| 摘要 |
Monophase silicone impression compositions are provided which crosslinks by an addition reaction. The compositions may include: (a) organopolysiloxanes with at least two unsaturated groups in the molecule, (b) organohydrogenpolysiloxanes with at least 2 SiH groups in the molecule, (c) if appropriate organopolysiloxane without reactive groups, (d) platinum catalyst, (e) hydrophilizing agent, (f) diatomaceous earth, (g) filler, and (h) if appropriate further customary additives, auxiliaries and dyestuffs, the amount of component (f) being 8 to 25 wt.%, based on the total weight of the cured composition, and the composition having a Shore hardness A, to be determined in accordance with DIN 53505, of less than 45 - measured after 30 minutes, and a viscosity to be determined in accordance with ISO 4823, of 31 to 39 mm. The impression composition is suitable for the production of provisional bridges and crowns.
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