Abstract: A method of making solid die dental models is provided, comprising preparing an impression of a dental structure and fabricating a dental model using said impression by depositing therein a flowable modeling material which self-sets under ambient conditions to a substantially solid elastomeric state. The flowable modeling material preferably has an initial viscosity of less than about 30,000 cps, and preferably sets to a substantially solid state in less than about an hour to provide a solid elastomeric state having a durometer hardness of at least about 60. The resulting dental model can be employed for construction of accurate and precise composite dental restorations.

Abstract: A polymeric composition is provided, comprising:a base component, comprising a first alkenyl-terminated short chain polydiorganosiloxane and a cross-linker; anda catalytic component, comprising a second alkenyl-terminated short chain polydiorganosiloxane and a catalyst,wherein:at least one of the base component and the catalytic component further comprises a filler;said first and second alkenyl-terminated short chain polydiorganosiloxanes together comprise from about 15 wt % to about 40 wt %,said cross-linker comprises from about 1 wt % to about 15 wt %,said catalyst comprises from about 0.005 wt % to about 5 wt %, andsaid filler comprises from about 30 wt % to about 80 wt %, based on the total weight of the composition; andwherein the composition sets to a solid elastomeric state at about room temperature following mixing of said base component and said catalytic component.