Thanks for correcting me, I forgot to add the Http:// at the start of the link.
Some interesting info here on composites.
They list Helimolar, Herculite and Conquest as bad.
I think in Marnicas case her sensitivity is because the Diamond Crown doesn't block the energy flow through the filled tooth.
I think with some calcium and time this should settle which is to her benefit as she has a good brand of composite.