Thermally responsive compositions that include a thermally responsive viscosity modifier, a polymerizable component, and water are provided. The compositions, which optionally may be hardened, are useful for application to a surface of a body.
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1. A method of hardening a composition on a surface comprising: applying a thermally responsive composition in a low viscosity state at a pre-treatment temperature to the surface, the composition comprising a thermally responsive viscosity modifier selected from the group consisting of a poly(oxyeth
1. A method of hardening a composition on a surface comprising: applying a thermally responsive composition in a low viscosity state at a pre-treatment temperature to the surface, the composition comprising a thermally responsive viscosity modifier selected from the group consisting of a poly(oxyethylene)-poly(oxypropylene) block copolymer and a poly(N-alkyl(meth)acrylamide)polymer; a polymerizable component different than the modifier; and water;allowing the composition to warm to a treatment temperature and increase in viscosity to a highly viscous thermally reversible state; andinducing the polymerizable component of the composition in the highly viscous thermally reversible state to polymerize and harden the composition, rendering the composition thermally irreversible. 2. The method of claim 1 wherein the surface is the surface of a body. 3. The method of claim 1 wherein the surface is an oral surface. 4. The method of claim 1 wherein inducing polymerization comprises irradiating the composition. 5. The method of claim 1 wherein inducing polymerization comprises irradiating the composition with visible or ultraviolet light. 6. The method of claim 1 wherein inducing polymerization comprises introducing one or more additional components. 7. The method of claim 1 wherein the composition further comprises an initiator. 8. The method of claim 7 wherein the initiator is a photoinitiator. 9. The method of claim 7 wherein the initiator is a free radical inititator. 10. The method of claim 1 wherein the composition further comprises an oxidizing agent and a reducing agent. 11. The method of claim 2 wherein the body is a human body. 12. The method of claim 1 wherein the thermally responsive composition further comprises an additive. 13. The method of claim 12 wherein the additive is selected from the group consisting of fluoride sources, whitening agents, anticaries agents, remineralizing agents, enzymes, breath fresheners, anesthetics, clotting agents, acid neutralizers, chemotherapeutic agents, immune response modifiers, medicaments, indicators, dyes, pigments, wetting agents, surfactants, buffering agents, viscosity modifiers, thixotropes, fillers, polyols, antimicrobial agents, antifungal agents, stabilizers, agents for treating xerostomia, desensitizers, and combinations thereof. 14. The method of claim 12 wherein the additive is a whitening agent selected from the group consisting of a hypochlorite, a peroxide, a peracid, and combinations thereof. 15. The method of claim 1 wherein applying the composition comprises delivering the composition through an orifice. 16. The method of claim 15 wherein the orifice is the orifice of a syringe. 17. The method of claim 1 wherein applying the composition is selected from the group consisting of painting the composition, brushing the composition, syringing the composition, misting the composition, spraying the composition, applying a substrate having the composition thereon, and combinations thereof. 18. The method of claim 1 wherein the thermally responsive composition comprises two or more parts, and wherein applying the composition comprises combining the two or more parts. 19. The method of claim 18 wherein combining comprises using a static mixing device. 20. The method of claim 1 wherein the viscosity of the composition at the treatment temperature, before inducing the polymerizable component to polymerize, is at least 5 times the viscosity of the composition at the pre-treatment temperature. 21. The method of claim 1 wherein the viscosity of the composition at the treatment temperature, after inducing the polymerizable component to polymerize, is at least 10 times the viscosity of the composition at the pre-treatment temperature. 22. The method of claim 1 wherein the pre-treatment temperature is at most room temperature. 23. The method of claim 1 wherein the treatment temperature is body temperature. 24. A method of hardening a composition on an oral surface of a body comprising: applying a thermally responsive composition in a low viscosity state at a pre-treatment temperature to the oral surface, the composition comprising a thermally responsive viscosity modifier selected from the group consisting of a poly(oxyethylene)-poly(oxypropylene) block copolymer and a poly(N-alkyl(meth)acrylamide) polymer; a polymerizable component different than the modifier; and water;allowing the composition to warm to a treatment temperature and increase in viscosity to a highly viscous thermally reversible state; andinducing the polymerizable component of the composition in the highly viscous thermally reversible state to polymerize and harden the composition, rendering the composition thermally irreversible. 25. The method of claim 24 wherein the oral surface is selected from the group consisting of bone, tooth, tongue, gingiva, throat, and combinations thereof. 26. The method of claim 1 wherein the composition comprises at least 5% by weight of the thermally responsive viscosity modifier. 27. The method of claim 14 wherein the peroxide is selected from the group consisting of a hydroperoxide, hydrogen peroxide, carbamide peroxide, and combinations thereof.
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