The invention relates to a curable dental composition comprising a cationically hardenable compound (A) comprising at least two aziridine moieties, a starter (B) being suitable to cure the hardenable compound (A), polymeric particles as filler component (C), the polymeric particles having a maximum particle size of 150 m or below and the component(s) the polymeric particles are made of being based on fluoropolymers comprising more than 99% monomer repeating units of tetra fluoro ethylene. The invention also relates to the use of such composition for producing a dental impression material or a dental retraction material.

The present application is directed to a curable composition and a method for isolating a working area in a patient's mouth. The curable composition can include a borate-crosslinked polysiloxane, at least one ethylenically unsaturated monomer comprising at least two polymerizable groups, and an initiator.

The present application is directed to a curable composition and a method for isolating a working area in a patient's mouth. The curable composition can include a borate-crosslinked polysiloxane, at least one ethylenically unsaturated monomer comprising at least two polymerizable groups, and an initiator.

The present application is directed to a curable composition and a method for isolating a working area in a patient's mouth. The curable composition can include a borate-crosslinked polysiloxane, at least one ethylenically unsaturated monomer comprising at least two polymerizable groups, and an initiator.

The invention relates to a method for the preparation of a lithium silicate glass or a lithium silicate glass ceramic which comprise cerium ions and are suitable in particular for the preparation of dental restorations, the fluorescence properties of which largely correspond to those of natural teeth. The invention also relates to a lithium silicate glass and a lithium silicate glass ceramic which can be obtained using the method according to the invention, the use thereof as dental material and in particular for the preparation of dental restorations, as well as a glass-forming composition which is suitable for use in the method according to the invention.

The invention relates to a method for the preparation of a lithium silicate glass or a lithium silicate glass ceramic which comprise cerium ions and are suitable in particular for the preparation of dental restorations, the fluorescence properties of which largely correspond to those of natural teeth. The invention also relates to a lithium silicate glass and a lithium silicate glass ceramic which can be obtained using the method according to the invention, the use thereof as dental material and in particular for the preparation of dental restorations, as well as a glass-forming composition which is suitable for use in the method according to the invention.

Simultaneously retracting gingiva and taking an impression around a tooth with two different materials having different setting properties with different viscosities or rigidity. A supportive material having a higher viscosity or rigidity relevant to an impression material is used in combination with a rigid tray to retract gingiva and form an impression of and around a tooth. The timing of the application of pressure to the tray when placed over a tooth containing the two different materials is such that pressure is only applied when the supportive material has a state of cure or setting state with a viscosity or rigidity greater than the state of cure or setting state of the impression material.

The invention relates to a curable composition comprising a resin matrix, the resin matrix comprising cationically curable components (A) and radiation curable components (B), a curing system, the curing system comprising a starter (A-S) suitable for curing the cationically curable components (A) and a photo-initiator (B-I), the curable composition being provided as a Base Part and Catalyst Part being separated before use, wherein the Base Part comprises components (A) and (B) and wherein the Catalyst Part comprises components (A-S) and (B-I). The composition can be used for taking a dental impression including the subgingival parts.

The invention relates to a curable composition comprising a resin matrix, the resin matrix comprising cationically curable components (A) and radiation curable components (B), a curing system, the curing system comprising a starter (A-S) suitable for curing the cationically curable components (A) and a photo-initiator (B-I), the curable composition being provided as a Base Part and Catalyst Part being separated before use, wherein the Base Part comprises components (A) and (B) and wherein the Catalyst Part comprises components (A-S) and (B-I). The composition can be used for taking a dental impression including the subgingival parts.

The invention relates to a dental retraction composition comprising guanidinyl-containing polymer, carrageenan, filler, paste-forming component, organic acid having a molecular weight of 80 to 250 g/mol, a pks value of 2 to 5, 1 to 3 carboxylic acid moieties, and being soluble in polyethylene glycol with a molecular weight of 400 g/mol, the dental retraction composition not containing water in an amount of more than 5 wt. %, and not containing aluminium chloride in an amount of more than 0.5 wt. %, wt. % with respect to the weight of the dental retraction composition. The dental retraction composition is for use in a process for use in a process of retracting dental tissue in combination with coagulating blood. The invention also relates to a delivery device comprising the dental retraction composition and a kit of parts comprising the delivery device, an applier for the delivery device, optionally a dental impression material, and optionally a retraction cap.