Abstract: The present invention relates to dental composites comprising at least one nanoparticulate mixed oxide (a) of SiO2 with X-ray-opaque metal oxides of one or more elements selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu which has been prepared by flame spraying.

Abstract: Dental material which contains at least one radically polymerizable monomer according to the general formula (I): in which PG is a cyclic, ring-opening polymerizable group; X1 is absent, O, S, is an ester, amide or urethane group; X2 is absent with, O, S, is an ester, amide or urethane group; Y is absent, O, S, is an ester, amide or urethane group; R is an organic radical with a valency of (n+m), with 1 to 35 carbon atoms and 0 to 8 heteroatoms, the H atoms of which can be wholly or partially substituted by F atoms; R1 is absent or is a C1-C16 alkylene radical which can be interrupted by O atoms; R2 is absent or is a C1-C16 alkylene radical which can be interrupted by O atoms; n is 1, 2, 3, 4, 5 or 6; m is 1, 2 or 3; HG is —P?O(OH)2; —P?O(OH)(OR14); —O—P?O(OH)2, —O—P?O(OH)(OR15) or —SO2OH, wherein R14 is a C1-C15 alkyl radical, phenyl or benzyl radical; and R15 is a C1-C15 alkyl radical, phenyl or benzyl radical.

Abstract: Bicyclic cyclopropane derivatives of the general Formula (I) in which n+m is 0 to 8; r is 1 to 4; R1 is absent or is a C1-C20 alkylene radical which can be interrupted by O or S, a cycloaliphatic C4-C12 radical, a bicyclic C4-C12 radical, a C6-C14 arylene or C7-C20 alkylenearylene radical; R2 is for r=1 a C1-C20 alkyl radical which can be interrupted by O or S, a cycloaliphatic C4-C12 radical, a bicyclic C4-C12 radical, a C6-C14 aryl or a C7-C20 alkylaryl radical; is for r>1 an r-times substituted aliphatic C1 to C20 radical which can be interrupted by O or S, a cycloaliphatic C4-C12 radical, an aromatic C6-C14 radical or aliphatic-aromatic C7-C20 radical; X is absent or is —CO—O—, —CO—NH— or —O—CO—NH—, and Y is CH2, O or S which is suitable in particular for the preparation of dental materials.

Abstract: Dental materials and associated methods are described based on multicyclic allyl sulphides with general Formula (I): in which R1 is H or a C1-C10 alkyl radical; R2 is H or a C1-C10 alkyl radical; R3 is absent or is a C1-C20 alkylene radical which can be interrupted by O or S, a cycloaliphatic C4-C12 radical, a bicyclic C6-C12 radical, a C6-C14 arylene or C7-C20 alkylene arylene radical; R4 is an n-times substituted aliphatic C2 to C20 hydrocarbon radical which can be interrupted by O or S, a cycloaliphatic C4-C12 radical, an aromatic C6-C14 radical, an aliphatic-aromatic C7-C20 radical or a heterocyclic radical which can contain 4 to 20 carbon atoms and 1 to 6 heteroatoms which are selected from N, O, P and/or S atoms, or which is formed exclusively by these heteroatoms; R5 is absent or is a C1-C10 alkylene radical; X is absent or is O, S, —O—CO— or —O—CO—NH—; Y is absent or is O, S, —O—CO— or —O—CO—NH—; m is 0 or 1 and n is an integer from 3 to 6.

Abstract: Polymerizable dental material which contains at least one radically-polymerizable monomer and at least one bisacylphosphine oxide of the Formula I, in which R1 is a linear or branched C2 to C14 alkyl residue, which can be interrupted by one or more O atoms, PG-Y-R2-X- or a substituted or unsubstituted, aromatic C6 to C14 radical; R2 is absent or a linear or branched C1 to C20 alkylene radical, which can be interrupted by one or more O atoms; R3 is H, a linear or branched C1 to C6 alkyl residue or PG-Y-R2-X-; R4 is a linear or branched C1-C6 alkyl or —O—C1-C6 alkyl residue; R5 is H or PG-Y-R2-X-; R6 is H or PG-Y-R2-X-; PG is a polymerizable group; X is absent, O or S; Y is absent, O, S, an ester, amide or urethane group; the bisacylphosphine oxide having at least one PG-Y-R2-X group and X and/or Y being absent if R2 is absent.

Abstract: A composition comprising (A) at least one fluorinated vinylcyclopropane according to Formula (I) wherein R1 is H or —CO—O—(CH2CH2)p—R7; R2 is H or forms together with R6 a —CH2—C(R9) (R10)—CH2— residue; R3 is H; R4 is H or forms together with R5 a —CH2—C(R9) (R10)—CH2— residue; R5 is H, —CO—O—R8, —CO—O— (CH2CH2)p—R7 or forms together with R4 a —CH2—C (R9) (R10)—CH2— residue; R6 is H, —CO—O—R8, —CO—O— (CH2CH2)p—R7 or forms together with R2 a —CH2—C(R9) (R10)—CH2— residue; R7 is perfluorinated C2-C20 aliphatic or alicyclic group; R8 is H, phenyl, benzyl, or a linear or branched C1-C12 aliphatic or alicyclic group; R9 is a H, benzoyl, acetyl or a C1-C5-alkyl group; R10 H or a —CO—O—R8; p is 1, 2, 3, or 4, provided that the compound of Formula (I) comprises at least one —CO—O—(CH2CH2)p—R7 residue; (B) at least one non-fluorinated vinylcyclopropane derivative; (C) a bisphenol-A-ether di(meth)acrylate according to Formula (II) wherein R18 is H or CH3, R19 is CH3 or CF3, Y is a C2-C5-alkylen residue which c

Abstract: Filler which is surface-modified with a compound of the formula [(PG)—R1—Z]n—SP—[Y—R2—(AG)]m, in which AG is —COOH, —P(?O)(OH)2, —O—P(?O)(OH)2, —SO2OH, —SiR3R4X, or a chelating group; R1 is a C1-C3 alkylene group or cyclopropylene group or is absent; R2 is a C1-C10 alkylene group or is absent; R3 is a C1-C8 alkyl group, chlorine or OR5; R4 is a C1-C8 alkyl group, phenyl, chlorine or OR5; R5 is a C1-C6 alkyl group; X is OR5 or chlorine; Y is O, S, CO—NH, O—CO—NH, NH—CO—NH or is absent, Y being absent if R2 is absent; Z is O, S, CO—NR6, O—CO—NH, NH—CO—NH or is absent, R6 being H or C1-C6 alkyl; PG is a radically polymerizable group of the formula in which R9 is H, C1-C3 alkyl, C1-C3 hydroxyalkyl or COOR10; R10 is H, C1-C10 alkyl, 1,6-dimethylphenyl or mesityl; R11 is H or phenyl; m is 1 or 2; n is 1, 2, 3 or 4; SP is absent or is an (n+m)-valent linear or branched aliphatic C1-C30 radical, in which the carbon chain can be interrupted by O, S, CO—NH, O—CO—NH or NH—CO—NH, an (n+m)-valent aromatic C6-C18 radic

Abstract: Dental material containing a cluster according to the general formula [(M1)a(M2)bOc(OH)d(OR)e(L-Sp-Z)f] (I) in which M1, M2, independently of each other, stand in each case for a metal atom of the IIIrd or Vth main groups or the Ist to VIIIth sub-groups of the periodic table; R is an alkyl group with 1 to 6 carbon atoms; L is a co-ordinating group with 2 to 6 complexing centres; Sp is a spacer group or is absent; Z is a polymerizable group; c is a number from 1 to 30; d, e, independently of each other, are in each case a number from 1 to 30; f is a number from 2 to 30, any charge of the cluster (I) present being equalized by counterions.

Abstract: Cyclopropyl acrylate of general formula (1), constitutional and stereoisomers thereof and their mixtures in which A is selected from: Y for A=A1 is absent, CH2 or 0, and for A=A2=CH2 or 0; n for Y is absent=0, 1, 2 or 3, and for Y=CH2 or 0=1; m for Y is absent=0, 1, 2 or 3, and for Y=CH2 or 0=1; r=1, 2, 3 or 4; R1=H, a C1 to C10 alkyl, C6 to C12 aryl, C1 to C10 arylalkyl or bicyclic C5-C12 radical or —R10—X—; R2=an aliphatic C1-C20 hydrocarbon radical, substituted r times by the expression in brackets, which can be interrupted by O or S, cycloaliphatic C4-C12 radical, bicyclic C5-C12 radical, a C6-C14 aryl or C7-C20 alkylaryl radical; R3=—CO—OR9, —CO—R9, —S(O)R9, SO2R9, —SO2(OR9), —PO(OR9)2, —CN, —H, —R9; R4=—CO—OR9, —CO—R9, —S(O)R9, —SO2R9, —SO2(OR9), —PO(OR9)2, —CN or —R11—R10—X—; R5-R8=independently of one another H, —CO—OR9, —CO—NHR9, —CO—NR92, —CO—R9, —CN, a C1-C20 alkyl radical which can be interrupted by O or S, a cycloaliphatic C4-C12 radical, a bicyclic C5-C12 radical, a C6-C14 aryl, C7-C20

Abstract: The invention relates to iminooxadiazine dione derivatives with the formula (I) in which X, Y and Z represent a (meth)acrylic acid radical of the formula (II) in which R1 is hydrogen, an aliphatic hydrocarbon radical with 1 to 14 carbon atoms, which can be interrupted by oxygen atoms, or an aromatic hydrocarbon radical with to 16 carbon atoms; R2 is hydrogen, an aliphatic hydrocarbon radical with 1 to 5 carbon atoms or an aromatic hydrocarbon radical with 6 carbon atoms, n is 1 or 2; where the (meth)acrylic acid radical of formula (II) is bound to the radical of formula (I) by R1 or R2 and the binding point remaining at R2 or R1 is saturated by hydrogen and X, Y and Z can be the same or different; the individual radicals R being able to be the same or different and selected from alicyclic or aromatic hydrocarbon radicals with 5 to 10 or aliphatic hydrocarbon radicals with 1 to 10 carbon atoms.

Abstract: Polymerizable dental material, characterized in that it contains at least one (meth)acrylamide phosphate of the following general formula (I): in which R1 is H or CH3; R2 is H or a C1-C4 alkyl radical or forms together with the nitrogen atom to which it is bonded and one or more atoms which belong to R3 or R3? a heterocyclic ring; R3, R3? independently of each other are a linear or branched aliphatic C1-C50 radical with a valency of m+n or p+n, an aromatic C6-C18 radical with a valency of m+n or p+n, or a cycloaliphatic, araliphatic or heterocyclic C3-C18 radical with a valency of m+n or p+n, wherein the carbon chains of the radical or radicals can be interrupted by O, S, CONR4, OCONH, or form together with one or more atoms which belong to R2 and the nitrogen atom, to which the R2 is bonded a heterocyclic ring, R3? being H if p=0, and R4 being H, C1-C10 alkyl, C6-C12 aryl, C6-C10 aralkyl or a bicylic C4-C12 radical; n is 1, 2, 3 or 4 if p=0, and is 1 or 2 if p?0; m is 1, 2, 3 or 4; p is 0, 1, 2, 3 or 4;

Abstract: Dental composition containing (i) at least one acid (meth)acrylamide monomer which has two or more polymerizable groups, (ii) at least one acid monomer which has only one polymerizable group and (iii) at least one polymerization initiator.

Abstract: Dental material being polymerizable by ring-opening metathesis polymerization comprising (i) at lest one ruthenium complex bearing at least one N-heterocyclic carbene ligand or precursors which generate a ruthenium complex bearing at least one N-heterocyclic carbene ligand in situ; and (ii) at least one cyclic olefin capable of metathesis.

Abstract: Dental material containing an amide of the general formula BXn in which B stands for a hydrocarbon radical with 1 to 5 carbon atoms, which can contain one or more of the groups O, S, NH, CO—NH, O—CO—NH and/or NH—CO—NH, and which is substituted n times with the group X, X stands for the group which is bound via the nitrogen atom or via C-2 to the radical B, the bond site not connected to B carrying a radical R2, R1 being hydrogen, an alkyl group with 1 to 20 carbon atoms or a phenyl radical, two or more radicals X being able to share a radical R1 and R1 also being able to be a constituent of the radical B, R2 being hydrogen, an alkyl group with 1 to 20 carbon atoms or a phenyl radical, and n being a number from 2 to 5.

Abstract: Dental materials which contain a radically polymerizable organic binder, at least one radical polymerization initiator and at least one radical polymerization accelerator, both the initiator and the accelerator each having at least one radically polymerizable group.

Abstract: A process for fabricating dental form pieces for dental restoration and replacement parts is provided and includes the step of applying a material, on a firm support or a fluid medium, by a three dimensional plotting technology in a layer by layer manner. The material has micro cords and/or micro drops which include at least one of a meltable, polymerizable, polycondensable, and polyaddable constituent element that is an unfilled monomer, a reinforced monomer, oligomer, polymer, or a ceramic element. The process also includes the step of hardening the applied material by cooling of the material, chemical reaction, polymerization with thermal handling, or polymerization by irradiation of the material with UV or visible light.

Abstract: Polymerizable materials which contain (1) 1 to 80 wt.-% of at least one polysiloxane, (2) 0.1 to 5 wt.-% of one or more initiators for radical polymerization, (3) 0 to 60 wt.-% of radically polymerizable monomer and (4) 1 to 50 wt.-% of one or more radically polymerizable monomers which carry at least phosphonic acid group, sulphonic acid group and/or mono- or dihydrogen phosphoric acid ester group, the polysiloxane (1), the monomer (3) or both being substituted by fluorine. The materials are suitable in particular for the coating of natural or artificial teeth.

Abstract: The invention relates to compositions, polymerizable by ring-opening metathesis, which contain (a) at least one monomer and/or oligomer which is polymerizable by ring-opening metathesis polymerization, (b) at least one filler and (c) at least one initiator for the ring-opening metathesis polymerization. The compositions are characterized in that the initiator is chemically or physically bound to the filler.

Abstract: Acrylic ester phosphonic acids of general formula (I), stereoisomers thereof and mixtures of these, wherein n is 1 or 2, on the condition that for n=1 R1 has the meaning and for n=2 R1 has the meaning R2 is a C1 to C12 alkylene radical, C4-C8 cycloalkylene radical or C7 to C15 alkylene phenylene radical; R3 is hydrogen, a C1 to C5 alkyl radical or a C1 to C5 O-alkyl radical; and R4, R5, independently of each other, each stand for a C1 to C5 alkyl radical or a C1 to C5 O-alkyl radical.

Abstract: Dental materials based on polymerizable binders, which contain at least one chromophoric xerogel of the formula I: (SiO2)a(SiO1.5-Sp-X-CG)(MenOm)b  (I) in which Me represents a main-group metal of the 2nd to 3rd main groups or a transition metal of the 4th sub-group of the periodic table of elements; n being equal to 1 or 2, m being equal to 1 or 2 if n is equal to 1 and m being equal to 3 if n is equal to 2; Sp is a C1 to C10 alkylene radical or C2 to C10 oxyalkylene radical with 1 to 4 oxygen atoms or is absent; X is a compound group, such as CO—O, O—CO, CO—NH, NH—CO, O—CO—NH, NH—CO—O, NR, O or S or is absent, R being hydrogen or a C1 to C5 alkyl radical; CG is a chromophore; a is an integer from 0 to 20 and b is an integer from 0 to 5.