Evaluation of layer thickness in human teeth using higher-order-mode leaky Lamb wave interdigital transducers

An ultrasonic nondestructive evaluation technique of the layer thickness in human teeth is proposed using a leaky Lamb wave device with two arch-shaped interdigital transducers, operating at a plate∕water interface. The use of a higher-order-mode leaky Lamb wave with a phase velocity higher than the...

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Bibliographic Details
Published in:Review of scientific instruments 2005-03, Vol.76 (3), p.036108-036108-3
Main Authors: Toda, Shinji, Fujita, Takeshi, Arakawa, Hirohisa, Toda, Kohji
Format: Article
Language:English
Subjects:
DENTIN
DENTISTRY
NONDESTRUCTIVE ANALYSIS
PHASE VELOCITY
RADIOLOGY AND NUCLEAR MEDICINE
SOUND WAVES
TEETH
THICKNESS
TRANSDUCERS
ULTRASONIC TESTING
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Summary:An ultrasonic nondestructive evaluation technique of the layer thickness in human teeth is proposed using a leaky Lamb wave device with two arch-shaped interdigital transducers, operating at a plate∕water interface. The use of a higher-order-mode leaky Lamb wave with a phase velocity higher than the longitudinal wave velocity in the human tooth is essential to detect reflected ultrasound beams from the tooth section The layer thickness of dentin, estimated from the measured time interval between two reflected echoes, is in good agreement with the optically measured data.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1866234