To enhance strength while keeping characteristics of conventional one such as excellent setting characteristics, high hardness of a set material, and high machinability, an impression material composition for recording occlusion comprises (A) 100 weight parts of organopolysiloxane having at least two aliphatic unsaturated groups in one molecule and viscosity of 50 to 600 mPas at 25.degree. C.; (B) 0.1-30 weight parts of organohydrogenpolysiloxane having at least two HSiR.sub.2O.sub.1/2 units in one molecule and/or organohydrogenpolysiloxane having an HSiR.sub.2O.sub.1/2 unit and an SiO.sub.1/2 unit; (C) 0.1-20 weight parts of silicone resin having a specific molecular weight in which the repeating units comprise R1.sub.3SiO.sub.1/2 and SiO.sub.1/2, and a mol ratio of R1.sub.SiO.sub.1/2 unit to SiO.sub.1/2 unit is 0.4 to 2.0, (D) a silicone-soluble platinum compound in an amount of 10-500 ppm; and-(E) 20-500 weight parts of inorganic filler.