Curable self-supporting structure and method

The present invention relates to a preformed dental product comprising a hardenable composition, wherein the hardenable composition comprises a resin system, a filler system, and an initiator system; wherein the hardenable composition is in the form of a hardenable, self-supporting structure having a first shape and sufficient malleability to be reformed into a second shape at a temperature of about 15°C to 38°C.