The invention relates to a system consisting of a laser which emits laser radiation with a wavelength of more than 1300 nm, in particular between 2750 nm and 3200 nm, and a dental adhesive for applying a dental restoration part to a pre-treated, in particular cleaned, adhesive base which is formed by hard dental tissue or by denture material. The viscous dental adhesive applied to the adhesive base, which is free of a dental restoration part, can be activated, in particular without blowing or agitation, by applying laser radiation.

Described herein are a polymerizable antibacterial nanogel and hydrolytically stable antibacterial nanogel composition and methods of preparing such compositions, use of polymerizable antibacterial nanogels and hydrolytically stable antibacterial nanogels as additives to a dental product, such as a resin monomer, a cement, an adhesive and composite formulations. Methods and compositions for forming hydrolytically stable antibacterial monomers are also described.

Described herein are a polymerizable antibacterial nanogel and hydrolytically stable antibacterial nanogel composition and methods of preparing such compositions, use of polymerizable antibacterial nanogels and hydrolytically stable antibacterial nanogels as additives to a dental product, such as a resin monomer, a cement, an adhesive and composite formulations. Methods and compositions for forming hydrolytically stable antibacterial monomers are also described.

A composite liquid agent package containing a first pouch filled with a first liquid and a second pouch filled with a second liquid; and a kit for preparing a multicomponent composition, the kit including an outer bag housing the composite liquid agent package. With an opposite end section of the first pouch and an opposite end section of the second pouch being superposed, the superposed parts are heated and pressurized to exclude sealants, which are present within the opposite end sections, outwardly of the extremities of the outer layers of the opposite end sections, while heat-fusing the two extruded sealants together to join the two pouches.

A composite liquid agent package containing a first pouch filled with a first liquid and a second pouch filled with a second liquid; and a kit for preparing a multicomponent composition, the kit including an outer bag housing the composite liquid agent package. With an opposite end section of the first pouch and an opposite end section of the second pouch being superposed, the superposed parts are heated and pressurized to exclude sealants, which are present within the opposite end sections, outwardly of the extremities of the outer layers of the opposite end sections, while heat-fusing the two extruded sealants together to join the two pouches.

A hygienically packaged composition that includes a base layer of a thermoplastic film, a covering film layer that is a heat sealable or pressure sealable adhesive liner that covers the hygienically packaged composition where the hygienically packaged composition is a dental composition, a food composition, or a medicine. The covering film layer includes a stretched dimple in a portion of the covering film layer proximate the hygienically packaged composition thereunder the covering film layer. There is typically a heat or pressure seal around each hygienically packaged composition.

Provided are adhesive monomers for dental materials including compounds represented by the general formula (1) below, in which the core (X) and the terminal group (Y1) are bonded to each other directly or via the linking group (Z): X(Y1)n.sup.1a(Z—Y1)n.sup.1b(1) wherein n.sup.1a represents the number of terminal groups (Y1) directly bonded to the core (X), n.sup.1b represents the number of terminal groups (Y1) bonded to the core (X) via the linking group (Z), and the sum of n.sup.1a and n.sup.1b is equal to the valence of the core (X); the core (X), the linking group (Z) and the terminal group (Y1) are further defined. The adhesive monomers can enhance adhesive strength to the tooth in dental treatment, and impart high mechanical strength to cured products.

Provided are adhesive monomers for dental materials including compounds represented by the general formula (1) below, in which the core (X) and the terminal group (Y1) are bonded to each other directly or via the linking group (Z): X(Y1)n.sup.1a(Z—Y1)n.sup.1b(1) wherein n.sup.1a represents the number of terminal groups (Y1) directly bonded to the core (X), n.sup.1b represents the number of terminal groups (Y1) bonded to the core (X) via the linking group (Z), and the sum of n.sup.1a and n.sup.1b is equal to the valence of the core (X); the core (X), the linking group (Z) and the terminal group (Y1) are further defined. The adhesive monomers can enhance adhesive strength to the tooth in dental treatment, and impart high mechanical strength to cured products.

Provided are adhesive monomers for dental materials including compounds represented by the general formula (1) below, in which the core (X) and the terminal group (Y1) are bonded to each other directly or via the linking group (Z): X(Y1)n.sup.1a(Z—Y1)n.sup.1b(1) wherein n.sup.1a represents the number of terminal groups (Y1) directly bonded to the core (X), n.sup.1b represents the number of terminal groups (Y1) bonded to the core (X) via the linking group (Z), and the sum of n.sup.1a and n.sup.1b is equal to the valence of the core (X); the core (X), the linking group (Z) and the terminal group (Y1) are further defined. The adhesive monomers can enhance adhesive strength to the tooth in dental treatment, and impart high mechanical strength to cured products.

To provide a resin cured body for dental cutting processing used for cutting and machining using a dental CAD/CAM system, wherein the resin cured body consists of the cured body of a composition comprising: (a) an inorganic filler containing 55 wt. % or more of an element belonging to group II and/or group XIII of the periodic table in terms of an oxide, (b) a polymerizable monomer, and (c) a polymerization initiator.