Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
1994-06-15
2002-12-31
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C523S118000, C524S436000, C524S437000, C526S318100
Reexamination Certificate
active
06500879
ABSTRACT:
The invention relates to dental compositions and methods of use thereof to bind hard tooth, metal and ceramic. The invention provides compositions including complexes formed by reacting multivalent cation with acid moieties of ethylenically unsaturated Monomers and prepolymers. The invention provides compositions with superior adhesion to dentin, enamel and cementum without the need for separate steps of acid etching dental enamel to adhere thereto. Compositions of the invention are useful as dental luting cements, liners, bases and restoratives. The compositions of the invention are hydrolytically stable. The heterogeneous multi-phase dental compositions of the invention show improved mechanical strength, for example, improved bond strength to tooth and are less sensitive to the effects of moisture.
Glass ionomers are described by A. Wilson in U.S. Pat. Nos. 5,079,277 and 4,758,612. Prior art glass ionomer compositions are combinations of a polyalkenoic acid polymer such as polyacrylic acid and an elutable glass which provides a source of cations to react with the polyacrylic acid. Prior art glass ionomers are brittle and weak in high stress applications and set poorly in the presence of moisture unless protected from water. Prior art pit and fissure materials include polymerizable hydrophobic resins with essentially no adhesion to tooth. They are adhered by infiltrating micromechanical undercuts produced by acid etching. They harden in-situ to protect the tooth from colonization by bacteria in order to reduce caries, but because they are difficult to use they are not universally employed to achieve this valuable result. They require the tooth be cleaned, acid etched, washed, dried and isolated by rubber dam to maintain dryness, to avoid contamination by saliva, and achieve suitable results. The procedure is thus uncomfortable for the patient and laborious for the dentist. The present invention provides pit and fissure sealant compositions which are applied to tooth without a separate acid etching step.
Olivier in U.S. Pat. No. 3,234,181 discloses melt-fabricable end-capped aromatic polyimides.
Lonerini in U.S. Pat. No. 3,407,176 discloses polyamide-acids and polymide from a mixture of dianhydrides.
Gall in U.S. Pat. No. 3,422,061 discloses coalesceable polyimide powders from a polycarboxylic aromatic dianhydride and phenylene diamine.
Angelo in U.S. Pat. No. 3,424,718 discloses copolymers of aromatic tetracarboxylic acids with at least two organic diamines.
Rogers in U.S. Pat. No. 3,959,350 discloses melt-fusible linear polyimide of 2,2-bis(3,4-dicarboxyphenyl)-hexafluoropropane dianhydride.
Madsen in U.S. Pat. No. 4,322,207 discloses dental cleaning slurry.
Beede et al in U.S. Pat. No. 4,324,591 discloses modifying agents for ion-leachable cement compositions.
Gibbs in U.S. Pat. No. 4,336,175 discloses polymide precursor solutions.
Schmitt et al in U.S. Pat. No. 4,372,836 disclose light curable acrylic dental composition with calcium fluoride pigment.
Smyth in U.S. Pat. No. 4,401,773 discloses highly reactive ion-leachable glass.
Denyer et al in U.S. Pat. No. 4,457,818 discloses dental compositions from urethane acrylate, diacrylate monomer, camphorquinone and dimethylaminoethyl methacrylate.
Ratcliffe et al in U.S. Pat. No. 4,459,193 discloses dental compositions containing camphorquinone and organic peroxide as catalyst.
Denton, Jr. et al in U.S. Pat. No. 4,492,777 discloses heat treated barium or strontium glass.
Bowen in U.S. Pat. No. 4,514,527 discloses method for obtaining strong adhesive bonding of composites to dentin enamel and other substrates.
Bowen in U.S. Pat. No. 4,521,550 discloses method for obtaining strong adhesive bonding of composites to dentin, enamel and other substrates.
Martin in U.S. Pat. No. 4,525,256 discloses photopolymerizable composition including catalyst comprising diketone plus 4-(N,N-Dimethylamino)benzoic acid or ester thereof.
Bowen in U.S. Pat. No. 4,588,756 discloses multi-step method for obtaining strong adhesive bonding of composites to dentin, enamel and other substrates.
Ratcliffe et al in U.S. Pat. No. 4,602,076 discloses photopolymerizable compositions.
Peters in U.S. Pat. No. 4,612,361 discloses poly(etherimides) and compositions containing the same.
Blackwell et al in U.S. Pat. No. 4,657,941 discloses biologically compatible adhesive containing a phosphorus adhesion promoter and a sulfinic accelerator.
Bowen in U.S. Pat. No. 4,659,751 discloses simplified method for obtained strong adhesive bonding of composites to dentin, enamel and other substrates.
Gallagher et al in U.S. Pat. No. 4,680,373 discloses process for the production of a random copolymer containing repeating polyimide units and repeating polyetherimide units.
Aasen et al in U.S. Pat. No. 4,719,149 discloses method for priming hard tissue.
Berdahl et al in U.S. Pat. No. 4,794,157 discloses polyetherimide copolymers, and method for making.
Engelbrecht et al in U.S. Pat. No. 4,806,381 discloses polymerizable compounds containing acid and acid derivatives, mixtures containing the same, and use thereof.
Blackwell et al in U.S. Pat. No. 4,816,495 discloses biologically compatible adhesive visible light curable compositions.
Calla et al in U.S. Pat. No. 4,864,015 discloses method for making thianthrene dianhydride and polyimides obtained therefrom.
Engelbrecht in U.S. Pat. No. 4,872,936 teaches dental cement mixtures containing polymerizable unsaturated monomers and/or oligomers and/or prepolymers containing acid groups and/or their reactive acid-derivative groups.
Aasen et al in U.S. Pat. No. 4,880,660 discloses method for priming hard tissue.
Kawaguchi et al in U.S. Pat. No. 4,918,136 discloses adhesive composition.
Ibsen et al in U.S. Pat. No. 4,964,911 discloses adhesive bonding of acrylic resins, especially in dentistry.
Huang et al in U.S. Pat. No. 4,966,934 discloses biological compatible adhesive containing a phosphorous adhesion promoter and accelerator.
Hirasawa et al in U.S. Pat. No. 4,985,198 discloses tooth-adhesive compounds.
Okada et al in U.S. Pat. No. 5,055,497 discloses curable resinous composition.
Akahane et al in U.S. Pat. No. 5,063,257 discloses dental glass ionomer cement compositions.
Wilson et al in U.S. Pat. No. 5,079,277 discloses polyvinylphosphonic acid and metal oxide or cermet or glass ionomer cement.
Mitra in U.S. Pat. No. 5,130,347 discloses photocurable ionomer cement systems.
Mitra et al in U.S. Pat. No. 5,154,762 discloses universal water-based medical and dental cement.
Ohno et al in U.S. Pat. No. 5,171,763 discloses curable composition.
Rambosek in Canadian Patent 873,935 discloses lithium aluminum silicate, polymer dental filling compositions.
Rossi in Canadian Patent 934,085 discloses dental restorative material of improved polishability.
Spoor in Canadian Patent 968,741 discloses production of coatings by curing with ionizing radiation.
Knight in Canadian Patent 969,299 discloses resins prepared from vinyl-ended polyurethane prepolymers.
Wailer in Canadian Patent 983,190 discloses photopolymerizable acrylic dental products.
Lee et al in Canadian Patent 1,018,294 discloses dental filling package.
O'Sullivan in Canadian Patent 1,020,687 discloses urethaneacrylate dental filling composition.
Rockett et al in Canadian Patent 1,028,441 discloses three package dental restoration system.
Lorenz in Canadian Patent 1,117,242 discloses coating composition comprising N-vinyl-2-Pyrrolidone and an oligomer.
Osborn in Canadian Patent 1,131,388 discloses radiation curable urethane compositions.
Davies et al in Canadian Patent 1,136,796 discloses potopolymerizable compositions.
Skudelny et al in Canadian Patent 1,154,895 discloses flowable mixture and use of synthetic calcium silicate.
Schaefer in Canadian Patent 1,159,984 discloses dental material having a plastics material base.
Munk in Canadian Patent 1,164,124 discloses pourable solid mixture.
Chevreux et al in Canadian Patent 1,176,787 discloses photosetting adhesive composition.
Gruber et al in Canadian Patent 1,179,094 discloses radiation curable coating composition comprising an oligo
Fan Mingxin
Hammesfahr Paul
Huang Chin-Teh
Lu Kewang
Bieber James B.
Dentsply Research & Development Corp.
Lovercheck Dale R.
Szekely Peter
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