Revolutionary PV Try-In composites are the same composite with no photo initiator. They are optically the same as the cementing composites, but will not set. There is no need for full Try-In removal. PV Try-In composite provides a highly accurate shade match. Excess try-in cement is simply brushed off and the matching Accolade PV Composite is directly applied. Conventional water or glycerin based pastes are often not true to color and are a source of contamination and bond failure.