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

Journal Article · Tue Mar 01 00:00:00 EST 2005 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1866234· OSTI ID:20644144

Toda, Shinji; Fujita, Takeshi; Arakawa, Hirohisa; Toda, Kohji ^[1]

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1. Department of Dental and Public Health, Kanagawa Dental College, 82 Inaoka, Yokosuka 238-8580 (Japan)

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.

• OSTI ID: 20644144
• Journal Information: Review of Scientific Instruments, Vol. 76, Issue 3; Other Information: DOI: 10.1063/1.1866234; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
DENTIN
DENTISTRY
NONDESTRUCTIVE ANALYSIS
PHASE VELOCITY
SOUND WAVES
TEETH
THICKNESS
TRANSDUCERS
ULTRASONIC TESTING