The present invention provides a dental mill blank that exhibits desirable resistance against wear in opposing teeth. The present invention relates to a dental mill blank comprising: an inorganic filler containing an inorganic filler (A) and an inorganic filler (B); and a polymer, the inorganic filler (A) partly forming an aggregate, and the dental mill blank satisfying the following formulae (I) to (III),
0.001≤a<0.32  (I)
0.3≤b≤10  (II)
5≤x≤80  (III),
where a is an average primary particle diameter of the inorganic filler (A) in micrometers, b is an average primary particle diameter of the inorganic filler (B) in micrometers, and x is an average particle diameter of the aggregate in micrometers. Preferably, the dental mill blank comprises an island component containing the aggregate, and a sea component containing the inorganic filler (A) and the inorganic filler (B).

The present disclosure provides a photopolymerizable composition. The photopolymerizable composition includes a) 40-60 parts by weight of a monofunctional (meth)acrylate monomer, per 100 parts of the total photopolymerizable composition; b) a photoinitiator; and c) a polymerization reaction product of components. A cured homopolymer of the monofunctional (meth)acrylate monomer has a glass transition temperature of 125 degrees Celsius or greater. The polymerization reaction product of components includes i) a diisocyanate; ii) a hydroxy functional methacrylate; iii) a polycarbonate diol; and iv) a catalyst. The polymerization reaction product includes a polyurethane methacrylate polymer. Often, the polyurethane methacrylate polymer has a weight average molecular weight of 8,000 g/mol or greater. The present disclosure further provides an article and methods thereof.

The present disclosure provides a photopolymerizable composition. The photopolymerizable composition includes a) 40-60 parts by weight of a monofunctional (meth)acrylate monomer, per 100 parts of the total photopolymerizable composition; b) a photoinitiator; and c) a polymerization reaction product of components. A cured homopolymer of the monofunctional (meth)acrylate monomer has a glass transition temperature of 125 degrees Celsius or greater. The polymerization reaction product of components includes i) a diisocyanate; ii) a hydroxy functional methacrylate; iii) a polycarbonate diol; and iv) a catalyst. The polymerization reaction product includes a polyurethane methacrylate polymer. Often, the polyurethane methacrylate polymer has a weight average molecular weight of 8,000 g/mol or greater. The present disclosure further provides an article and methods thereof.

The present invention is related to a dental composition comprising at least one polymerizable monomer having at least one ethylenically unsaturated group; and a radical initiator system comprising a photosensitizer haying an absorption maximum ranging from 400 nm to 800 nm; and at least one CH-acidic compound as coinitiator.

The present invention is related to a dental composition comprising at least one polymerizable monomer having at least one ethylenically unsaturated group; and a radical initiator system comprising a photosensitizer haying an absorption maximum ranging from 400 nm to 800 nm; and at least one CH-acidic compound as coinitiator.

Cumene hydroperoxide oligomer according to Formula (I):

##STR00001##

in which OLIGOMER is a homo- or copolymer chain, which is substituted n times by the group which is in brackets; Q is absent or is a divalent aromatic C.sub.6-C.sub.14 hydrocarbon radical or an aliphatic, linear or branched C.sub.1-C.sub.14 hydrocarbon radical, which can be interrupted by one or more S and/or O atoms and/or —O—CO—NR.sup.1— and which can be substituted by one or more substituents; X, Y independently of each other in each case are absent, —O—, —COO—; —CONR.sup.3— or —O—CO—NR.sup.4—, wherein X is absent if Q is absent, and wherein the substitution on the aromatic compound is effected in position 2, 3 or 4 relative to the cumene hydroperoxide group; and n is a value from 1 to 50.

Cumene hydroperoxide oligomer according to Formula (I):

##STR00001##

in which OLIGOMER is a homo- or copolymer chain, which is substituted n times by the group which is in brackets; Q is absent or is a divalent aromatic C.sub.6-C.sub.14 hydrocarbon radical or an aliphatic, linear or branched C.sub.1-C.sub.14 hydrocarbon radical, which can be interrupted by one or more S and/or O atoms and/or —O—CO—NR.sup.1— and which can be substituted by one or more substituents; X, Y independently of each other in each case are absent, —O—, —COO—; —CONR.sup.3— or —O—CO—NR.sup.4—, wherein X is absent if Q is absent, and wherein the substitution on the aromatic compound is effected in position 2, 3 or 4 relative to the cumene hydroperoxide group; and n is a value from 1 to 50.

Described is a milling blank for producing an indirect dental restoration, composed of resin or a resin-based composite, containing water in an amount of at least 25% of the water sorption W.sub.sp. Described is further a method for producing such a milling blank or a moulded part produced therefrom for use as an indirect dental restoration, a use of the water sorption method, a kit for producing indirect dental restorations and a method for indirect dental restoration.

Described is a milling blank for producing an indirect dental restoration, composed of resin or a resin-based composite, containing water in an amount of at least 25% of the water sorption W.sub.sp. Described is further a method for producing such a milling blank or a moulded part produced therefrom for use as an indirect dental restoration, a use of the water sorption method, a kit for producing indirect dental restorations and a method for indirect dental restoration.

Compositions and methods for inhibiting and interrupting biofilm formation, and for destabilizing established biofilms are provided, the novel compositions including polymeric resins and monomeric non-polymerizable and polymerizable resins. More particularly, the compositions and methods enable the protection and removal of biofilms from surfaces in the context of medical, consumer, domestic, food service, environmental and industrial applications, where the effects constitute beneficial and desirable biofilm attenuating activity.