Sonochemical characterisation of ultrasonic dental descalers

Gareth J. Price, T. Joyce Tiong, David C. King

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An ultrasonic dental descaling instrument has been characterised using sonochemical techniques. Mapping the emission from luminol solution revealed the distribution of cavitation produced in water around the tips. Hydroxyl radical production rates arising from water sonolysis were measured using terephthalate dosimetry and found to be in the range of μmol-1min, comparable with those from a sonochemical horn. Removal of an ink coating from a glass slide showed that cleaning occurred primarily where the tip contacted the surface but was also observed in regions where cavitation occurred even when the tip did not contact the surface. Differences in behaviour were noted between different tip designs and computer simulation of the acoustic pressure distributions using COMSOL showed the reasons behind the different behaviour of the tip designs.

Original languageEnglish
Pages (from-to)2052-2060
JournalUltrasonics Sonochemistry
Issue number6
Early online date8 Jan 2014
Publication statusPublished - Nov 2014


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