The present invention relates to dental cement composition that is more biocompatible and stimulates quicker healing of the damaged dental tissues. Specifically, the invention relates to dental cement composition comprising a combination of dental repair compounds consisting of nanoparticles of Tri-calcium Silicate (Ca3SiO5), Di-calcium Silicate (Ca2SiO4), Calcium Titanate (CaTiO3) and Hydroxyapatite (Ca10(PO4)6(OH)2).

The invention provides a nickel-free and cobalt-free, rust-proof austenitic steel, which meets the requirements, necessary in dentistry, concerning its corrosion resistance, its thermal expansion coefficient, its mechanical properties and its castability. For this purpose, the steel consists of, in % by mass, C: >0.2-0.8%, N: 0.3-1.3%, Si: 2.0%, Mn: 14-30%, Cr: 17-27%, Mo: 0-6%, W: 0-6%, Nb: 0-6%, Ga: 0-6%, Ta 0-6%, the remainder being iron and unavoidable impurities. The content of impurities complies with the stipulations in DIN EN ISO 22674:2016-09 for dental materials. The steel composed has an austenitic structure, an offset yield strength Rp0.2 of at least 230 MPa, a percent elongation A of more than 5%, and a modulus of elasticity of at least 150 GPa.

The subject invention pertains to a novel glass-ionomer cement (NGIC) that provides an alternative restorative material for dental amalgams being phased out; has improved mechanical properties compared to conventional glass-ionomer cement (GIC) products; has improved adhesive properties compared to conventional GIC products; provides sufficient biocompatibility; can release ions to promote remineralization of the teeth, which inhibits tooth decay; can inhibit growth of bacteria, which inhibits tooth decay; provides increased retention time and decreased frequency of replacement in the oral cavity. Formulations of the subject invention can include powders and solutions containing silicate glass, poly(vinylphosphonic acid) (PVPA), nanosilver bioactive glass, and polyacrylic acid.

The subject invention pertains to a novel glass-ionomer cement (NGIC) that provides an alternative restorative material for dental amalgams being phased out; has improved mechanical properties compared to conventional glass-ionomer cement (GIC) products; has improved adhesive properties compared to conventional GIC products; provides sufficient biocompatibility; can release ions to promote remineralization of the teeth, which inhibits tooth decay; can inhibit growth of bacteria, which inhibits tooth decay; provides increased retention time and decreased frequency of replacement in the oral cavity. Formulations of the subject invention can include powders and solutions containing silicate glass, poly(vinylphosphonic acid) (PVPA), nanosilver bioactive glass, and polyacrylic acid.

The invention relates to glass ceramics based on the lithium metasilicate system (Li.sub.2O.SiO.sub.2(Li.sub.2SiO.sub.3)), which are mechanically processible in a simple manner in an intermediate stage of the crystallization and, after complete crystallization, represent a high-strength, highly translucent and chemically stable glass ceramic.

A high molecular weight polyethylene polymer is formulated so that the polymer is capable of being injection molded. The polyethylene polymer has a Viscosity Number of greater than about 400 ml/g and has a melt flow rate of greater than about 0.9 g/10 min. The polyethylene polymer is of high purity and is particularly well suited for producing medical products.

A root canal filling material incorporates heat conductive particles of sub-micron size dispersed in a heat flowable matrix of endodontic filling material. The particle size is 1 micron or less (e.g., 0.5 to 1 micron, or nanoparticles of 100 nm or less). The addition of high heat conductive particles in the heat flowable matrix material improves the overall heat conductivity of the root canal filling material. During root canal treatment procedure, the filling material softens more thoroughly to fill the root canal apex and to form a seal of higher integrity at the root canal apex area, at a significantly lower operating temperature. The inventive filling material may be provided in bulk (e.g., pellet form) for use with an injection tool that heats and injects softened filling material into root canal cavities, or pre-shaped in the form of dental root canal filling cones (or points).

Provided are a dental implant abutment and a method of manufacturing the same, and more particularly, a dental implant abutment which forms an outer appearance of an artificial tooth, supports a porcelain prosthesis that is formed of a porcelain, and couples to and fixedly combines with a fixture. The dental implant abutment includes: a first part having a coupling structure that corresponds to an inner structure of the fixture, so that the first part couples to the fixture; a second part that extends upward from the first part and contacts gums; and a third part extending upward from the second part, having an outer circumferential surface which includes a side surface and a top surface, with a porcelain prosthesis attached to the outer circumferential surface, and including a shape in which a concave part, inwardly recessed, is formed on the side and a horizontal cross-sectional area increases in an upward direction from the concave part.

The present invention relates to dental cement composition that is more biocompatible and stimulates quicker healing of the damaged dental tissues. Specifically, the invention relates to dental cement composition comprising a combination of dental repair compounds consisting of nanoparticles of Tri-calcium Silicate (Ca3SiO5), Di-calcium Silicate (Ca2SiO4), Calcium Titanate (CaTiO3) and Hydroxyapatite (Ca10(PO4)6(OH)2).

A high molecular weight polyethylene polymer is formulated so that the polymer is capable of being injection molded. The polyethylene polymer has a Viscosity Number of greater than about 400 ml/g and has a melt flow rate of greater than about 0.9 g/10 min. The polyethylene polymer is of high purity and is particularly well suited for producing medical products.