Curable mixture comprising (a) one or more compound(s) of the structure Q - [ n - X] o which are not free-radically polymerizable during the curing with the constituents (b), wherein, here and hereinafter: - Q is a polyalicyclic structural element selected from the group consisting of bicyclic, tricyclic, tetracyclic, pentacyclic and hexacyclic hydrocarbyl rests, wherein one, two or more of the hydrogen atoms not substituted by Y n - X substituents in this polyalicyclic structural element Q are optionally replaced by alkyl groups, alkoxy groups, halogen atoms or trifluoromethyl groups; - Y is methylene (-CH 2 -); - n = 0 or 1; - X is -O-Z, -N- 2, -NH-Z, -O-C(=O)-Z, -C(=O)-O-Z, -O-C(=O)-NH-Z, -NH-C(=O)-O-Z, -NH-C(=O)-NH-Z, -C(=O)-NH-Z, -NH-C(=O)- Z, -C(=O)-N- 2, -N- -C(=O)-Z, -O-C(=O)-N -C(=O)-NH-Z, -NH-C(=O)-N -C(=O)-NH-Z, -N(C(=O)-NH-Z) 2, -C(=O)-N -C(=O)-NH-Z, -N(C(=O)-NH-Z)(C(=O)-Z), -N(C(=O)-NH-Z)(C(=O)-O-Z), wherein the bond arranged on the left in each formula is closer to the structural element Q and wherein X is selected such that Z has a minimum number of atoms, - Z is an organic radical having at least one carbon atom, and different Z may be different, - o = 2, 3, 4, as a plasticiser and (b) further constituents selected from the group consisting of (b-1) one or more different monomer(s), (b-2) one or more fillers, (b-3) one or more photoinitiator(s) and/or one or more initiator(s) for chemical curing, (b-4) one or more polymerization inhibitor(s) for use in a therapeutic method in the production of a dental material. (a) one or more compound(s) of the structure Q - [ n - X] o which are not free-radically polymerizable during the curing with the constituents (b), wherein, here and hereinafter: - Q is a polyalicyclic structural element selected from the group consisting of bicyclic, tricyclic, tetracyclic, pentacyclic and hexacyclic hydrocarbyl rests, wherein one, two or more of the hydrogen atoms not substituted by Y n - X substituents in this polyalicyclic structural element Q are optionally replaced by alkyl groups, alkoxy groups, halogen atoms or trifluoromethyl groups; - Y is methylene (-CH 2 -); - n = 0 or 1; - X is -O-Z, -N- 2, -NH-Z, -O-C(=O)-Z, -C(=O)-O-Z, -O-C(=O)-NH-Z, -NH-C(=O)-O-Z, -NH-C(=O)-NH-Z, -C(=O)-NH-Z, -NH-C(=O)- Z, -C(=O)-N- 2, -N- -C(=O)-Z, -O-C(=O)-N -C(=O)-NH-Z, -NH-C(=O)-N -C(=O)-NH-Z, -N(C(=O)-NH-Z) 2, -C(=O)-N -C(=O)-NH-Z, -N(C(=O)-NH-Z)(C(=O)-Z), -N(C(=O)-NH-Z)(C(=O)-O-Z), wherein the bond arranged on the left in each formula is closer to the structural element Q and wherein X is selected such that Z has a minimum number of atoms, - Z is an organic radical having at least one carbon atom, and different Z may be different, - o = 2, 3, 4, as a plasticiser and - Q is a polyalicyclic structural element selected from the group consisting of bicyclic, tricyclic, tetracyclic, pentacyclic and hexacyclic hydrocarbyl rests, wherein one, two or more of the hydrogen atoms not substituted by Y n - X substituents in this polyalicyclic structural element Q are optionally replaced by alkyl groups, alkoxy groups, halogen atoms or trifluoromethyl groups; - Y is methylene (-CH 2 -); - n = 0 or 1; - X is -O-Z, -N- 2, -NH-Z, -O-C(=O)-Z, -C(=O)-O-Z, -O-C(=O)-NH-Z, -NH-C(=O)-O-Z, -NH-C(=O)-NH-Z, -C(=O)-NH-Z, -NH-C(=O)- Z, -C(=O)-N- 2, -N- -C(=O)-Z, -O-C(=O)-N -C(=O)-NH-Z, -NH-C(=O)-N -C(=O)-NH-Z, -N(C(=O)-NH-Z) 2, -C(=O)-N -C(=O)-NH-Z, -N(C(=O)-NH-Z)(C(=O)-Z), -N(C(=O)-NH-Z)(C(=O)-O-Z), wherein the bond arranged on the left in each formula is closer to the structural element Q and wherein X is selected such that Z has a minimum number of atoms, - Z is an organic radical having at least one carbon atom, and different Z may be different, - o = 2, 3, 4, (b) further constituents selected from the group consisting of (b-1) one or more different monomer(s), (b-2) one or more fillers, (b-3) one or more photoinitiator(s) and/or one or more initiator(s) for chemical curing, (b-4) one or more polymerization inhibitor(s) for use in a therapeutic method in the production of a dental material. (b-1) one or more different monomer(s), (b-2) one or more fillers, (b-3) one or more photoinitiator(s) and/or one or more initiator(s) for chemical curing, (b-4) one or more polymerization inhibitor(s) for use in a therapeutic method in the production of a dental material.