To provide a sealer composition for root canal filling consisting of a liquid material containing a polymer (a) of an acid group-containing polymerizable monomer in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal and water (b), wherein the pH of the liquid material is in the range from 3.5 to 5.5, and a powder material containing an acid reactive inorganic powder (c), wherein, a cured product of a kneaded material of the liquid material and the powder material comprises 3 to 20 part by weight of the polymer (a), 10 to 60 part by weight of the water (b), and 30 to 85 part by weight of the acid reactive inorganic powder (c).

To provide an organic-inorganic composite filler containing; a polymerizable monomer (a) having at least one functional group selected from the group consisting of —OH group, —NH— group, and —NH.sub.2 group, a polymerizable monomer (b) having no functional group selected from the group consisting of —OH group, —NH— group, and —NH.sub.2 group, a polymerization initiator (c), an inorganic filler (d), and a silane compound (e) which generates —OH group by hydrolysis.

A method of using a dental filler is disclosed. The method may include securing a prosthetic to a dental implant, the prosthetic having an access channel therethrough. The method may also include filling a portion of the access channel by inserting a polytetrafluoroethylene dental plug into the access channel and compressing the polytetrafluoroethylene dental plug within the access channel.

Addition-fragmentation oligomers of the general formula Z—B.sub.y-A-(B-A).sub.x-B-A-B.sub.y—Z, where the A monomers units are derived from a diester or diacid, the B monomer units are derived from a difunctional monomer having functional groups co-reactive with the acid or ester groups of the A monomer, x+y is zero to 60, Z comprises an ethylenically unsaturated, polymerizable group, A monomers comprise a 1-methylene-3,3-dimethylpropyl group, and at least one B monomer unit comprises a high refractive index group.

Radically polymerizable dental material which contains (a) at least one polyfunctional radically polymerizable monomer, (b) at least one further radically polymerizable monomer which can be monofunctional or polyfunctional, (c) at least one photoinitiator for the radical polymerization and (d) at least one filler. The material is characterized in that the mixture of the monomers (a) and (b) has a refractive index of from 1.50 to 1.70 and in that the refractive index of the monomer mixture before the curing corresponds to the refractive index of the filler used or is higher by up to 0.013 and after the curing is higher than the refractive index of the filler by at least 0.02.

Dental materials may be made from polyhydric phenols that are non-genotoxic and exhibit estrogenic activity less than that of bisphenol S, while exhibiting properties such as strength and flexibility comparable to those of conventional BPA-derived dental materials.

Provided are a dispersion of a nanoparticulate mixed oxide of SiO.sub.2 with at least one further metal oxide in a matrix monomer, methods for preparing such a dispersion, a dental composite producible by curing such a dispersion, and uses of the dispersion as a precursor for dental composites.

The present invention relates to a kit of parts comprising Part A and Part B, Part A comprising: ascorbic acid, component(s) comprising an ascorbic acid moiety or derivative(s) thereof, optionally polymerizable component(s) without acidic moieties, optionally polymerizable component(s) with acidic moieties, and optionally filler(s), Part B comprising polymerizable component(s) without acidic moieties, polymerizable component(s) with acidic moieties, transition metal component(s), organic peroxide(s), and optionally filler(s), The invention is also directed to a redox initiator system comprising ascorbic acid, component(s) comprising an ascorbic acid moiety or derivative(s) thereof, transition metal component(s), preferably comprising a copper or iron ion containing salt, organic peroxide(s), preferably comprising a hydroperoxide or di-peroxide. The kit of parts and redox initiator system are particularly useful in the dental field.

Described herein is a dental filler material having a core made of a core material and a shell made of a shell material, where the shell material coats or covers at least a portion of the core.

The invention provides a light-curable dental material comprising a polymerizable compound having at least one ethylenically unsaturated bond and a hexaaryl bisimidazole as a photopolymerisation initiator.