PRELIMINARY BINDING FOR DENTAL USE

摘要

1. A pre-sintered preform for dental use based on glass ceramics based on lithium disilicate, the preform having a relative density of 60 to 90%, in particular 62 to 88% and preferably 65 to 87%, relative to the true density of the glass ceramics. 2 . A preform according to claim 1, which essentially consists of glass ceramics based on lithium disilicate. Harvesting according to one of paragraphs. 1 or 2, which contains glass ceramics based on lithium disilicate as the main crystalline phase, in particular more than 10 vol.%, Preferably more than 20 vol.% And particularly preferably more than 30 vol.% Crystals of lithium disilicate. 4. Harvesting according to one of paragraphs. 1 or 2, wherein the glass ceramics based on lithium disilicate contain at least one of the following components, wt.%: Where Me (I) O is selected from NaO, KO, RbO, CSO or mixtures thereof, Me (II) O is selected from CaO , BaO, MgO, SrO, ZnO and their mixtures, Me (III) Selected from AlO, LaO, BiO, YO, YbO and their mixtures, Me (IV) Selected from ZrO, TiO, SnO, GeO and their mixtures, Me (V) Selected from TaO, NbO and their mixtures, Me (VI) Selected from WO, MoO and their mixtures, the crystallization center is selected from PO, metals and their mixtures. 5. Harvesting according to one of paragraphs. 1 or 2, which has at least two regions, in particular a layer, which are distinguished by color or light transmission. 6. Harvesting according to one of paragraphs. 1 or 2, which has a mount for the processing device. 7. Harvesting according to one of paragraphs. 1 or 2, which has an interface device, in particular in the form of a recess, for connection with a dental implant. 8. Harvesting according to one of paragraphs. 1 or 2, which can be obtained by the method according to one of paragraphs. 10 or 11.9. Harvesting according to one of paragraphs. 1 or 2, which has a relative density, which is obtained if (a) the powder of the corresponding starting glasses with an average particle size 100 μm, relative to the number of particles, at a pressure of from 20 MPa to 200 MPa, is preferred