2009 Wiley
Faculty:	Science and Technology (TNW)
Research Group:	Physics of Fluids (POF)
Link to this item:	http://purl.utwente.nl/publications/72593
Official URL:	http://dx.doi.org/10.1111/j.1365-2591.2009.01634.x
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