Acoustic streaming induced by an ultrasonically oscillating endodontic file

B. Verhaagen, C. Boutsioukis, L.W.M. van der Sluis, Michel Versluis

Research output: Contribution to journalArticleAcademicpeer-review

17 Citations (Scopus)

Abstract

Ultrasonically activated irrigation is an advanced dental technique for irrigation of the root canal system during a root canal treatment. The basic cleaning mechanism is a result of acoustic streaming induced by an oscillating file, leading to mixing of the irrigant and pressure and shear stresses on the walls of the root canal. Here the induced acoustic streaming, pressure, and shear stress are investigated in a two-dimensional cross-section of the root canal, using a combination of theory, numerical predictions, and experimental validation through high-speed particle tracking velocimetry. Acoustic streaming theory describes very well the flow induced by an ultrasonically oscillating endodontic file. It consists of an oscillatory component, which is dominant near the file, and a steady component, or jet, along the axis of oscillation. The importance of the oscillatory component for both the pressure and the shear stress is apparent, as it is two to three orders of magnitude higher than the steady component. A confinement affects the formation of the steady jets; meanwhile the oscillatory velocities and associated pressure and shear stress are increased. Previous work considering only the steady component of the flow therefore, underestimated the hydrodynamic effects induced by ultrasonic files.
Original languageEnglish
Pages (from-to)1717-1730
Number of pages14
JournalJournal of the Acoustical Society of America
Volume135
DOIs
Publication statusPublished - 2014

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acoustic streaming
files
canals
shear stress
irrigation
cleaning
ultrasonics
hydrodynamics
high speed
File
Acoustics
Streaming
oscillations
Canals
cross sections
predictions

Keywords

  • METIS-303712
  • IR-94870

Cite this

Verhaagen, B. ; Boutsioukis, C. ; van der Sluis, L.W.M. ; Versluis, Michel. / Acoustic streaming induced by an ultrasonically oscillating endodontic file. In: Journal of the Acoustical Society of America. 2014 ; Vol. 135. pp. 1717-1730.
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abstract = "Ultrasonically activated irrigation is an advanced dental technique for irrigation of the root canal system during a root canal treatment. The basic cleaning mechanism is a result of acoustic streaming induced by an oscillating file, leading to mixing of the irrigant and pressure and shear stresses on the walls of the root canal. Here the induced acoustic streaming, pressure, and shear stress are investigated in a two-dimensional cross-section of the root canal, using a combination of theory, numerical predictions, and experimental validation through high-speed particle tracking velocimetry. Acoustic streaming theory describes very well the flow induced by an ultrasonically oscillating endodontic file. It consists of an oscillatory component, which is dominant near the file, and a steady component, or jet, along the axis of oscillation. The importance of the oscillatory component for both the pressure and the shear stress is apparent, as it is two to three orders of magnitude higher than the steady component. A confinement affects the formation of the steady jets; meanwhile the oscillatory velocities and associated pressure and shear stress are increased. Previous work considering only the steady component of the flow therefore, underestimated the hydrodynamic effects induced by ultrasonic files.",
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Acoustic streaming induced by an ultrasonically oscillating endodontic file. / Verhaagen, B.; Boutsioukis, C.; van der Sluis, L.W.M.; Versluis, Michel.

In: Journal of the Acoustical Society of America, Vol. 135, 2014, p. 1717-1730.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Acoustic streaming induced by an ultrasonically oscillating endodontic file

AU - Verhaagen, B.

AU - Boutsioukis, C.

AU - van der Sluis, L.W.M.

AU - Versluis, Michel

PY - 2014

Y1 - 2014

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AB - Ultrasonically activated irrigation is an advanced dental technique for irrigation of the root canal system during a root canal treatment. The basic cleaning mechanism is a result of acoustic streaming induced by an oscillating file, leading to mixing of the irrigant and pressure and shear stresses on the walls of the root canal. Here the induced acoustic streaming, pressure, and shear stress are investigated in a two-dimensional cross-section of the root canal, using a combination of theory, numerical predictions, and experimental validation through high-speed particle tracking velocimetry. Acoustic streaming theory describes very well the flow induced by an ultrasonically oscillating endodontic file. It consists of an oscillatory component, which is dominant near the file, and a steady component, or jet, along the axis of oscillation. The importance of the oscillatory component for both the pressure and the shear stress is apparent, as it is two to three orders of magnitude higher than the steady component. A confinement affects the formation of the steady jets; meanwhile the oscillatory velocities and associated pressure and shear stress are increased. Previous work considering only the steady component of the flow therefore, underestimated the hydrodynamic effects induced by ultrasonic files.

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