Method of using dental composition
AssigneeKerr Corporation
InventorsXiangxu Chen, Xuejun Qian
Life of this patent
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Abstract
A method for temporarily widening a gingival sulcus is provided using an uncured composition comprising a polymerizable monomer having at least one ethylenically unsaturated group, a photo polymerization initiator, a fine inorganic powder, and an astringent. The uncured composition is inserted within a gingival sulcus to be widened, and the composition is thereafter irradiated in situ to polymerize the composition. The result is a rubbery material that is easily removable from the widened sulcus.
Claims22
A method for temporarily widening a gingival sulcus, the method comprising
- inserting an uncured composition within a gingival sulcus to be widened, the composition comprising:
- a polymerizable monomer having at least one ethylenically unsaturated group in an amount ranging from about 0.05 weight percent to about 80 weight percent,
- a photo polymerization initiator in an amount ranging from about 0.001 weight percent to about 5 weight percent,
- a fine inorganic powder in an amount ranging from about 0.1 weight percent to about 90 weight percent, and
- an astringent in an amount ranging from about 3 weight percent to about 40 weight percent with the proviso that the uncured composition is substantially free of iron (III),
- wherein the weight percents are based on the total weight of the uncured composition, and wherein the uncured composition has a viscosity that is higher than about 13,000 Pascals·second and is consistent with penetration into the uncured composition to a range of between about 0.05 mm to about 3 mm, inclusive, using ASTM D-5 with total weight of a plunger and needle of 50 grams, test duration of 10 seconds, and a sample size of 10 mm in diameter and 8 mm in depth;
- maintaining the uncured composition in the gingival sulcus from about one second to about fifteen minutes before curing;
- and
- photo curing the uncured composition to provide a cured composition having a cure depth of about 0.5 mm or greater, the method temporarily widening the gingival sulcus.
A method for temporarily widening a gingival sulcus, the method comprising:
- inserting an uncured composition within a gingival sulcus to be widened through a device with a needle, the uncured composition comprising:
- a polymerizable monomer having at least one ethylenically unsaturated group,
- a photo polymerization initiator,
- a fine inorganic powder, and
- an astringent in an amount ranging from about 3 weight percent to about 40 weight percent based on the total weight of the composition, wherein the astringent is an astringent agent selected from the group consisting of alums, aluminum chloride, aluminum sulfate, zinc chloride, zinc sulfate, epinephrine, tannins and combinations thereof with the proviso that the uncured composition is substantially free of iron (III), and
- wherein the uncured composition has a viscosity that is higher than about 13,000 Pascals·second and is consistent with penetration into the uncured composition to a range of between about 0.05 mm to about 3 mm, inclusive, using ASTM D-5 with total weight of a plunger and needle of 50 grams, test duration of 10 seconds, and a sample size of 10 mm in diameter and 8 mm in depth;
- maintaining the uncured composition in the gingival sulcus from about one second to about fifteen minutes before curing;
- and
- thereafter photo curing the uncured composition to provide a cured composition having a cure depth of about 0.5 mm or greater, wherein the cured composition is a rubbery material capable of being extended to an extra length of about 0.5% to about 300%, the method temporarily widening the gingival sulcus.
Dependencies are inferred from the claim text.