Dental composition and composite resin

Details Dental composition and composite resin Dental composition and composite resin

A - Human Necessities

61

K

A61K 6/08 (2006.01)

Patent

CA 2722661

The present invention provides a dental composition exhibiting both an excellent light diffusion property and excellent transparency, and having high mechanical strength and surface smoothness and gloss after polishing as a cured product and good handling properties as a paste. The present invention is a dental composition including: a polymerizable monomer (A); and an amorphous powder (B). The amorphous powder (B) has an average particle size of 1 to 20 µm, and includes silica-based fine particles and coatings of an oxide that cover the surfaces of the silica-based fine particles. The oxide contains a zirconium atom, a silicon atom, and an oxygen atom. The difference in refractive index between the cured product of the polymerizable monomer (A) and the amorphous powder (B) is 0.005 to 0.03.

L'invention concerne une composition dentaire qui présente une bonne exploitabilité en tant que pâte et dont la forme durcie présente d'excellentes propriétés de dispersion de la lumière et de transparence, ainsi qu'une excellente résistance mécanique et d'excellentes propriétés de polissage. La composition dentaire contient (A) un monomère polymérisable et (B) une poudre amorphe d'une taille de particule moyenne de 1 à 20 µm, qui comprend de fines particules à base de silice et un oxyde contenant des atomes de zirconium, des atomes de silicium et des atomes d'oxygène enduit sur la surface desdites fines particules à base de silice. La différence entre les indices de réfraction de la forme durcie dudit monomère polymérisable (A) et de ladite poudre amorphe (B) est de 0,005 à 0,03.

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