The invention relates to a radically polymerizable dental material having photochromic properties, which contains at least one compound of formula (I) and optionally radically polymerizable monomers, an initiator for radical polymerization and other components.

Light emitting dental composites are fluorescing composite resins that are produced by combining one or more dental composites, such as, conventional dental composites, glass ionomer cements, resin modified glass ionomers, and/or bioactive dental composites, in either bulk fill form or flowable form, with a light energized and light emitting strontium aluminate or similar compound to form a light emitting dental composite. The light emitting dental composite makes composite resins easily identifiable when activated by a UV light source, allowing for use preferably with temporary placement, visualization, and/or removal of orthodontic attachments and restorative dentistry.

Light emitting dental composites are fluorescing composite resins that are produced by combining one or more dental composites, such as, conventional dental composites, glass ionomer cements, resin modified glass ionomers, and/or bioactive dental composites, in either bulk fill form or flowable form, with a light energized and light emitting strontium aluminate or similar compound to form a light emitting dental composite. The light emitting dental composite makes composite resins easily identifiable when activated by a UV light source, allowing for use preferably with temporary placement, visualization, and/or removal of orthodontic attachments and restorative dentistry.

One embodiment of the present invention relates to a dental composition including a (meth)acrylate, an ultraviolet absorber, and a fluorescent agent, wherein the ultraviolet absorber has free of a maximum absorption wavelength in a range of greater than 320 nm and less than or equal to 500 nm.

One embodiment of the present invention relates to a dental composition including a (meth)acrylate, an ultraviolet absorber, and a fluorescent agent, wherein the ultraviolet absorber has free of a maximum absorption wavelength in a range of greater than 320 nm and less than or equal to 500 nm.

A method of removing a dental adhesive may comprise locating the position of the dental adhesive, directing radiant energy into the dental adhesive causing the dental adhesive to weaken a bond formed with the dental adhesive, and breaking the bond by applying a suitable force to overcome the weakened bond. A dental adhesive may comprise a polymer and a dye or pigment, The dental adhesive may be formulated to cure to form a bond that is weakened in response to the dye or pigment absorbing radiant energy subsequent to curing.

The present invention relates to a kit of parts for detection and removal of carious dentin tissue comprising: (i) one or more compounds being a hydrazine derivative, and (ii) means for chemical treatment of carious dentin tissue. Further, the invention concerns a preparation containing an active, caries-dissolving two-component liquid in the form of a first active, caries-dissolving component and a second component which reduces the aggressiveness of the active component to mucous membranes, a viscosity increasing substance and one or more compounds being a hydrazine derivative. The hydrazine derivative labels carious dentin tissue selectively and substantially irreversibly in the presence of healthy dentin tissue, which is useful in the context of caries removal.

A method of removing a dental adhesive may comprise locating the position of the dental adhesive, directing radiant energy into the dental adhesive causing the dental adhesive to weaken a bond formed with the dental adhesive, and breaking the bond by applying a suitable force to overcome the weakened bond. A dental adhesive may comprise a polymer and a dye or pigment, The dental adhesive may be formulated to cure to form a bond that is weakened in response to the dye or pigment absorbing radiant energy subsequent to curing.