Sealer composition for root canal filling

Patent metadata

Field	Value
Publication number	US-10463581-B2
Application number	US-201715432004-A
Country	US
Kind code	B2
Filing date	Feb 14, 2017
Priority date	Feb 15, 2016
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

To provide a sealer composition for root canal filling consisting of a liquid material containing a polymer (a) of an acid group-containing polymerizable monomer in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal and water (b), wherein the pH of the liquid material is in the range from 3.5 to 5.5, and a powder material containing an acid reactive inorganic powder (c), wherein, a cured product of a kneaded material of the liquid material and the powder material comprises 3 to 20 part by weight of the polymer (a), 10 to 60 part by weight of the water (b), and 30 to 85 part by weight of the acid reactive inorganic powder (c).

First claim

What is claimed is:

1. A sealer composition for root canal filling, wherein, the sealer composition for root canal filling consisting of;
a liquid material containing a polymer (a) of an acid group-containing polymerizable monomer in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal and water (b), wherein the pH of the liquid material is in the range from 3.5 to 5.5, and
a powder material containing an acid reactive inorganic powder (c), wherein,
a cured product of a kneaded material of the liquid material and the powder material comprises 3 to 20 part by weight of the polymer (a) of an acid group-containing polymerizable monomer in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal, 10 to 60 part by weight of the water (b), and 30 to 85 part by weight of the acid reactive inorganic powder (c), and
the acid reactive inorganic powder (c) contains zinc oxide, and 5 to 40 part by weight of an acid-reactive element-containing glass powder for the whole amount of the acid reactive inorganic powder (c).

2. The sealer composition for root canal filling according to claim 1 , wherein,
the polymer (a) of an acid group-containing polymerizable monomer in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal is a polymer of α-β unsaturated carboxylic acid in which a portion or the entirety of the acidic group in a molecule forms a salt with an alkaline metal.

3. The sealer composition for root canal filling according to claim 1 , wherein,
an operation surplus time at 23° C. is 10 minutes or more.

4. The sealer composition for root canal filling according to claim 2 , wherein,
an operation surplus time at 23° C. is 10 minutes or more.

Assignees

• Shofu Inc

Inventors

• Sakamoto Shuji
• Kimoto Katsuya
• Nakatsuka Toshiyuki

Classifications

• A61K6/71 Primary

  Fillers · CPC title

• A61K6/889 Primary

  Polycarboxylate cements; Glass ionomer cements · CPC title

• A61K6/77

  Glass · CPC title

• A61K6/54

  Filling; Sealing · CPC title

• A61K6/0835 Primary

  Human Necessities · mapped topic