Abstract: The present application provides a glass composition comprising 10-50% by weight CaO, at least 15% and less than 50% by weight P2O5, less than 3% by weight Al2O3, less than 10% by weight Li2O, Na2O, and K2O combined, and 0-60% by weight of SrO, MgO, BaO, ZnO, or combinations thereof; dental compositions comprising the glass composition, and methods of making and using such dental compositions.

Abstract: The present application provides a glass composition comprising 10-50% by weight CaO, at least 15% and less than 50% by weight P2O5, less than 3% by weight Al2O3, less than 10% by weight Li2O, Na2O, and K2O combined, and 0-60% by weight of SrO, MgO, BaO, ZnO, or combinations thereof; dental compositions comprising the glass composition, and methods of making and using such dental compositions.

Abstract: The present application provides dental compositions, and methods of making and using dental compositions that include a calcium and phosphorus releasing glass. Such dental compositions can be useful for delivering ions to the oral environment.

Abstract: An orthodontic article and method of making the orthodontic article, where the orthodontic article includes a fine-grain ceramic bracket and a metal liner secured in an archwire slot of the bracket with a brazing alloy comprising silver, copper, and at least about 1.5% by weight titanium.

Abstract: An indirect bonding tray for orthodontic bonding procedures has moisture control structure that is located next to the patient's teeth when the tray is placed over the patient's dental arch. The moisture control structure tends to draw moisture away from the adhesive used to bond the appliances to the teeth. As a consequence, the probability that the resulting bond between the appliances and the teeth is adversely affected by the presence of moisture, blood or other fluids in the patient's mouth is decreased.

Abstract: The present application provides dental compositions, and methods of making and using dental compositions that include a calcium and phosphorus releasing glass. Such dental compositions can be useful for delivering ions to the oral environment.

Abstract: A multi-photon reactive composition comprises an ethylenically unsaturated liquid polysilazane precursor, a multi-functional thiol additive, a multi-ethylenically-unsaturated additive different from the polysilazane, and a multi-photon photocuring composition. The invention can be used to provide ceramic-based microstructures as, for example, high temperature resistant materials, including devices such as microcombustors, micro-heat-exchangers, sensor and actuator systems, microfluidic devices, and micro-optics systems that can be used independently or integrated into other systems.

Abstract: A multi-photon reactive composition comprises an ethylenically unsaturated liquid polysilazane precursor, a multi-functional thiol additive, a multi-ethylenically-unsaturated additive different from the polysilazane, and a multi-photon photocuring composition. The invention can be used to provide ceramic-based microstructures as, for example, high temperature resistant materials, including devices such as microcombustors, micro-heat-exchangers, sensor and actuator systems, microfluidic devices, and micro-optics systems that can be used independently or integrated into other systems.

Abstract: A photoreactive composition comprises (a) at least one reactive species that is capable of undergoing an acid- or radical-initiated chemical reaction; and (b) a photoinitiator system comprising photochemically-effective amounts of (1) at least one type of semiconductor nanoparticle quantum dot that has at least one electronic excited state that is accessible by absorption of two or more photons, and (2) a composition, different from said reactive species, that is capable of interacting with the excited state of the semiconductor nanoparticle quantum dot to form at least one reaction-initiating species.

Abstract: An orthodontic article and method of making the orthodontic article, where the orthodontic article includes a fine-grain ceramic bracket and a metal liner secured in an archwire slot of the bracket with a brazing alloy comprising silver, copper, and at least about 1.5% by weight titanium.

Abstract: A medical device, particularly an orthodontic element, that includes a surface having a polymeric film disposed thereon (e.g., a liner disposed in an archwire slot of an orthodontic bracket), wherein the film comprises a fluorinated polymer and a treated surface having an adhesive thereon.

Abstract: An indirect bonding tray for orthodontic bonding procedures has moisture control structure that is located next to the patient's teeth when the tray is placed over the patient's dental arch. The moisture control structure tends to draw moisture away from the adhesive used to bond the appliances to the teeth. As a consequence, the probability that the resulting bond between the appliances and the teeth is adversely affected by the presence of moisture, blood or other fluids in the patient's mouth is decreased.

Abstract: A nanocomposite precursor comprises a plurality of nanoparticles homogeneously dispersed in an organic binder precursor. The nanocomposite precursor is useful for forming a nanocomposite, suitable for use as a protective coating, wherein the plurality of nanoparticles is homogeneously dispersed in an organic binder. The nanoparticles comprise Ti/Sb mixed oxide nanoparticles containing a rutile-like crystalline phase, wherein the ensemble average rutile-like crystalline phase content of the Ti/Sb mixed oxide nanoparticles is at least 20 weight percent, and wherein the weight ratio of antimony to titanium in the Ti/Sb mixed oxide nanoparticles is in a range of from at least 0.42 up to and including 2.93.

Abstract: A single- or multi-photon reactive composition comprises a liquid polysilazane precursor, a multifunctional acrylate additive, and a single- or multi-photon photocuring composition. The invention can be used to provide ceramic-based microstructures as, for example, high temperature resistant materials, including devices such as microcombustors, micro-heat-exchangers, sensor and actuator systems, microfluidic devices, and micro-optics systems that can be used independently or integrated into other systems.

Abstract: Agglomerated nanoparticles including Ti/Sb mixed oxide nanoparticles having a rutile-like crystalline phase content of at least 20 weight percent, wherein the nanoparticles have at least one organic moiety bound to the nanoparticle surface, and wherein the weight ratio of antimony to titanium in the Ti/Sb mixed oxide nanoparticles is in a range of from at least 0.42 up to and including 2.93. The agglomerated nanoparticles are redispersible into a liguid vehicle.

Abstract: Nanocomposite hardcoats having smudge and abrasion resistant properties are disclosed. Latent reactive nanoparticles are contained within a binder phase to form a nanocomposite. When deprotected and treated with a reactive fluorochemical, nanoparticles present at the surface of the nanocomposite become permanently modified and impart smudge resistance. The nanocomposite hardcoats may optionally be supported on a primary substrate.

Abstract: A method of multiphoton photosensitizing comprises (a) providing a multiphoton-activatable, photoreactive composition comprising (1) at least one reactive species that is capable of undergoing an acid- or radical-initiated chemical reaction, and (2) a photoinitiator system comprising photochemically-effective amounts of (i) at least one type of semiconductor nanoparticle that has at least one electronic excited state that is accessible by absorption of two or more photons, and (ii) a composition that is capable of interacting with the excited state of the semiconductor nanoparticle to form at least one reaction-initiating species; and (b) irradiating the multiphoton-activatable, photoreactive composition with light sufficient to cause absorption of at least two photons, thereby inducing at least one acid- or radical-initiated chemical reaction where the composition is exposed to the light.

Abstract: Nanometer-sized particles comprise a mixed oxide of titanium and antimony and are characterized by rutile-like crystal phases. The particles are easily prepared by hydrothemal processing, and may be used as colloids, or in various compositions and articles.

Abstract: A method of multiphoton photosensitizing comprises

Abstract: A photoreactive composition comprises (a) at least one reactive species that is capable of undergoing an acid- or radical-initiated chemical reaction; and (b) a photoinitiator system comprising photochemically-effective amounts of (1) at least one type of semiconductor nanoparticle quantum dot that has at least one electronic excited state that is accessible by absorption of two or more photons, and (2) a composition, different from said reactive species, that is capable of interacting with the excited state of the semiconductor nanoparticle quantum dot to form at least one reaction-initiating species.