Disclosed is a material for a denture base containing a polymer component and containing an acrylic resin.

The present invention provides a dental adhesive exhibiting excellent initial bond strength and bond durability to both enamel and dentin. The present invention relates to a dental adhesive containing: an asymmetric acrylamide-methacrylic acid ester compound (a); an acid group-containing (meth)acrylic polymerizable monomer (b); and a water-soluble polymerizable monomer (c). The asymmetric acrylamide-methacrylic acid ester compound (a) is represented by the following general formula (1): ##STR00001##
where X is an optionally substituted, linear or branched C.sub.1 to C.sub.6 aliphatic group or an optionally substituted aromatic group, the aliphatic group is optionally interrupted by at least one linking group selected from the group consisting of O, S, CO, COO, OCO, NR.sup.1, CONR.sup.1, NR.sup.1CO, COONR.sup.1, OCONR.sup.1, and NR.sup.1CONR.sup.1, and R.sup.1 is a hydrogen atom or an optionally substituted, linear or branched C.sub.1 to C.sub.6 aliphatic group.

The invention relates to a curable composition for dental use comprising polyoxymetalates and/or derivatives thereof in an amount of at least about 5 wt.-% with respect to the weight of the composition.

Presently described are dental compositions comprising one or more fatty mono(meth)acrylates, methods of use, dental articles, and methods of making dental compositions. It has been found that a relatively low concentration of a fatty mono(meth)acrylate can improve the handling characteristics of a dental composition by reducing the tendency of the composition to stick to a dental instrument and/or by reducing the tendency of a dental composition to string when being manipulated by a dental instrument. In one embodiment, a hardenable dental composition is described comprising a polymerizable resin composition comprising at least one multifunctional ethylenically unsaturated monomer; 0.2 to 10 wt-% of one or more fatty mono(meth)acrylate monomers; and at least 50 wt-% of inorganic oxide filler.

The present disclosure relates to a bone cement composed of a hydrophilic component and a hydrophobic component, wherein biodegradable material is deposited in pores of the bone cement via the hydrophilic component.

A method of making a prosthetic dental item comprises selecting a block having a square or rectangular cross-section along is extent, wherein said block comprises polyetheretherketone and, optionally, an apatite, wherein said polymeric material has a crystallinity of at least 25%. The method comprises machining the block in dependence upon data collated using digital technology. Since the crystallinity of the material selected is high, a post-machining step whereby crystallinity is increased can be avoided, and dental items of high precision can be formed.

The invention provides a radically polymerizable compound wherein an acid group is joined via a spacer group to a polyethyleneimine group. The polyethyleneimine group has at least one radically polymerizable group in the side chain and/or terminally. The invention relates further to a process for preparing such compounds by cationic polymerization of oxazolines, to the use of such compounds as constituents of a dental material, and to a dental material comprising the compounds of the invention.

The invention relates to a kit of parts comprising part A and part B, part A comprising a polymerizable component having an acid group in the molecule, an initiator, part B comprising an activator, and a film former with a molecular weight of at least 1000. The invention also relates to a composition obtainable by mixing the components contained in the kit of parts and to a process for producing the kit of parts comprising the steps of bringing the components contained in part B of the kit in contact with a surface, drying the surface to form a film.

Block for use in a CAD/CAM system for the manufacture of a dental restauration, said block consisting of a thermoplastic polymer comprising PEEK including radiopaque particles selected from the group comprising BaZrO.sub.3, YbF.sub.3, Yb.sub.2O.sub.3, SrO, SrZrO.sub.3, SiO.sub.2ZrO.sub.2, SiO.sub.2Yb.sub.2O.sub.3, Lu.sub.2O.sub.3, LUF.sub.3.

Dental material, which contains an ene compound with two or more CC multiple bonds and a thiol according to general Formula (1) or an oligomer based on such a thiol, ##STR00001##
wherein n, p and m are chosen such that the thiol has a total of at least 3 SH groups.