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Abstract

Ultrasound is used extensively in industry for the detection and characterization of defects in critical engineering structures. Similar techniques could be used in dentistry if a thorough understanding of ultrasonic wave propagation in teeth were available. This paper presents a hypothesis that finite element analysis can be used to solve the hyperbolic partial differential equation which governs ultrasonic wave propagation in teeth. A three-layer tooth phantom based on the geometry of a human second molar is used to illustrate the validity of this hypothesis. Simulated wave propagation studies are described for the tooth phantom with a gold crown layer, with an amalgam restoration insertion, and containing a cavity. Results clearly show the finite element code's ability to predict and visualize ultrasonic wave propagation in complex dental structures.

Keywords

finite element ultrasonic testing dental diagnostics.

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References

Barber FE , Lees S. , Lobene RR (1969). Ultrasonic pulse-echo measurements in teeth. Arch Oral Biol 14.745-760.

Bickford WB (1990). A first in the finite element method. Boston. Richard D. Irwin.

Briggs A. (1992). Acoustic microscopy. In: Biological tissue, New York: Oxford University Press, pp. 165-202.

Ghorayeb SR , Yamano M. , You Z. , Lord W. ( 1992). Ultrasonic SAFT reconstruction using the finite element modeling. Rev Prog Quantitative NDE 11(B):2185-2191.

Ghorayeb SR , Lord W. , Xue T. (1994a). The study of ultrasonic wave propagation in a tooth pantom. Proceedings of the Third ASNT Annual Research Symposium, Mar. 21-15, pp. 27-30.

Ghorayeb SR , Lord W. , Udpa 55 (1994b). Application of a beamforming technique to ultrasound imaging in nondestructive testing. IEEE Trans Ultrason Ferroelec Freq Contr 41:199-208.

Ludwig R. , Lord W. ( 1988a). A finite element study of ultrasonic wave propagation and scattering in an aluminum block. Mater Eval 46:108-113,

Ludwig R. , Lord W. ( 1988b). A finite-element formulation for the study of ultrasonic NDT phenomena. IEEE Trans Ultrason Ferroelee Freq Contr 35:809-820.

Newberry BP , Thompson RB (1989). A paraxial theory for the of ultrasonic beam in anisotropic solids. J Accost Soc Am 85:2290-2300.

10.

Peck SD , Rowe JM , Briggs CA (1989). Studies on sound and carious enamel with the quantitative acoustic microscope. J Dent Res 68:107-112.

11.

Uehida H. , Kobayashi K. , Nagao M. (1989), Measurement in vivo of masticatory mucosal thickness with 20 MHz B-mode ultrasonic diagnostic equipment. J Dent Res 68:95-100.

12.

Xue T. , Lord W. , Udpa S. ( 1995). Transient fields of pulsed transducers in solids. Res Nondestr Eval 7:31-53.

13.

Xue T. , Lord W. , Udpa S. ( 1996). Numerical analysis of the radiated fields of pistons and time-delay spherically focused arrays. IEEE Trans Ultrason Ferroelec Freq Contr 43:78-87.

14.

Yon Z. (1991). Finite element study of ultrasonic imaging (dissertation) . Ames, IA; Iowa State University .

15.

You Z. , Lusk M. , Ludwig R. , Lord W. ( 1991). Numerical simulation of ultrasonic wave propagation in anisotropic and attenuative solid materials. IEEE Trans Ultrason Ferroelec Freq Contr 38:436-445.

A Finite Element Study of Ultrasonic Wave Propagation in a Tooth Phantom

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