[math-fun] Sonic screwdrivers for dentists?

Is it possible to design materials so that they'll fall apart (or change state in other useful ways) when stimulated by vibrations of a particular frequency? I just had a temporary crown put on one of my teeth. The dentist used a weak adhesive (so that he'd be able to remove it a couple of weeks from now when the real crown is available), and the crown just broke (I'm guessing that the weak adhesive that he used was at least as much a factor as the scone I crunched). Could there be a stronger adhesive that loses its adhesive virtue when you make it vibrate it just so? (Might dentists if the future say "Don't sing any loud B-flats for the next two weeks"?) Jim Propp