Abstract: An orthodontic bracket having a base portion for attachment to a tooth. The base portion is provided with a substantially monolayer of substantially uniform sized particles. The particles may have a size in the range of 5 to 200 micron.

Abstract: An orthodontic bracket having a base portion for attachment to a tooth. The base portion is provided with a substantially monolayer of substantially uniform sized particles. The particles may have a size in the range of 5 to 200 micron.

Abstract: A device for dispensing elastomeric orthodontic appliances. The device has a mounting section having a rigid support structure and an outer layer. The outer layer has integrally formed therewith a plurality of orthodontic appliances detachably connected thereto. The outer layer and appliances are made of a material having a stiffness substantially less than that of the support structure. The device also has a finger gripping section attached at one end of the mounting section and preferably made integral with the rigid support structure.

Abstract: A trifunctional methacrylate or acrylic terminated urethane resin of the following chemical structure: ##STR1## Where: R.sub.1 is --H, --CH.sub.3, --CH.sub.2 CH.sub.3, or --CH.sub.2 CH.sub.2 CH.sub.3,R.sub.2 is (--CH.sub.2 CH.sub.2 --O--).sub.n or ##STR2## where: n=2 to 10, R.sub.3 is a divalent organic radical obtained by removal of two isocyanato groups from an organic diisocyanate,R.sub.4 is methylene, ethylene or propylene, andR.sub.5 is --H, or --CH.sub.3.

Abstract: An orthodontic tensioning thread comprising a plurality of elastomeric strands braided together, the combined effect of the braid providing significantly improved tensile strength, elasticity retention, tieability and knot retention as compared to prior art monofilaments of comparable circumference.

Abstract: A composition, method and product are provided for the coating of human nails. The coating composition comprises a curable ethoxyethylmethacrylate monomer, a polyethylmethacrylate homopolymer or copolymer filler and a cross-linking agent. The method involves applying the coating composition upon nails and curing the composition. The product involves a separately packaged liquid and powder, wherein the liquid comprises ethoxyethylmethacrylate monomer and a cross-linking agent and the powder comprises a polyethylmethacrylate filler.

Abstract: Dental materials containing dimethacrylates having the following chemical structures: ##STR1## where R.sub.1 and R.sub.2 may be the same or different and are cyclohexyl or phenyl groups which may be substituted or unsubstituted; andR.sub.3 is an aliphatic cycloaliphatic or aromatic group having 6 to 15 carbon atoms.

Abstract: Dimethacrylates are provided having the following chemical structure: ##STR1## where ##STR2## is a saturated, 6 membered, monocyclic, hydrocarbyl ring system; R.sub.1, R.sub.2 and R.sub.3 are the same or different and are hydrogen or alkyl or alkoxy groups having 1 to 12 carbon atoms; andR.sub.4 and R.sub.5 are the same or different and are hydrogen or groups of the formula: ##STR3## where R.sub.6 is an aliphatic, aromatic or cycloaliphatic group having 1 to 14 carbon atoms, provided that at least one of the groups R.sub.4 and R.sub.5 is a group of the formula: ##STR4## These compounds are useful in dental material which cures to form polymers having high mechanical strength, low water sorption, resistance to staining, good color stability when exposed to short-wave radiation (e.g., sunlight) and good chemical resistance to the oral environment. Also provided are a method for polymerizing this compound in situ on teeth and a tooth comprising a polymer of this compound.

Abstract: Dimethacrylates are provided having the following chemical structure: ##STR1## where R.sub.1 and R.sub.2 may be the same or different and are cyclohexyl or phenyl groups which may be substituted or unsubstituted; andR.sub.3 is an aliphatic cycloaliphatic or aromatic group having 6 to 14 carbon atoms. These compounds are useful in dental material which cures to form polymers having high mechanical strength, low water sorption, resistance to staining, good color stability when exposed to short-wave radiation (e.g., sunlight) and good chemical resistance to the oral environment. Also provided are a method for polymerizing these compounds in situ on teeth and a tooth comprising polymers of these compounds.

Abstract: Polymerizable adducts of diisocyanates and methacryloyl alkyl ethers, alkoxybenzenes, or alkoxycycloalkanes are disclosed. The compounds of the present invention are formed into compositions which are useful as bone cement, fillings for cavities, and orthodontic adhesives. The compositions have improved mechanical properties, low water absorption, and excellent color and discoloration stability, coupled with a high filler content.

Abstract: Dimethacrylates are provided having the following chemical structure: ##STR1## wherein n represents a number of 2 to 8;R.sub.1 and R.sub.2 are the same or different and are hydrogen or groups of the formula: ##STR2## where R.sub.3 is an aliphatic, aromatic or cycloaliphatic group having 1 to 14 carbon atoms. These compounds are useful in dental material which cures to form polymers having high mechanical strength, low water sorption, resistance to staining, good color stability when exposed to short-wave radiation (e.g., sunlight) and good chemical resistance to the oral environment. Also provided are a method for polymerizing these compounds in situ on teeth and a tooth comprising polymers of these compounds.

Abstract: Dimethacrylates are provided having the following chemical structure: ##STR1## where ##STR2##is a saturated, 6 membered, monocyclic, hydrocarbyl ring system;R.sub.1, R.sub.2 and R.sub.3 are the same or different and are hydrogen or alkyl or alkoxy groups having 1 to 12 carbon atoms; andR.sub.4 and R.sub.5 are the same or different and are hydrogen or groups of the formula: ##STR3## where R.sub.6 is an aliphatic, aromatic or cycloaliphatic group having 1 to 14 carbon atoms, provided that at least one of the groups R.sub.4 and R.sub.5 is a group of the formula: ##STR4## These compounds are useful in dental material which cures to form polymers having high mechanical strength, low water sorption, resistance to staining, good color stability when exposed to short-wave radiation (e.g., sunlight) and good chemical resistance to the oral environment. Also provided are a method for polymerizing this compound in situ on teeth and a tooth comprising a polymer of this compound.

Abstract: Dimethacrylates are provided having the following chemical structure: ##STR1## where n represents a number of 2 to 8;R.sub.1 and R.sub.2 are the same or different and are hydrogen or groups of the formula: ##STR2## where R.sub.3 is an aliphatic, aromatic or cycloaliphatic group having 1 to 14 carbon atoms. These compounds are useful in dental material which cures to form polymers having high mechanical strength, low water sorption, resistance to staining, good color stability when exposed to short-wave radiation (e.g., sunlight) and good chemical resistance to the oral environment. Also provided are a method for polymerizing these compounds in situ on teeth and a tooth comprising polymers of these compounds.

Abstract: Dental restorative compositions of improved X-ray opacity are described. These compositions comprise from 30% to 85% by weight of the composition of a finely divided inorganic filler and from 15% to 70% by weight of the composition of a liquid resin binder. The filler comprises at least 60% by weight of the filler of a ground barium glass that has a barium oxide (BaO) content greater than about 22.5% by weight of the glass. By appropriate selection of the binder, the composition may cure in a single stage of curing, or it may set in two stages, to provide a period of time during which it can be carved to a desired shape.

Abstract: Low viscosity dental restorative coating compositions for application to natural and to artificial teeth, useful in covering surface imperfections including stains, gumline erosion, small pits, and the like. They are designed to impart to restored teeth the overall appearance of original teeth, particularly with respect to natural vitality and fluorescense, while effectively masking stains and themselves resisting discoloration from staining agents and upon aging. They are formulated to bond well, look natural, and wear well. As ready to use, a coating composition will contain from about 30% to about 70% filler by weight of the composition, in a resinous, curable liquid vehicle. The composition is formulated to be sufficiently fluid so that it can be applied to a dental surface easily and conveniently, as by brushing on a previous prepared surface, and it will flow to a featheredge.