Development and performance test of a micro bubble irrigation system for root canal cleaning of tooth Sung, Gilhwan; Sung, Jaeyong; Lee, Myeong Ho;
Elimination of the smear layer and bacteria in the root canal is the most important in the endodontic treatment, and various irrigation devices have been developed. Nevertheless, it is hard to eliminate the smear layer and bacteria completely. In this paper, a micro bubble irrigation system has been developed for the root canal cleaning of tooth. Micro bubbles are generated when pressurized fluids passing through a porous material inside a hand-piece nozzle, and the bubbly flows excited by ultrasonic vibration are observed using a high-speed camera and a microscope. The results show that the diameter and number of bubbles increases with the applied pressure, and there found an optimum excitation frequency in order to minimize the bubble size. From in-vitro tests, it is also verified that the developed bubble irrigation system has the ability of antibacterial and infection removal. Thus, this biocompatible system would be well suited for root canal cleaning.
Weller, R. N., Brady, J. M. and Bernier, W. E., 1980, "Efficacy of Ultrasonic Cleaning," J. Endod., Vol.6, pp.740-743.
Schafer, E. and Zapke, K. A., 2000, "Comparative Scanning Electron Microscopic Investigation of the Efficacy of Manual and Automated Instrumentation of Root Canals," J. Endod., Vol. 26, pp.660-664.
Gutarts, R., Nusstein, J., Reader, A. and Beck, M., 2005, "In Vivo Debridement Efficacy of Ultrasonic Irrigation Following Hand-Rotary Instrumentation in Human Mandibular Molars," J. Endod., Vol.31, pp. 166-170.
Ciucchi, B., Khettabi, M. and Holz, J., 1989, "The Effectiveness of Different Endodontic Irrigation Procedures on the Removal of the Smear Layer: A Scanning Electron Microscopic Study," Int. Endod. J., Vol.22, pp.21-28.
Yoo, Y.-J., Shin, S.-J. and Baek, S.-H., 2011, "Review of Root Canal Irrigant Delivery Techniques and Devices," J. Korean Academy of Conservative Dentistry, Vol.36, No.3, pp.180-179.
Ashutosh, A. and Wun, J. N., 2011, "Principle and Applications of Microbubble and Nanobubble Technology for Water Treatment," J. Chemosphere, Vol.84, pp.1175-1180.
Fujikawa, S., Zhang, R., Hayama, S. and Peng, G., 2003, "The Control of Micro-Air-Bubble Generation by a Rotational Porous Plate," J. Multiphase Flow, Vol.29, pp.1221-1236.
Qin, Z., Bremhorst, H., Alehossein, H. and Meyer, T., 2007, "Simulation of Cavitation Bubbles in a Convergent-Divergent Nozzle Water Jet," J. Fluid Mechanics, Vol.573, pp.1-25.
Lee, W. M., Lee, S. H., Sung, J. and Lee, M. H., 2014, "Dynamics Response of a Micro Bubble under Temporal Pressure Variations, J. Korean Society of Visualization, Vol.12, No.1, pp.13-17.
Sung, J., Park, S. M. and Yoo, J. Y., 2004, "Time-Resolved Two-Phase PIV Measurements of Freely Rising Bubble Flows with an Image Separation Method," J. Korean Society of Visualization, Vol.2, No.1, pp.39-45.