| 摘要 |
The material comprises a room-temperature-setting, rubbery and elastic impression material, typically a silicone impression material, containing 20.0 to 75.0% by weight of a radioopaque substance, preferably in the form of a finely divided powder. Other applicable RTV rubbers are polyether and polysulphide. Typical radioopaque additives are barium sulphate, strontium fluoride, calcium tungstate, lanthanum fluoride, tungsten oxide and carbide, and zinc metal.
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