Gas releasing sealing and filling compositions

Details Gas releasing sealing and filling compositions Gas releasing sealing and filling compositions

2007-02-06

2007-02-06

Yoon, Tae H (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S118000, C524S190000, C524S431000, C524S451000, C524S493000, C433S228100

Reexamination Certificate

active

10929296

ABSTRACT:
Sealing and filling compositions for use in filling and/or sealing a root canal. The sealer and filler compositions include a polymerizable material that shrinks when polymerized. The composition also includes a gas releasing component that at least partially offsets the shrinkage caused by polymerization of the polymerizable material. The gas releasing component offsets polymerization shrinkage by creating tiny gas bubbles in the polymeric material, which causes expansion. The gas releasing component can be an acid and a base such as citric acid and sodium bicarbonate, which when mixed give off carbon dioxide. The composition can also include a dispersing agent to disperse the gas bubbles throughout the composition.

REFERENCES:
patent: 4110184 (1978-08-01), Dart et al.
patent: 4362842 (1982-12-01), Masuhara et al.
patent: 4433958 (1984-02-01), Fellman et al.
patent: 4491453 (1985-01-01), Koblitz et al.
patent: 4552906 (1985-11-01), Podszun et al.
patent: 4772031 (1988-09-01), Poppo
patent: 5002475 (1991-03-01), Graefe
patent: 5380772 (1995-01-01), Hasegawa et al.
patent: 5834532 (1998-11-01), Yamamoto et al.
patent: 5877232 (1999-03-01), Storch et al.
patent: 6184339 (2001-02-01), Stansbury et al.
patent: 6353041 (2002-03-01), Qian
patent: 6455608 (2002-09-01), Jia et al.
patent: 6500004 (2002-12-01), Jensen et al.
patent: 6506815 (2003-01-01), Shinozaki et al.
patent: 6620232 (2003-09-01), Kraft et al.
patent: 2002/0016420 (2002-02-01), Zarnoch et al.
patent: 2003/0153645 (2003-08-01), Sun et al.
patent: 2003/0225182 (2003-12-01), Walz et al.
patent: 0209700 (1990-08-01), None
patent: 1113722 (1968-05-01), None
patent: 62132904 (1987-06-01), None
patent: 62177001 (1987-08-01), None
patent: 3130211 (1991-06-01), None
patent: 4335008 (1992-11-01), None
patent: 8188516 (1996-07-01), None
patent: 9100208 (1997-04-01), None
patent: 2002/338422 (2002-11-01), None
patent: WO 0153413 (2001-07-01), None
Fujisawa, S., “Effect of Phenolic Compounds on the Polymerization of Methyl Methacrylate” Dent Master, 8(5): 324-6 1993.
Kadoma Y, et al., “Kinetic Evaluation of Reactivity of Bisphonol A Derivatives as Radical Scavengers for methacrylate Polymerization” Biomaterials, 21(21): 2125-30 2000.
“Vazo® Water Soluble Grades” DuPont Specialty Chemicals, Technical Information Feb. 1999.
Silwet L-77 Surfactant, Setre Chemical Company, Material Safety Data Sheet, 1998.

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