Cavitation occurrence around ultrasonic dental scalers


Felver, B., King, D. C., Lea, S. C., Price, G. J. and Damien Walmsley, A., 2009. Cavitation occurrence around ultrasonic dental scalers. Ultrasonics Sonochemistry, 16 (5), pp. 692-697.

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    Ultrasonic scalers are used in dentistry to remove calculus and other contaminants from teeth. One mechanism which may assist in the cleaning is cavitation generated in cooling water around the scaler. The vibratory motion of three designs of scaler tip in a water bath has been characterised by laser vibrometry, and compared with the spatial distribution of cavitation around the scaler tips observed using sonochemiluminescence from a luminol solution. The type of cavitation was confirmed by acoustic emission analysed by a 'Cavimeter' supplied by NPL. A node/antinode vibration pattern was observed, with the maximum displacement of each type of tip occurring at the free end. High levels of cavitation activity occurred in areas surrounding the vibration antinodes, although minimal levels were observed at the free end of the tip. There was also good correlation between vibration amplitude and sonochemiluminescence at other points along the scaler tip. 'Cavimeter' analysis correlated well with luminol observations, suggesting the presence of primarily transient cavitation.


    Item Type Articles
    CreatorsFelver, B., King, D. C., Lea, S. C., Price, G. J. and Damien Walmsley, A.
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    URLURL Type
    Uncontrolled Keywordsscanning,cavitation,ultrasonics,cooling water,lasers,dentistry,size distribution
    DepartmentsFaculty of Science > Chemistry
    Publisher Statementultrasonics_paper_dental_final_draft.pdf: NOTICE: this is the author’s version of a work that was accepted for publication in Ultrasonics Sonochemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Ultrasonics Sonochemistry, 16(5), 2009.
    ID Code15429


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