Back to results
US 6,444,597 B1Granted
Dental paste-like porcelain
AssigneeTakahiro Sato
InventorsTakahiro Sato, Keisuke Ikushima
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeTakahiro Sato
InventorsTakahiro Sato, Keisuke Ikushima
Estimating the term…
A dental paste-like porcelain is disclosed, including a mixture in a paste-like state of from 7 to 45 parts by weight of a binder comprising a synthetic and/or natural, hydrophilic group-containing polymeric material dissolved in one or two or more organic solvents selected from a dihydric or trihydric alcohol, a hydroxyl group-remaining ether and a hydroxy(meth) acrylate, and/or water and having a viscosity, as measured at a constant temperature of 23° C. and at a conversion constant of 1.61×104 under the conditions that a revolution number is 1 rpm, of from 50,000 to 1,500,000 cps, andaporcelain powder as a remainder, with a total amount being 100 parts by weight. The dental paste-like porcelain according to the invention does not require a condensation procedure. Accordingly, even a beginner can easily carry out the porcelain application of prostheses over a wide range including from a single crown to a bridge, without necessity of the skill. Further, since the dental paste-like porcelain of the present invention is a paste having no porosity incorporated therein and is stable during the present preservation over a long period of time. Moreover, it is hardly dried and hardened during the use and enables to grasp the shade.
A dental porcelain paste comprising a mixture in a paste-like state of from 7 to 45 parts by weight of a binder comprising a synthetic and/or natural, hydrophilic group-containing polymeric material dissolved in at least one solvent selected from the group consisting of a dihydric alcohol, a trihydric alcohol, a hydroxyl group-containing ether, a hydroxy(meth)acrylate water and mixtures thereof, and having a viscosity, as measured at a constant temperature of 23° C. and at a conversion constant of 1.61×104 under the conditions that a revolution number is 1 rpm, of from 50,000 to 1,500,000 cps, and a porcelain powder as a remainder, with a total amount being 100 parts by weight.
A dental porcelain paste comprising a mixture of from 7 to 45 parts by weight of a binder comprising a synthetic and/or natural, hydrophilic group-containing polymeric material dissolved in a solvent selected from the group consisting of a dihydric alcohol, a trihydric alcohol, a hydroxyl group-containing ether, a hydroxy(meth)acrylate, water and mixtures thereof, said binder having a viscosity, as measured at a constant temperature of 23° C. and at a conversion constant of 1.61×104 under the conditions that a revolution number is 1 rpm, of from 50,000 to 1,500,000 cps, and a porcelain powder as a remainder, with a total amount being 100 parts by weight, and from 0.1 to 5 parts by weight of at least one additive selected from the group consisting of a dispersant, a surfactant, a humectant, an antiseptic, an anti-foaming agent, a lubricant and mixtures thereof,
Dependencies are inferred from the claim text.