The invention relates to a radiation-curable radiopaque dental composition comprising a resin matrix comprising cross-linkable component(s) as Component A, ethylenically unsaturated component(s) with acidic moiety as Component B, an initiator system comprising photoinitiator(s) as Component C, reducing agent(s) as Component D, Component A containing at least two (meth)acrylate moieties and a brominated aromatic moiety selected from brominated resorcinol, catechol, tyrosol, benzoic acid, or phenol moieties. The composition can be used for producing an x-ray visible dental adhesive composition, restoration primer or dental sealant.

The invention relates to a radiation-curable radiopaque dental composition comprising a resin matrix comprising cross-linkable component(s) as Component A, ethylenically unsaturated component(s) with acidic moiety as Component B, an initiator system comprising photoinitiator(s) as Component C, reducing agent(s) as Component D, Component A containing at least two (meth)acrylate moieties and a brominated aromatic moiety selected from brominated resorcinol, catechol, tyrosol, benzoic acid, or phenol moieties. The composition can be used for producing an x-ray visible dental adhesive composition, restoration primer or dental sealant.

The present invention relates to a method of fabricating an improved lithium silicate glass ceramic and to that material for the manufacture of blocks for dental appliances using a CAD/CAM process and hot pressing system. The lithium silicate material has a chemical composition that is different from those reported in the prior art with 1 to 10% of germanium dioxide in final composition. The softening points are close to the crystallization final temperature of 800° C. indicating that the samples will support the temperature process without shape deformation.

Described herein is a dental filler material having a core made of a core material and a shell made of a shell material, where the shell material coats or covers at least a portion of the core.

A block for dental prostheses is in the form of a column or a board, a main crystalline phase of the block being of lithium disilicate, and when the block is observed in a field of view of a partially enlarged cross section of the block, the proportion of the total area of crystals having a length of at least 0.5 μm, the crystals appearing in the field of view, to an area of the field of view is at most 21%.

The present invention is related to a method for producing a ceramic multilayer blank comprising at least a first layer of a first ceramic material and at least a second layer of a second ceramic material, wherein the first layer and the second layer are made of ceramic materials of different compositions, which are filled in pourable condition layer-by-layer into a mold and thereafter they are pressed and then sintered, wherein the first layer is a pink colored layer, wherein the first ceramic material comprises 2 to 25 wt % erbium oxide.

The present invention relates to a dental composition comprising (i) an acidic polymerizable compound of the following formula (Ia), (Ib) or (Ic): ##STR00001##
wherein X, Y, Y′, Z, L, R.sup.2, R.sup.3 and R.sup.4 are as defined in claim 1; and (ii) an initiator system. Furthermore, the present invention relates to the use of the polymerizable compound of formula (I) for the preparation of a dental composition.

Provided are methods for preparing iron nanoparticles and to iron nanoparticles produced by those methods. The invention also provides methods for coating the iron nanoparticles with oxides and functionalizing the iron nanoparticles with organic and polymeric ligands. Additionally, the invention provides methods of using such iron nanoparticles.

Provided are methods for preparing iron nanoparticles and to iron nanoparticles produced by those methods. The invention also provides methods for coating the iron nanoparticles with oxides and functionalizing the iron nanoparticles with organic and polymeric ligands. Additionally, the invention provides methods of using such iron nanoparticles.

Provided are methods for preparing iron nanoparticles and to iron nanoparticles produced by those methods. The invention also provides methods for coating the iron nanoparticles with oxides and functionalizing the iron nanoparticles with organic and polymeric ligands. Additionally, the invention provides methods of using such iron nanoparticles.