title: A computational simulation study on the acoustic pressure generated by a dental endosonic file: effects of intensity, file shape and volume.
abstract: One of the uses of ultrasound in dentistry is in the field of endodontics (i.e. root canal treatment) in order to enhance cleaning efficiency during the treatment. The acoustic pressures generated by the oscillation of files in narrow channels has been calculated using the COMSOL simulation package. Acoustic pressures in excess of the cavitation threshold can be generated and higher values were found in narrower channels. This parallels experimental observations of sonochemiluminescence. The effect of varying the channel width and length and the dimensions and shape of the file are reported. As well as explaining experimental observations, the work provides a basis for the further development and optimisation of the design of endosonic files.
authors.affiliation: Manufacturing and Industrial Processes Research Division, Faculty of Engineering, University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia. Electronic address: joyce.tiong@nottingham.edu.my.
authors.forename: T Joyce
authors.initials: TJ
authors.lastname: Tiong
authors.affiliation: Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.
authors.forename: Gareth J
authors.initials: GJ
authors.lastname: Price
authors.affiliation: Department of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia.
authors.forename: Shalini
authors.initials: S
authors.lastname: Kanagasingam
mesh_terms: D000465:Algorithms; D000818:Animals; D003198:Computer Simulation; D003762:Dental Instruments; D003786:Dental Pulp Cavity / Q000033:anatomy & histology; D004285:Dogs; D004708:Endodontics / Q000295:instrumentation*; D004867:Equipment Design; D008953:Models, Anatomic; D011312:Pressure; D018915:Root Canal Preparation; D014465:Ultrasonics / Q000295:instrumentation*
keywords: Acoustic pressure; COMSOL; Cavitation; Cleaning; Endodontic