Multicomponent system for producing a dental material

1. A two-component or multicomponent system for producing a dental material, comprising:

a) a first component, comprising:

i) at least one radically polymerizable resin,

ii) at least one polymerization accelerator;

b) a second component, comprising:

iii) an inert matrix which is pasty or liquid at room temperature, and/or at least one radically polymerizable resin,

iv) at least one CH-acidic compound and/or a salt of a CH-acidic compound, as polymerization initiator,

wherein the second component comprises at least one radically polymerizable resin only when the polymerization initiator according to iv) is a salt of a CH-acidic compound,

wherein the first and/or second component comprises at least one peroxide selected from the group consisting of perethers, peracetals, and perketals.

2. The system of claim 1 , wherein said system comprises 0.001% to 5% by weight of said at least one peroxide.

3. The system claim 1 , wherein said system comprises 0.01% to 3% by weight of said at least one peroxide.

4. The system of claim 1 , wherein said system comprises 0.02% to 2% by weight of said at least one peroxide.

5. The system of claim 1 , wherein said system comprises 0.02% to 1.5% by weight of said at least one peroxide.

6. The system of claim 1 , wherein said system comprises 0.03% to 1.0% by weight of said at least one peroxide.

7. The system of claim 1 , wherein said peroxide is present in said second component.

8. The system of claim 1 , wherein said system comprises at least one perketal.

9. The system of claim 1 , wherein the 10 h half-life temperature (T 1/2 (10 h)) of said at least one peroxide is at least 75° C.

10. The system of claim 1 , wherein the 10 h half-life temperature (T 1/2 (10 h)) of said at least one peroxide is at least 80° C.

11. The system of claim 1 , wherein said CH-acidic compound is selected from the group consisting of α-benzoylpropionitriles, α-cyanocarboxylic esters and amides, cyclic β-oxonitriles, β-diketones, cyclic β-diketones, cyclic β-oxocarboxylic esters, and cyclic β-oxolactones, and malonic acids, malonylsulfamide, pyrazoles, pyrazolone, pyrazolidine, barbituric acids, barbituric acid derivatives, thiobarbituric acids, thiobarbituric acid derivatives, and salts thereof.

12. The system of claim 11 , wherein said salts of said CH-acidic compounds are selected from the group consisting of alkaline earth metal salts and alkali metal salts.

13. The system of claim 11 , wherein said salts of said CH-acidic compounds are selected from the group consisting of partly or fully alkylated or arylated or mixedly alkylated or arylated ammonium or phosphonium salts.

14. The system of claim 1 , wherein said polymerization accelerator comprises metal compounds that are soluble in the resin and that comprise transition metal ions capable of a change in oxidation state.

15. The system of claim 1 , wherein said system further comprises ionic compounds.

16. The system of claim 15 , wherein said ionic compounds comprise ionic halide and/or pseudohalide compounds.

17. The system of claim 15 , wherein said ionic compounds are present in said first component.

18. The system of claim 1 , wherein said system further comprises a photoinitiator system.

19. The system of claim 1 , wherein said radically polymerizable resin comprises (meth)acrylates, di(meth)acrylates and/or more highly functionalized (meth)acrylates.

20. The system of claim 1 , wherein said inert matrix comprises plasticizers.

21. The system of claim 20 , wherein said plasticizers comprise one or more of polyethylene glycol derivatives, polyethylene oxide, 2,2-bis[4-[oligo(ethoxy)]-phenyl]propane diacetate, 2,2-bis[4-[2-hydroxyethoxy]phenyl]propane diacetate; polypropylene glycol derivatives; other polyethers and oligoethers; polyesters; phthalic esters; silicone oils; or liquid paraffins.

22. The system of claim 1 , wherein said system further comprises dental additives selected from the group consisting of fillers, thixotropic agents, pigments, dryers, fluorescent dyes, active antibacterial ingredients, fluorides, and stabilizers.

23. A process for producing dental material, comprising:

a) providing a two component or multicomponent system comprising;

1) a first component, comprising:

i) at least one radically polymerizable resin, and

ii) at least one polymerization accelerator;

2) a second component, comprising:

iii) an inert matrix which is pasty or liquid at room temperature, and/or at least one radically polymerizable resin, and

iv) at least one CH-acidic compound and/or a salt of a CH-acidic compound, as polymerization initiator,

wherein the second component comprises at least one radically polymerizable resin only when the polymerization initiator according to iv) is a salt of a CH-acidic compound and wherein said first and/or said second component comprises at least one peroxide selected from the group consisting of perethers, peracetals, and perketals; and

b) combining said first component and said second component to produce a dental material.

24. The process of claim 23 , wherein said dental material is selected from the group consisting of filling materials, adhesives, core buildup materials, crown and bridge materials, temporary crown and bridge materials, and cements.

25. A kit for producing a dental material, comprising a two-component or multicomponent system of claim 1 in containers.

26. The kit of claim 25 , further comprising a mixing means.