| 摘要 |
Compositions, with controlled and programmed hardening, to record mucodynamic dental impressions, characterized in that they comprise: -Polyvinyl acetate (PVAc) 50-85% by weight -C3 to C6 aliphatic ketones 2-25% by weight -C3 to C8 aliphatic esters 1-25% by weight -C2 to C10 aliphatic alcohols 1-25% by weight -and/or aliphatic ethers -Non-toxic, non-aromatic 0.5-10% by weight -plasticizing oils selected -from the group consisting -of dioctyl adipate, glycerol -triacetate and polyglycols -Non-toxic and non-extractable 0-2% by weight -black, yellow, red or white -organic pigments or a -combination thereof - and is free of any gel-forming components, peroxide-based catalysts, aromatic compounds and incompatible plasticizers.
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