Expanding dental model material
OwnerJurgen Laubersheimerinventor
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Abstract
The invention describes a model material for dental purposes which has a linear expansion on setting or curing of at least 0.5%, preferably at least 1%. The model material is preferably a dental plaster which has a relatively high volume expansion on setting compared to dental plasters customary hitherto as a result of the use of appropriate additives and/or make-up liquids. The use of these model materials for producing working models enables the sintering shrinkage occurring during sintering to be compensated for in the production of full-ceramic shaped dental parts.
Claims15
A model material for dental purposes, characterized in that it has a linear expansion on setting or curing of at least 0.5%, preferably at least 1%.
A model material as claimed in any of the preceding claims, characterized in that it contains at least one inorganic additive, preferably at least one inorganic salt.
A process for producing a dental model, in particular a dental working model, characterized in that the model is shaped from a model material which has a linear expansion on setting or curing of at least 0.5%, preferably at least 1%, and the model obtained in this way is subsequently allowed to set or is cured.
The use of a material which has a linear expansion on setting or curing of at least 0.5%, preferably at least 1%, for producing full-ceramic shaped dental parts, where the sintering shrinkage which occurs on sintering a green ceramic body formed on a working model is compensated for at least partly, preferably fully, by the expansion of the model material in the production of the working model.
Dependencies are inferred from the claim text.