Numerical investigation of cavitation generated by an ultrasonic dental scaler tip vibrating in a compressible liquid

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@article{215831953b0d4ee59310cb7c4b9ecd81,
title = "Numerical investigation of cavitation generated by an ultrasonic dental scaler tip vibrating in a compressible liquid",
abstract = "Bacterial biofilm accumulation around dental implants is a significant problem leading to peri-implant diseases and implant failure. Cavitation occurring in the cooling water around ultrasonic scaler tips can be used as a novel solution to remove debris without any surface damage. However, current clinically available instruments provide insufficient cavitation around the activated tip surface. To solve this problem a critical understanding of the vibro-acoustic behaviour of the scaler tip and the associated cavitation dynamics is necessary. In this research, we carried out a numerical study for an ultrasound dental scaler with a curved shape tip vibrating in water, using ABAQUS based on the finite element method. We simulated the three-dimensional, nonlinear and transient interaction between the vibration and deformation of the scaler tip, the water flow around the scaler and the cavitation formation and dynamics. The numerical model was well validated with the experiments and there was excellent agreement for displacement at the free end of the scaler. A systematic parametric study has been carried out for the cavitation volume around the scaler tip in terms of the frequency, amplitude and power of the tip vibration. The numerical results indicate that the amount of cavitation around the scaler tip increases with the frequency and amplitude of the vibration. However, if the frequency is far from the natural frequency, the cavitation volume around the free end decreases due to reduced free end vibration amplitude.",
keywords = "Vibro-acoustics, Finite element method, Cavitation, Dental implant, Ultrasonic scaler tip",
author = "Kawa Manmi and Wu, {W. B.} and Nina Vyas and Warren Smith and Qian Wang and Damian Walmsley",
year = "2020",
month = may,
doi = "10.1016/j.ultsonch.2020.104963",
language = "English",
volume = "63",
journal = "Ultrasonics Sonochemistry",
issn = "1350-4177",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Numerical investigation of cavitation generated by an ultrasonic dental scaler tip vibrating in a compressible liquid

AU - Manmi, Kawa

AU - Wu, W. B.

AU - Vyas, Nina

AU - Smith, Warren

AU - Wang, Qian

AU - Walmsley, Damian

PY - 2020/5

Y1 - 2020/5

N2 - Bacterial biofilm accumulation around dental implants is a significant problem leading to peri-implant diseases and implant failure. Cavitation occurring in the cooling water around ultrasonic scaler tips can be used as a novel solution to remove debris without any surface damage. However, current clinically available instruments provide insufficient cavitation around the activated tip surface. To solve this problem a critical understanding of the vibro-acoustic behaviour of the scaler tip and the associated cavitation dynamics is necessary. In this research, we carried out a numerical study for an ultrasound dental scaler with a curved shape tip vibrating in water, using ABAQUS based on the finite element method. We simulated the three-dimensional, nonlinear and transient interaction between the vibration and deformation of the scaler tip, the water flow around the scaler and the cavitation formation and dynamics. The numerical model was well validated with the experiments and there was excellent agreement for displacement at the free end of the scaler. A systematic parametric study has been carried out for the cavitation volume around the scaler tip in terms of the frequency, amplitude and power of the tip vibration. The numerical results indicate that the amount of cavitation around the scaler tip increases with the frequency and amplitude of the vibration. However, if the frequency is far from the natural frequency, the cavitation volume around the free end decreases due to reduced free end vibration amplitude.

AB - Bacterial biofilm accumulation around dental implants is a significant problem leading to peri-implant diseases and implant failure. Cavitation occurring in the cooling water around ultrasonic scaler tips can be used as a novel solution to remove debris without any surface damage. However, current clinically available instruments provide insufficient cavitation around the activated tip surface. To solve this problem a critical understanding of the vibro-acoustic behaviour of the scaler tip and the associated cavitation dynamics is necessary. In this research, we carried out a numerical study for an ultrasound dental scaler with a curved shape tip vibrating in water, using ABAQUS based on the finite element method. We simulated the three-dimensional, nonlinear and transient interaction between the vibration and deformation of the scaler tip, the water flow around the scaler and the cavitation formation and dynamics. The numerical model was well validated with the experiments and there was excellent agreement for displacement at the free end of the scaler. A systematic parametric study has been carried out for the cavitation volume around the scaler tip in terms of the frequency, amplitude and power of the tip vibration. The numerical results indicate that the amount of cavitation around the scaler tip increases with the frequency and amplitude of the vibration. However, if the frequency is far from the natural frequency, the cavitation volume around the free end decreases due to reduced free end vibration amplitude.

KW - Vibro-acoustics

KW - Finite element method

KW - Cavitation

KW - Dental implant

KW - Ultrasonic scaler tip

U2 - 10.1016/j.ultsonch.2020.104963

DO - 10.1016/j.ultsonch.2020.104963

M3 - Article

VL - 63

JO - Ultrasonics Sonochemistry

JF - Ultrasonics Sonochemistry

SN - 1350-4177

M1 - 104963

ER -