The present invention relates to a method of preparing a composition comprising:combining a resin system, a filler system at least a portion of which is an inorganic material comprising nanoscopic particles having an average primary particle size of no greater than about 50 nm, and an initiator system to form a mixture；forming the mixture into a hardenable self-supporting structure having a first shape；wherein the hardenable self-supporting structure having a first shape has sufficient malleability to be formed into a second shape.
