Dental composition comprising a) carbosilane containing component comprising ▪ at least 1 Si - Aryl bond, ▪ at least 1 silicon atom, ▪ at least 2 Si-H functional moieties, ▪ no Si - Oxygen bond, b) unsaturated component, and/or epoxy component, c) initiator, d) optional filler, e) optionally component selected from modifiers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickeners, surfactants, odorous substances, diluting agent(s) and flavourings, wherein carbosilane containing component is represented by one of formulas,, or: [H b a Si] d -E-{Aryl-[Si a H b] n} m with independently selected from each other m= 1 n = 1 d ≥ 1 E = (cyclo)aliphatic moiety with alkadiyl being C 2 to C 13 wherein C and/or H atoms can be substituted by O, Br, Cl and Si atoms; {Aryl-[Si a H b] n} m with independently selected from each other m = 1 n = 2, 3, 4, 5 or 6; F-{Aryl-[Si a H b] n} m with independently selected from each other m= 2, 3 or 4 n= 1, 2, 3, 4, 5 or 6 F = (cyclo)aliphatic moiety with alkadiyl being C 0 to C 25 wherein C and/or H atoms can be substituted by O, Br, Cl, and Si atoms; G-{Aryl-[Si a H b] n} m with independently selected from each other m = 2, 3, 4 n= 1, 2, 3, 4, 5 or 6 G = (cyclo)aliphatic or aromatic or (cyclo)aliphatic aromatic or aromatic (cyclo)aliphatic moiety with diyl being C 1 to C 100, wherein C and/or H atoms can be substituted by O, Br, Cl, and Si atoms, wherein A = aliphatic or cycloaliphatic moiety with C 1 to C 6 or aromatic moiety with C 6 to C 14 Br = bromine atom C = carbon atom Cl = chlorine atom H = hydrogen atom O = oxygen atom Si = silicon atom Aryl = aromatic moiety with C 6 to C 14 a + b = 3 a= 0, 1, or 2 b= 1, 2, or 3 n = 1, 2, 3, 4, 5, or 6. a) carbosilane containing component comprising ▪ at least 1 Si - Aryl bond, ▪ at least 1 silicon atom, ▪ at least 2 Si-H functional moieties, ▪ no Si - Oxygen bond, ▪ at least 1 Si - Aryl bond, ▪ at least 1 silicon atom, ▪ at least 2 Si-H functional moieties, ▪ no Si - Oxygen bond, b) unsaturated component, and/or epoxy component, c) initiator, d) optional filler, e) optionally component selected from modifiers, dyes, pigments, thixotropic agents, flow improvers, polymeric thickeners, surfactants, odorous substances, diluting agent(s) and flavourings, wherein carbosilane containing component is represented by one of formulas,, or: [H b a Si] d -E-{Aryl-[Si a H b] n} m m= 1 n = 1 d ≥ 1 E = (cyclo)aliphatic moiety with alkadiyl being C 2 to C 13 wherein C and/or H atoms can be substituted by O, Br, Cl and Si atoms; {Aryl-[Si a H b] n} m m = 1 n = 2, 3, 4, 5 or 6; m= 2, 3 or 4 n= 1, 2, 3, 4, 5 or 6 F = (cyclo)aliphatic moiety with alkadiyl being C 0 to C 25 wherein C and/or H atoms can be substituted by O, Br, Cl, and Si atoms; m = 2, 3, 4 n= 1, 2, 3, 4, 5 or 6 G = (cyclo)aliphatic or aromatic or (cyclo)aliphatic aromatic or aromatic (cyclo)aliphatic moiety with diyl being C 1 to C 100, wherein C and/or H atoms can be substituted by O, Br, Cl, and Si atoms, A = aliphatic or cycloaliphatic moiety with C 1 to C 6 or aromatic moiety with C 6 to C 14 Br = bromine atom C = carbon atom Cl = chlorine atom H = hydrogen atom O = oxygen atom Si = silicon atom Aryl = aromatic moiety with C 6 to C 14 a + b = 3 a= 0, 1, or 2 b= 1, 2, or 3 n = 1, 2, 3, 4, 5, or 6.