Striking effect of some revolutionary dental cement (5)
I believe the answer is:
eclat
'striking effect' is the definition.
(I've seen this before)
'some revolutionary dental cement' is the wordplay.
'revolutionary' says the letters should be written in reverse (letters revolve around).
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'talce' is hidden within 'dental cement'.
'talce' backwards is 'ECLAT'.
'of' is the link.
(Other definitions for eclat that I've seen before include "French social distinction or success" , "Splash" , "Cleat (anag.)" , "Ostentation" , "Brilliant display or effect" .)