Paste-like composition for dental use, and method for producing the same

1:

• A paste-like composition for dental use, comprising a polymerizable monomer (A) and a filler (B),
• the filler (B) comprising a particulate filler (B-1) having an average primary particle diameter of 0.001 to 0.2 μm, and a filler (B-2) having an average primary particle diameter of more than 0.2 μm and 30 μm or less,
• the paste-like composition having a consistency of 15 to 40 mm,
• the particulate filler (B-1) having an average secondary particle diameter of 20 μm or less,
• wherein said paste-like composition for dental use is made by a method comprising:
• mixing the polymerizable monomer (A) and the particulate filler (B-1) having an average primary particle diameter of 0.001 to 0.2=m to obtain an intermediate paste;
• and
• additionally mixing the polymerizable monomer (A) with the intermediate paste to obtain a final paste as the paste-like composition for dental use,
• and wherein:
• polymerizable monomer (A) is at least one of a polymerizable monomer having a phosphoric acid group, a polymerizable monomer having a sulfonic acid group, a polymerizable monomer having a carboxylic acid group, a hydrophobic monofunctional polymerizable monomer having no acidic group, an aromatic bifunctional polymerizable monomer having no acidic group, an aliphatic bifunctional polymerizable monomer having no acidic group, and a tri- or higher-functional polymerizable monomer having no acidic group;
• the particulate filler (B-1) is not added to the intermediate paste during said additionally mixing to obtain the final paste;
• the intermediate paste has a consistency of 5 to 20 mm;
• and
• a content of polymerizable monomer (A) is 5 to 60 parts by mass relative to a total 100 parts by mass of the paste-like composition for dental use.