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Science 2 August 1968:
Vol. 161. no. 3840, pp. 477 - 478
DOI: 10.1126/science.161.3840.477
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Articles

Looking into Teeth with Ultrasound

Sidney Lees 1 and Frank E. Barber 1

1 Bioengineering Department, Forsyth Dental Center, Boston, Massachusetts 02115

Ultrasound is readily conducted across a boundary when the specific acoustic impedances of the two media are about equal. The specific acoustic impedance of dental enamel is about that of aluminum. A longitudinal sonic pulse, less than 250 nanoseconds in duration, conducted to the tooth through an aluminum rod, has positively detected the enamel-dentin junction as well as the dentin-pulp interface.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
The Biology, Prevention, Diagnosis and Treatment of Dental Caries: Scientific Advances in the United States.
D. T. Zero, M. Fontana, E. A. Martinez-Mier, A. Ferreira-Zandona, M. Ando, C. Gonzalez-Cabezas, and S. Bayne (2009)
J Am Dent Assoc 140, 25S-34S
   Abstract »    Full Text »    PDF »
Ultrasound crack detection in a simulated human tooth.
M. Culjat, R. Singh, E. Brown, R. Neurgaonkar, D. Yoon, and S. White (2005)
Dentomaxillofac. Radiol. 34, 80-85
   Abstract »    Full Text »    PDF »
Dental Enamel: Detection of Surface Changes by Ultrasound.
S. Lees, F. E. Barber, and R. R. Lobene (1970)
Science 169, 1314-1316
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