Abstract: A dental restoration system includes a plurality of proximal inlays of differing sizes for selection by a dentist to fit a prepared tooth cavity. In addition, a plurality of occlusal inlays is provided for covering the prepared tooth cavity and abutting the proximal inlays. In combination therewith, a curable restorative resin is provided for securing the proximal inlay in a blocking relationship with the end of a prepared tooth cavity and for securing the occlusal inlay to a bottom of the prepared tooth cavity and to the proximal inlay. The method of the present invention provides for forming a prepared tooth cavity and the utilization of curable restorative resins for providing modular-occlusal-distal (MOD) or modular-occlusal (MO) dental restorations using a modular preformed proximal and occlusal inlays to provide the usual appearance of an original natural tooth.

Abstract: An artificial fingernail or tip formed of polymer plastic contains light diffusing means located only within the front distal portion, the light diffusing means including, a plurality of minute depressions within and throughout at least the upper surface of said polymer strip for providing a textured roughened surface to obtain a natural appearing contrast between the front distal portion and the back proximal portion of the nail. In an additional aspect, the appearance is further enhanced by inclusion of slight pigmentation of the plastic material.

Abstract: Improved composition for a fingernail coating having an acrylic binder, a peroxide catalyst, a tertiary amine accelerator, and a polymeric filler at least partially soluble in the coating. The acrylic binder contains a monoethylenically unsaturated monomer comprising at least a major proportion of methoxyethyl methacrylate. A polyfunctional monomer may be present that copolymerizes with the monoethylenically unsaturated monomer, for crosslinking and toughening.

Abstract: Self-curing artificial fingernail compositions containing crosslinking monomers, monoacrylates and suitable initiators and accelerators, and methods of polymerizing and applying same.

Abstract: Disclosed is a rapid setting adhesive of low toxicity having high bond strength to a variety of metals and plastics, and particularly to stainless steel, polycarbonate plastics and tooth enamel. The composition consists essentially of (A) a resin which is formed from an ester of methacrylic acid with a monoalcohol containing at least one epoxy group and (B) a filler which may be any of a plurality of finely divided materials that are insoluble in ambient fluids or a mixture of such fillers, parts (A) and (B) being present in a weight ratio such that the initial mixture at ambient temperature and pressure is a viscous liquid or paste. Also included are minor amounts of a conventional polymerization catalyst and a conventional polymerization accelerator. Preferably parts (A) and (B) are packaged separately, with polymerization catalyst included in only one package.

Abstract: Dental restorative compositions comprise self-curing systems of monomer containing two or more polymerizable ethylenically unsaturated groups of different respective reactivities, and thus of different curing rates, and other materials such as fillers, inhibitors, curing agents, and the like. The polymerizable groups may be selected from the group consisting of two or more vinyl, allyl, acryl, methacryl, and styryl groups.

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: The adhesive bonding of a pontic tooth to the two adjacent, natural abutment teeth is improved, particularly in resistance to shearing forces, by an improved adhesive bonding system. In this system, adhesive is applied to the previously prepared surfaces of the abutment teeth, and a thin screen or perforated film or foil is embedded in the adhesive on each tooth surface, conformed to the shape of the prepared surface, and penetrated by the adhesive. In one preferred embodiment, the adhesive wets and penetrates the surface of the artificial pontic that is being secured in place, the previously prepared abutment tooth surfaces, and the screens or films or foils, so that upon curing, an integral mass results that is mechanically strong, particularly in resistance to shear. The system is useful with natural or artificial teeth, can be used to install fixed bridges, and is useful for splinting.

Abstract: Adhesive dental restorative composite comprising a suspension of filler fibers in a liquid polyacrylate resin composition wherein the resin has a viscosity of less than 5000 centipoise. The fibers which may be organic or inorganic generally have lengths of 1 to 100 microns and diameters which are from 1/20 to 1/5 of the lengths. An amine accelerator and a peroxide catalyst for the acrylate resin are included in the composite. The fibers comprise from 30% to 70% by weight of the composite.The referred resin formulation comprises from 25% to 90% by weight of a polyethyleneglycol diacrylate and from 10% to 75% by weight of an aromatic or alicyclic polyacrylate compound.An especially preferred composite is one wherein the resin comprises 40 parts triethyleneglycol dimethacrylate to 60 parts bisphenol-A-bis(3-methacrylato-2-hyroxypropyl) ether having suspended therein calcium silicate fibers having an average length of 5.

Abstract: Self-curing artificial fingernail compositions containing crosslinking monomers, monoacrylates and suitable initiators and accelerators, and methods of polymerizing and applying same.

Abstract: Dental restorative compositions are described comprising a finely divided filler mixed with a resin binder that can be activated to cause it to set in situ after application to a tooth surface or within a tooth cavity. The resin binder has as its primary component the reaction product of an alicyclic diacid (or its anhydride) polyfunctional material that has been reacted to form an ester with each of two acrylate or methacrylate materials, which may be the same but that preferably are different.

Abstract: Dioxolane compounds useful to initiate photopolymerization and polymerizable compositions of matter containing such compounds.

Abstract: Esters are prepared by reaction of acyl halides and alcohols or hydroxyalkyl esters and acid halides in the presence of a tertiary amine and polar aprotonic solvents. Bis(2-methacrylatoethyl) phthalate is prepared by the reaction of phthaloyl chloride with 2-hydroxyethyl methacrylate in pyridine and acetone. Bis-phenol-A-bis(2-methacrylatoethyl)ether is prepared from 2,2-bis[4-(2-hydroxyethoxy)phenyl]-propane and methacryl chloride in acetone.

Abstract: Photopolymerizable composition of matter for the production of formed-in-place artificial nails.

Abstract: A novel X-ray opaque filler for synthetic resinous compositions including dental and medical restorative materials is disclosed.

Abstract: A composition of matter comprising a polymeric reaction product of a hydroxy terminated butadiene prepolymer having an average molecular weight of about 400 to 25,000 and containing 1 to 3 hydroxyl groups per molecule and a polyisocyanate reactant present in an amount to provide from 100 to 1200 percent excess isocyanate groups to hydroxyl groups or active hydrogen sites, and from 1 to 70 percent by weight of a compound containing a fluoride ion. In another, and preferred aspect of the invention, the polyisocyanate reactant is present in an amount to provide from 1.5 to 2.7 isocyanate groups for each hydroxyl group or active hydrogen site, the composition containing an aromatic polyol, such as N,N-bis(2-hydroxypropyl) aniline, and wherein the aromatic polyol comprises at least 42 percent but not more than 60 percent of the hydroxyl components. The compositions are especially useful as dental fissure sealants and as means of applying a fluoride to a tooth surface.