Tooth restoration composition, structure and methods

Composition for restorative tooth structures, comprising a urethane polymer reaction product of a first side and a second side condensed and adhered in the shape of a tooth restoration structure against a natural tooth, said first side comprising an aromatic isocyanato reagent reacted simultaneously with said second side comprising a premix of an hydroxylated tertiary amine reagent and another polyol reagent, said premix reagents being differentially reactive with said isocyanato reagent.

Adhesive for adhering material to a natural tooth, said adhesive being free of vitreous filler and comprising a urethane polymer reaction product of a first side and a second side, said first side comprising an aromatic isocyanato reagent reacted under urethane polymer forming conditions simultaneously with each reagent of said second side comprising hydroxylated tertiary amine reagent and another polyol, and bonded to both said natural tooth and to said material.

Natural tooth restoration structure of a composition comprising interdispersed crystalline and noncrystalline portions of a urethane polymer formed by reaction of an aromatic isocyanato reagent under urethane polymer forming conditions simultaneously with an hydroxylated tertiary amine and another polyol which are differentially reactive therewith to form said crystalline and noncrystalline portions interdispersed and shaped into a structure against a natural tooth in adhering relation to conform to said natural tooth.

Method of enhancing the appearance and effectiveness of an acrylic dental composite, including superimposing onto exposed portions of said composite in the mouth, a surface layer comprising a urethane polymer reaction product formed on said acrylic dental composite on a natural tooth, said reaction product being formed by reaction of a first side comprising an isocyanato reagent simultaneously with a second side comprising a premix of an hydroxylated tertiary amine reagent and another polyol reagent, said premix reagents being differentially reactive with said isocyanato reagent in adhering relation.