stoe psel for the production of cavities in artificial lightweight tooth and method for the preparation of these zaehne

摘要

1303673 Moulding teeth H RAUTER 20 March 1970 [28 March 1969] 13514/70 Heading B5A [Also in Division A5] A process for manufacturing an artificial tooth having an anchorage recess, comprises inserting a plug made from a mixture of carbonatecontaining material and a bonding agent, together with the tooth mass into a tooth mould, manufacturing the tooth, and subjecting the plug to the action of an acid to dissolve it. The plug material may be selected from calcite, chalk, calcspar, marble, magnesite, dolomite, witherite, strontianite, or barium carbonate, cadmium carbonate, calcium carbonate, lithium carbonate, magnesium carbonate, strontium carbonate, and zinc carbonate, and the bonding agent is tragacanth, dextrine or starch.