Kit comprises: (A) a polymerizable composition for preparing a dental model; (B) a polymerizable composition for preparing a composite inlays; (C) a polymerizable composition for fixing a composite inlays in a cavity; (D) optionally a polymerizable composition for producing a bond between tooth substance and fixing cement; and (E) optionally an acid solution to etch the tooth structure. Kit comprises: (A) a polymerizable composition for preparing a dental model comprising either (a1) addition-crosslinking silicones or (a2) cationically curable polyether; a polymerizable composition for preparing a composite inlays comprising (b1) more than 75-95 wt.% of fillers, (b2) 3-25 wt.% of polymerizable monomers comprising carbosilanes and monomers and dental (meth)acrylate monomers curing via ring-opening metathesis polymerization, or monomer mixtures, (b3) one or more photoinitiator(s) and/or initiator(s) for the chemical curing and (b4) optionally one or more other(s) additive(s); (C) a polymerizable composition for fixing a composite inlays in the cavity comprising (c1) more than 40-80 wt.% of filler, (c2) 16.8-60 wt.% of one, two or more polymerizable monomers comprising carbosilanes and monomers and dental (meth)acrylate monomers curing via ring-opening metathesis polymerization, (c3) 0.1-10 wt.% of one or more photoinitiator(s) and/or initiator(s) for the chemical curing and (b4) optionally one or more other(s) additive(s), (c4) optionally one or more adhesive monomer(s), different from the (c2), containing a phosphoric acid residue, a diphosphonic acid residue, a phosphonic acid residue, a thiophosphoric acid residue or a sulfonic acid residue in a proportion of less than 35 wt.%, (c5) polymerization inhibitors and (c6) less than 3 wt.% of additives; (D) optionally a polymerizable composition for producing a bond between tooth substance and fixing cement comprising (d1) one or more adhesive monomer(s), preferably light-polymerizable adhesive monomers containing a phosphoric acid residue, a diphosphonic acid residue, a phosphonic acid residue, a thiophosphoric acid residue or a sulfonic acid residue, (d2) monomers, which are different from the component (d1) and are copolymerizable with component (d1), preferably photopolymerizable monomers, (d3) one or more fillers, preferably one or more nano-scale fillers, (d4) one or more photoinitiator(s) and/or initiator(s) for the chemical curing, (d5) polymerization inhibitors, (d6) optionally solvent and (d7) optionally additive; and (E) optionally an acid solution to etch the tooth structure. Non blasted, non-silanized, non-etched, non-primed and non-roughened composite inlays, obtained by curing the polymerizable composition for preparing composite inlays before gluing into the tooth cavity, have completely polymerized surfaces. The deformation under pressure of the polymerizable composition for producing a denture model, measured according to ISO 4823, is maximum 3.5%. A polymerization shrinkage of the polymerizable composition for producing the composite inlays, measured according to the bonded disk method, is maximum 2%. An adhesive force between the composite inlays and the fixing cement, measured by VOCO test method, is at least 8 MPa. An independent claim is included for producing composite inlays, comprising pouring an impression of a tooth cavity with the polymerizable composition for producing the denture model, polymerizing the polymerizable composition for producing the denture model, applying the polymerizable composition for the production of the composite inlays, where the teeth model is formed by the polymerizable composition for producing the denture model, molding the polymerizable composition for producing the composite inlays in the form of inlays, which fill the moldable dental cavity, optionally repeating the depositing, molding and polymerizing the polymerizable composition for producing the composite inlays, when a layerwise building the inlay is to be made, removing the polymerized composite inlays made from the teeth model, removing the inhibition or incompletely polymerized layers of the composite inlays by wiping, and applying alcohol or alcoholic or aqueous disinfectant solutions.