A study of adhesion between dental cement and dentin using non-destructive ultrasonic testing Online publication date: Tue, 13-Jun-2017
by Touriya Bassidi; Lahcen Mountassir; Hassan Nounah; Khalid Bouabid
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 11, No. 6, 2016
Abstract: The retention of indirect dental restoration is reliant on the degree of the adhesion between dental materials and dentin. In this work, we introduce a new approach to characterise the cement-dentin interface using a Brekhovskikh model. This model is used to study the propagation of acoustic waves in a multilayered medium. The reflection coefficient of plane waves has been calculated. Then, the Lamb waves dispersion curves for the considered media have been produced. The difference between the acoustic properties of good and bad adhesion has been found. The amplitude of signal reflection from the cement-dentine interface is higher in the case of the bad bonding than in the case of good adhesion. The analysis of dispersion curves shows that the behaviour of some modes strongly depends on the quality of bonding. The obtained results demonstrate that ultrasound method is a valuable method for analysis of cement-dentin interface.
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