An experimental and computational study of the hydrodynamics of high-velocity water microdrops for interproximal tooth cleaning

Journal of the Mechanical Behavior of Biomedical Materials
A RmaileP Stoodley

Abstract

The flow field and local hydrodynamics of high-velocity water microdrops impacting the interproximal (IP) space of typodont teeth were studied experimentally and computationally. Fourteen-day old Streptococcus mutans biofilms in the IP space were treated by a prototype AirFloss delivering 115 µL of water at a maximum exit-velocity of 60 ms(-1) in a 33-ms burst. Using high-speed imaging, footage was generated showing the details of the burst, and demonstrating the removal mechanism of the biofilms. Footage was also generated to characterize the viscoelastic behavior of the biofilms when impacted by an air-only burst, which was compared to the water burst. Image analysis demonstrated the importance of fluid forces on the removal pattern of interdental biofilms. X-ray micro-Computed Tomography (µ-CT) was used to obtain 3D images of the typodont and the IP spaces. Computational Fluid Dynamics (CFD) simulations were performed to study the effect of changing the nozzle position and design on the hydrodynamics within the IP space. Results confirmed our previous data regarding the wall shear stress generated by high-velocity water drops which dictated the efficacy of biofilm detachment. Finally, we showed how CFD models could be used t...Continue Reading

References

Sep 13, 2002·Biotechnology and Bioengineering·I KlapperP Stoodley
Jul 8, 2005·Applied and Environmental Microbiology·Prashant K SharmaHenk J Busscher
Jul 29, 2005·European Journal of Oral Sciences·Prashant K SharmaHenk J Busscher
Sep 29, 2009·Journal of Dental Research·E ParamonovaP K Sharma
Dec 8, 2010·Periodontology 2000·Philip D MarshDeirdre A Devine
Jul 16, 2011·Soft Matter·Oliver LielegKatharina Ribbeck
Feb 23, 2012·Biofouling·Philip S Stewart
Jan 1, 2014·Pathogens and Disease·Philip S Stewart

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Citations

Jan 16, 2016·Journal of the Mechanical Behavior of Biomedical Materials·S FabbriP Stoodley
Aug 25, 2016·Journal of Dental Research·S FabbriP Stoodley
Aug 12, 2017·Environmental Microbiology·Stefania FabbriPaul Stoodley
Apr 1, 2018·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Cory S KnechtDevendra H Dusane
Aug 23, 2018·NPJ Biofilms and Microbiomes·Héloïse BoudarelMichel Grédiac
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Harinash RaoPei Pei Chong
May 27, 2021·Clinical and Experimental Dental Research·Kristina BertlAndreas Stavropoulos
Jun 2, 2021·Clinical and Experimental Dental Research·Kristina BertlAndreas Stavropoulos

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