Abstract:
A method for producing blanks for endodontic instruments (1), endodontic instruments (1), and a delivery device. The method comprises the steps of providing at least one rod (2) and machining the at least one rod (2) by a wire erosion such that an erosion pattern (4) is applied to the at least one rod (2). The material eroded away from the at least one rod (2) at least partially deposits as a layer on the at least one rod (2). The layer of the re-deposited material has a surface hardness which substantially corresponds to the hardness of the material of the at least one rod (2).
Abstract:
A dental jacket made of a hard, solvent free, substantially non-hydrophilic polyurethane elastomer. The jacket elastomer has a hardness of not less than about Shore D65. A polyester or polyether polyol with a functionality greater than two and a molecular weight greater than one hundred is reacted with an isocyanate prepolymer prepared from one or more branched polyester or polyether polyols with a functionality greater than two; and then blending prepolymer and first polyester or polyether polyol with nanoparticles. In one embodiment, the polypropylene glycol triether and the isocyanate prepolymer comprises dicyclohexylmethane 4,4′-diisocyanate.
Abstract:
A hard, solvent free, substantially non-hydrophilic polyurethane elastomer for use in making dental appliances. The elastomer has a hardness of not less than about Shore D65. A polyether or polyester polyol with a functionality greater than two and a molecular weight greater than one hundred is reacted with an isocyanate prepolymer prepared from one or more branched polyether or polyester polyols with a functionality greater than two; and then blending prepolymer and first polyether or polyester polyol with nanoparticles. In one embodiment, the polypropylene glycol triether and the isocyanate prepolymer comprises dicyclohexylmethane 4,4′-diisocyanate.
Abstract:
Medical instruments, particularly, endodontic instruments with unique limited memory characteristics, and methods for making such instruments. One embodiment includes heat treating a finished endodontic instrument. A related embodiment includes electropolishing a finished endodontic instrument and then heat treating the endodontic instrument.
Abstract:
Methods for modifying a physical characteristic of finished endodontic instruments made from one or more superelastic alloys is described which include heat treating one or more finished endodontic instruments in a salt bath for a specific time (e.g., from about four hours to about six hours), at a specified temperature (e.g., from about 475° C. to about 550° C.), and preferably at a specified pH range.
Abstract:
A hardenable dental article including a base and at least one outer surface extending from the base, wherein at least the base and the at least one outer surface of the hardenable dental article includes a hardenable dental material; and a multi-layer polymeric film conformable release liner in contact with at least a portion of the at least one outer surface.
Abstract:
Medical instruments, particularly, endodontic instruments with unique limited memory characteristics, and methods for making such instruments. One embodiment includes heat treating a finished endodontic instrument. A related embodiment includes electropolishing a finished endodontic instrument and then heat treating the endodontic instrument.
Abstract:
The brace includes: a chest plate; a chin support; a rod having a top surface, the rod adjustably attached to the chest plate; and an adjustable linkage connected to the top surface and to the chin support. The brace is used to immobilize a Patient's chin relative to The Patient's spinal column, or The Patient's chest, or both when the Patient's chin is placed upon the chin support.
Abstract:
The brace comprises: a chest plate; a chin support; a rod having a top surface, the rod adjustably attached to the chest plate; and an adjustable linkage connected to the top surface and to the chin support. The brace is used to immobilize a Patient's chin relative to The Patient's spinal column, or The Patient's chest, or both when the Patient's chin is placed upon the chin support.
Abstract:
A matrix band for use in dentistry has a silicone-based, polymer coating applied to an etched stainless steel surface, which reduces or eliminates capillary action between a tooth and the matrix band, while at least one aperture in the matrix band assists with removal of the matrix band from the tooth.