By Named Composition Patents (Class 433/228.1)
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Publication number: 20040002037Abstract: A method of securing a dental post in a prepared post hole of a tooth or a crown or bridge to a prepared tooth utilizing a no-mix, two component, self-curing cement wherein the first component is applied with a micro sized applicator to coat the interior surfaces of a post hole, crown or bridge, and wherein the second component is thereafter placed into the coated post hole or onto the surface of the tooth receiving the crown or bridge, and whereby the post, crown or bridge is then fitted onto the prepared tooth. Upon fitting of the post, crown or bridge, the components immediately set to firmly secure the post, crown or bridge onto the prepared tooth.Type: ApplicationFiled: June 28, 2002Publication date: January 1, 2004Inventors: Jan A. Orlowski, John J. Discko
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Publication number: 20040002036Abstract: Processes for forming dental materials that include applying a hardenable dental adhesive to a surface and a second hardenable dental composite to the dental adhesive. The hardenable dental composite includes at least two adjacent regions with different concentrations of a photoinitiator, at least two adjacent regions with different photoinitiators, or both.Type: ApplicationFiled: June 28, 2002Publication date: January 1, 2004Inventors: Bradley D. Craig, Rajdeep S. Kalgutkar, Joel D. Oxman
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Patent number: 6652840Abstract: A composition is disclosed which has been shown to stop or control bleeding and seal open small blood vessels while accelerating the healing process of abraded oral “gum” and other “skin” (epithelial) tissues. The composition is preferably in the form of a paste which promotes ease of application and use of the composition. A variety of instruments can be used in application and cleanup of the composition showing versatile unparalleled friendly usage. The composition preferably comprises aluminum chloride, ferric sulfate (subsulfate), regenerated oxidized cellulose, aluminum ammonium sulfate, absorbable gelatin and a solvent. The composition has many dental and medical procedure applications.Type: GrantFiled: February 8, 2002Date of Patent: November 25, 2003Inventor: Terence Prevendar
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Patent number: 6652282Abstract: Endodontic sealant compositions and methods for sealing a root canal using sealant or other filling materials. The compositions include one or more resins that promote adhesion to hydrophilic dental tissues. Examples include alkyl methacrylates and derivatives thereof, such as alkylamino methacrylates and oxyphosphoro methacrylates. The compositions include a radio opacifying agent, so that they may be seen using X-rays, and one or more polymerization initiators to effect curing, at least one chemical initiator and, optionally, a photoinitiator, to yield a curable sealant composition. The compositions are introduced into the root canal using a narrow cannula coupled to a high pressure hydraulic delivery device. Additional pressure may be applied to the sealant compositions using a syringe-like plunger introduced within a cylindrical access hole drilled through the crown of the tooth. The chemical initiator causes the mixed composition to harden over time.Type: GrantFiled: April 12, 2002Date of Patent: November 25, 2003Assignee: Ultradent Products, Inc.Inventors: Steven D. Jensen, Dan E. Fischer
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Patent number: 6649147Abstract: Disclosed is a delivery system for delivering an oral care substance to the oral cavity, the delivery system comprising: (a) a removable backing strip having sufficient flexibility so as to be readily conformable to an oral surface when the delivery system is placed thereagainst; and (b) an oral care composition applied to the strip of material such that when the delivery system is placed on the oral surface the oral care composition contacts the oral surface, the oral care composition comprising: (i) an organosiloxane resin; (ii) a theology modifier; and (iii) at least one oral care substance; wherein the oral care composition remains on the oral surface after the backing strip is removed. Further disclosed are such delivery systems in which the oral care composition further comprises fluid diorganopolysiloxane-based polymers; such compositions may further comprise carriers for solubilizing the organosiloxane resin and the fluid diorganopolysiloxane-based polymers.Type: GrantFiled: March 20, 2002Date of Patent: November 18, 2003Assignee: The Procter & Gamble CompanyInventors: Hai Ye, Christopher David Buckley, Jiang Yue
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Patent number: 6626673Abstract: To provide a root canal filling material remover that can remove a root canal filling material such as a gutta-percha point which is liable to remain in a root apex portion, or a sealer for root canal filling which is liable to enter into a dental pulp of a root canal wall and remain therein, after being removed during the re-treatment of a root canal, in a simple operation, without need of an excessive root canal enlargement operation as has been seen before, the root canal filling material remover contains at least one member selected from limonene, eucalyptus oil, chloroform and xylene, and a surfactant. Further, a polishing material may be added to the root canal filling remover.Type: GrantFiled: December 3, 2001Date of Patent: September 30, 2003Assignee: GC CorporationInventors: Masao Abiru, Kimihiko Sato, Takaharu Takeshita
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Patent number: 6624211Abstract: The present invention provides a dental material that includes a hardenable resin system and a first initiator system capable of hardening the hardenable resin.Type: GrantFiled: May 16, 2001Date of Patent: September 23, 2003Assignee: 3M Innovative Properties CompanyInventors: Naimul Karim, Joel D. Oxman, Ahmed S. Abuelyaman, Babu N. Gaddam
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Publication number: 20030175660Abstract: Dental composite compositions, restorative compositions are provided comprising (a) from about 1 to about 35 weight percent of a monomer portion comprising at least one monomer having a functional group capable of undergoing polymerization; (b) from about 75 to about 95 weight percent of a filler portion, said filler portion comprising at least a spherical filler portion having at least one spherical filler particle component; and (c) from about 0.01 to about 10 weight percent of a polymerization catalyst portion comprising at least one catalyst capable of assisting in the polymerization of said functional group of said monomer portion and hardening of the composite after application of the composite to a tooth surface or other dental surface; wherein said spherical filler portion is present in an amount sufficient to reduce shrinkage of said composite after polymerization to about 1.8 percent or less.Type: ApplicationFiled: November 20, 2001Publication date: September 18, 2003Inventors: Rui Yin, Byoung In Suh, Louis Sharp, Amer Tiba
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Patent number: 6620864Abstract: A composition suitable for use in dental medicine and/or dentistry polymerizable by cationic polymerization consists of one or more epoxy compounds, a plasticizer, a catalyst for hardening by ring opening, a catalyst for hardening by light and an accelerator consisting of a non alkaline tertiary amine. At radiation with a light having a wavelength of 340-500 nm the composition hardens practically free of contraction and adhesiveness.Type: GrantFiled: August 17, 2001Date of Patent: September 16, 2003Assignee: LSP Dental Chemistry AGInventor: Adalbert Schmid
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Patent number: 6620232Abstract: Chemically bound ceramic system, the binder phase of which essentially consisting of a cement based system, which material comprises one or more expansion compensating additives adapted to give the material dimension stable long time properties.Type: GrantFiled: April 12, 2001Date of Patent: September 16, 2003Assignee: Doxa AktiebolagInventors: Lars Kraft, Leif Hermansson
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Patent number: 6620747Abstract: A low-temperature-sintering apatite glass ceramic is described which is characterized by a high chemical stability, a low coefficient of expansion as well as high translucency and which is particularly suitable on its own or together with glasses or other glass ceramics as coating or veneering material for ceramic dental restorations.Type: GrantFiled: June 22, 2001Date of Patent: September 16, 2003Assignee: Ivoclar Vivadent AGInventors: Marcel Schweiger, Volker Rheinberger, Wolfram Höland
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Patent number: 6620859Abstract: Described are methods of improving cure of polymerizable dental materials by preventing oxygen inhibition; preferred embodiments relate to methods wherein the dental compositions comprises a polymerizable sealant and the barrier material comprises an essential oil.Type: GrantFiled: December 15, 2000Date of Patent: September 16, 2003Assignee: Dakota Dental Development, Inc.Inventors: John H. Warford, II, John H. Warford, III, Edward C. Combe
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Patent number: 6613437Abstract: The invention relates to two-component preparations comprising components (I) and (II), wherein at least one component comprises epoxy compounds and the preparations cure by cationic polymerization, initiated by Lewis and/or Brönsted acids, after mixing of the two components, the preparations comprising the Lewis and/or Brönsted acids in the form of precursor compounds which are suitable for the formation of Lewis and/or Brönsted acids.Type: GrantFiled: November 28, 2001Date of Patent: September 2, 2003Assignee: 3M ESPE AGInventors: Gunther Eckhardt, Bernd Gangnus, Wolfgang Weinmann, Cornelia Fuehrer
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Patent number: 6613812Abstract: A dental composition is provided comprising (a) a part A comprising fluoroaluminosilicate glass that has been surface treated with agents selected from the group consisting of silane, silanol and combinations thereof, and at least one fatty acid, dimer thereof, or trimer thereof; and (b) a part B comprising at least one polyacid. The composition further comprises resin that can be curable or non-curable and at least one initiator. The composition exhibits adhesion to dentin, and the treated FAS glass contained therein does not settle out with time.Type: GrantFiled: January 3, 2001Date of Patent: September 2, 2003Assignee: 3M Innovative Properties CompanyInventors: Hoa T. Bui, Brant U. Kolb, Sumita B. Mitra
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Patent number: 6602074Abstract: A process for preparing dental restorations includes the steps of applying a composite restorative material onto a prepared tooth followed by the application of light to the composite of intensity sufficient to penetrate the composite to initiate polymerization. Light application is then suspended for a period of time sufficient to allow for the relaxation of internal stresses created by the initial polymerization of the composite. Light is subsequently applied to the composite to complete polymerization. A curing light is utilized which includes variably-adjustable, multiple power and timing settings.Type: GrantFiled: August 2, 2000Date of Patent: August 5, 2003Assignee: Bisco, Inc.Inventors: Byoung I. Suh, Wayne Vinson
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Patent number: 6599960Abstract: The invention relates to preparations with improved curing behavior, which are characterized in that they contain 0.0005 to 50 wt. % of soluble and/or fine-particle organic and/or inorganic alkaline earth and/or alkali metal compounds. The preparations according to the invention may be used for bonding, sealing, casting and coating substrates, also in medical dental and technical dental preparations, and for making impressions of articles and, more particularly, for making dental impressions.Type: GrantFiled: July 13, 2000Date of Patent: July 29, 2003Assignee: Espe Dental AGInventors: Gunther Eckhardt, Gunther Lechner, Erich Wanek, Ursula Somnitz
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Patent number: 6592851Abstract: The present invention provides a method of utilizing a non-metallic composition to repair or seal hard dental tissue, wherein the non-metallic compositions harden in the mouth to form substantially permanent fixtures. The compositions comprise an amount of an essential oil effective to alter the sensor properties, i.e., the taste or smell, of the composition, and that desirably imparts a pleasant taste and/or odor. The essential oil further advantageously provides the composition, once hardened in the mouth, with a surface more hydrophobic than a corresponding composition, thereby inhibiting the deposition or formation of bacterial plaque.Type: GrantFiled: August 31, 2001Date of Patent: July 15, 2003Assignee: Dakota Dental Development, Inc.Inventors: John H. Warford, III, Edward C. Combe, John H. Warford, II
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Patent number: 6585514Abstract: To dissolve a calcium hydroxide-based root canal filler having been carbonated and fixed within a root canal, which cannot be removed from the root canal by means of a reamer and a file, during doing the root canal treatment again, and to sterilize the root canal, the solubilizing agent of the carbonated calcium hydroxide-based root canal filler includes water containing 1 to 60% by weight of the whole of at least one acid selected from the group consisting of phosphoric acid, gluconic acid, fumaric acid, lactic acid, glycolic acid, propionic acid, malic acid, maleic acid, citric acid, succinic acid, tartaric acid, acetic acid, glycerophosphoric acid, and malonic acid; and 0.1 to 30% by weight of the whole of at least one sterilizing properties-imparting agent selected from the group consisting of an iodine preparation, a surfactant, a bactericide, hydrogen peroxide, and limonene.Type: GrantFiled: February 15, 2002Date of Patent: July 1, 2003Assignee: GC CorporationInventors: Yohji Imai, Masao Abiru, Kimihiko Sato
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Patent number: 6579919Abstract: A try-in paste, kit, and method of use, wherein the try-in paste includes: a polyalkylene glycol that is liquid at room temperature; a polyalkylene glycol that is solid at room temperature; and a particulate material; wherein the polyalkylene glycols are present in amounts to provide a paste having a consistency of about 20 mm to about 50 mm; and wherein the particulate material is present in an amount to provide a try-in paste of a shading that matches the shading of a corresponding polymerized dental cement.Type: GrantFiled: September 12, 2001Date of Patent: June 17, 2003Assignee: 3M Innovative Properties CompanyInventors: Mark S. Konings, Edward J. Winters
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Patent number: 6575752Abstract: A tooth surface treatment composition includes an acidic component which is at least one water-soluble acid in an aqueous solution, such that when the composition is applied to the tooth surface and not subsequently washed, it will increase the adhesiveness of the tooth structure. A method of treating a tooth structure includes contacting the tooth structure with such a composition.Type: GrantFiled: May 11, 2000Date of Patent: June 10, 2003Assignee: Dentsply DeTrey GmbHInventors: Kai Pflug, Gordon Brian Blackwell, Steven R. Jefferies, Hans Rolf Kase
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Patent number: 6572374Abstract: A dental bonding formulation provides a single application step in which a chelating agent present within the formulation is capable of complexing ions present in a dentinal tubule calcified deposit. The formulation has a pH of between 1.2 and 4 to promote complexation without inducing excessive dentin etch. A curable resin is also present in the formulation to seal the underlying dentin surface.Type: GrantFiled: June 13, 2001Date of Patent: June 3, 2003Assignee: Advantage Dental Products, Inc.Inventor: Joseph J. Pelerin
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Patent number: 6568937Abstract: To provide a root canal filling material, which is high in strength, is hardly bent, is easy for root canal filling operation, is properly deformed during press contact, is high in adhesion and superior in sealing properties between root canal filling material each other or between a root canal filling material and a root canal wall, and is provided with proper radiopacity, the root canal filling material is constructed of (A) 1 to 50% by weight of one or two or more thermoplastic resins selected from trans-polyisoprene, polyethylene, polypropylene, and a copolymer of polyethylene and polypropylene; (B) 0.1 to 20% by weight of a styrene block copolymer; (C) 0.1 to 10% by weight of a paraffin wax; and (D) 30 to 95% by weight of one or two or more inorganic fillers selected from zinc oxide, barium sulfate, zirconium oxide, and titanium oxide.Type: GrantFiled: August 14, 2001Date of Patent: May 27, 2003Assignee: GC CorporationInventors: Hiroshi Kamohara, Takaharu Takeshita
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Patent number: 6569408Abstract: Disclosed is a composition for delivering an oral care substance to the oral cavity, comprising: (a) an organosiloxane resin; (b) a volatile carrier capable of solubilizing the organosiloxane resin; (c) a rheology modifier; and (d) at least one oral care substance. The present invention is also directed to such compositions comprising: (a) an organosiloxane resin; (b) a fluid diorganopolysiloxane polymer; (c) a volatile carrier capable of solubilizing the organosiloxane resin and the fluid diorganopolysiloxane polymer; (d) a rheology modifier; and (e) at least one oral care substance.Type: GrantFiled: December 20, 2001Date of Patent: May 27, 2003Assignee: The Procter & Gamble CompanyInventors: Jiang Yue, Mark Matthew Crisanti, Satyanarayana Majeti, Steven Carl Burgess, Elizabeth Ann Reno, Li Li, Shekhar Mitra
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Patent number: 6566413Abstract: The invention relates to novel cyclic siloxane compounds of the following general formula (I): in which: n=0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 preferably 1, 2, 3, 4, 5; A=H or C1-C15 alk(en)yl, C3-C15 cycloalk(en)yl, C6-C12 aryl, C8-C18 alkaryl, where, in the said radicals, in each case one or more C atoms can be replaced by O, C═O, O(C═O), SiR2 and/or NR, R being an aliphatic radical with 1 to 7 C atoms, in which one or more C atoms can be replaced by O, C═O, and/or O(C═O); B=E or a linear, branched or polycyclic aliphatic- or aromatic-groups-containing hydrocarbon radical which links 2 to 10 of the cyclosiloxane radicals defined above, less B, to one another and contains 2 to 50 C atoms and additionally 0 to 30 other atoms from the group O, N, S, P, Si, Cl, F, Br, I and from which correspondingly 1 to 9, preferably 1 to 4 of the above defined cyclosiloxane radicals, less B, are pending; E=A or a polymerizable group G—Q—L, where oType: GrantFiled: September 19, 2001Date of Patent: May 20, 2003Assignee: 3M ESPE AGInventors: Wolfgang Weinmann, Joachim Zech, Oswald Gasser, Rainer Guggenberger, Gunther Eckhardt, Peter Bissinger, Wolfgang Soglowek
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Patent number: 6541040Abstract: The invention relates to a mixture for use as wound dressing, which comprises: a) paraffins complying with DAB and/or synthetic waxes selected from the group consisting of montan waxes, petroleum waxes, Fischer-Tropsch waxes, polyolefin waxes, petrolatum, wax alcohols, and oxidates of the aforementioned substances; b) at least one metal hydroxide. The mixture is stable on prolonged storage at room temperature and promotes collagen regeneration in vivo in cases of bone trauma.Type: GrantFiled: October 9, 1998Date of Patent: April 1, 2003Assignee: Ernst Milbauer KGInventor: Wolfgang Mühlbauer
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Patent number: 6521264Abstract: A solid powder product with a Ca/P ratio of between 1.40 and 1.90 is prepared from tricalcium phosphate and tetracalcium phosphate. An aqueous solution containing calcium ions and phosphate ions with a Ca/P ratio higher than 0.20 and lower than 0.50 is prepared. The aqueous solution and the solid powder product and optionally water are mixed to obtain a mixture with a liquid/solid weight ratio of between 0.30 and 0.65 and a resulting paste with a Ca/P ratio of between 1.50 and 1.67.Type: GrantFiled: January 11, 2000Date of Patent: February 18, 2003Assignee: TeknimedInventors: Jean-Louis Lacout, Zinèb Hatim, Michele Frache-Botton
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Patent number: 6512054Abstract: Methods for preparing free radical or visible light curable (VLC) acid-containing polymers in an aqueous solution are provided. In one embodiment, the method comprises reacting polymers having reactive carboxylic acid groups with a methacrylated oxazoline or oxazine, collectively referred to hereafter as “methacrylated unsaturated cyclic imino ethers,” in an aqueous solution at a temperature of from about 50° C. to about 75° C. In another embodiment, the method comprises an additional step of preparing the carboxylic acid-containing polymer in an aqueous solution and then reacting the carboxylic acid-containing polymer with the methacrylated cyclic imino ether in the aqueous solution. The present invention also relates to free radical or VLC acid-containing polymers, and dental restoratives that comprise such polymers. Methods of attaching an oxazoline or oxazine to a carboxylate group on a polymer in an aqueous solution are also provided.Type: GrantFiled: January 17, 2001Date of Patent: January 28, 2003Assignee: The Ohio State University Research FoundationInventors: Bill M. Culbertson, Scott R. Schricker
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Patent number: 6506815Abstract: A resin composition for denture is provided, which does not require operations for weighing, and mixing during the use; is free from involving of air bubbles; and when used for preparation of a denture base, is free from a reduction in physical properties and staining or discoloration with a lapse of time. Further, a completed denture has a high elastic energy value, is superior in impact resistance, and when applied with an impact or a stress as in the case of dropping, is not readily broken. The resin composition for denture base is in a one-paste state and is constructed by (a) a polymerizable monomer and/or oligomer having a modulus of elasticity at polymerization of 0.25 to 3.00 GPa, (b) an organic filler and/or an organic-inorganic composite filler having a modulus of elasticity of 0.25 to 3.00 GPa, and (c) a polymerization initiator made of a heat polymerization type polymerization initiator and/or a photopolymerization type polymerization initiator, and optionally, (d) an inorganic filler.Type: GrantFiled: September 10, 2001Date of Patent: January 14, 2003Assignee: GC CorporationInventors: Yutaka Shinozaki, Tomohiro Kumagai
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Patent number: 6506816Abstract: Dental resin cement materials having unique handling properties are provided that comprise a) filler, b) polymerizable resin, and c) a polymeric handling modifier that is dispersed in the polymerizable resin at 25° C. and that has a molecular weight of between about 500 and 100,000. Components a) b) and c) are present in an amount effective to achieve a Viscosity vs Shear Rate Curve that fits a power law model of F(x)=A xB. The correlation value of the material to this curve is greater than 0.85 for both the increasing and decreasing shear rate curves, and the value of B is less than about −0.01. Resin cements are also provided that comprise acid functionality and water, but which do not comprise an acid reactive filler. Such cements may be self etching, thereby avoiding the need to carry out a separate acid etch step.Type: GrantFiled: July 17, 1997Date of Patent: January 14, 2003Assignee: 3M Innovative Properties CompanyInventors: Paula D. Ario, Steven M. Aasen, Brian N. Holmes
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Patent number: 6506055Abstract: A method of reducing dentin sensitivity comprising: applying an effective amount of an acid to a dentin surface to form a treated surface; and administering an effective amount of an acidic oxalate to the treated surface so as to occlude dentinal tubules beneath the dentin surface. The method may optionally comprise the subsequent application of a suitable bonding agent. The invention further provides a kit for the treatment of dentin sensitivity, comprising a first container of an acid treatment composition, and a second container of an acidic oxalate composition.Type: GrantFiled: October 13, 1999Date of Patent: January 14, 2003Assignee: MCG Research InstituteInventors: David H. Pashley, Ricardo M. Carvalho, Jose C. Pereira
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Publication number: 20030008967Abstract: The invention relates to urethane prepolymers, obtainable by reaction of:Type: ApplicationFiled: June 14, 2002Publication date: January 9, 2003Inventors: Reinhold Hecht, Gunther Lechner, Thomas Lehmann, Gunther Eckhardt, Bernd Gangnus
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Patent number: 6500408Abstract: A dental bleach that includes a bleaching agent and a thickening agent. The bleaching agent is typically a peroxide and the thickening agent is polyvinylpyrrolidone. A viscous or sticky dental bleach results. Optionally, a basic agent, light or heat may be added to accelerate bleaching. Bleaching may take place with the use of a dental tray. Bleach may be placed into the dental tray from a single barrel, double barrel or multi-barrel syringe containing the components of the bleach. Bleach may be placed against a flexible strip which is placed onto teeth to be bleached.Type: GrantFiled: January 27, 2001Date of Patent: December 31, 2002Assignee: JC Technologies, Inc.Inventor: Tianming Chen
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Patent number: 6500004Abstract: Endodontic sealant compositions and methods for sealing a root canal using sealant or other filling materials. The compositions include one or more resins that promote adhesion to hydrophilic dental tissues. Examples include alkyl methacrylates and derivatives thereof, such as alkylamino methacrylates and oxyphosphoro methacrylates. The compositions include a radio opacifying agent, so that they may be seen using X-rays, and one or more polymerization initiators to effect curing, typically both chemical and photo initiators to yield a dual cure sealant composition. The compositions are introduced into the root canal using a narrow cannula coupled to a high pressure hydraulic delivery device. Additional pressure may be applied to the sealant compositions using a syringe-like plunger introduced within a cylindrical access hole drilled through the crown of the tooth.Type: GrantFiled: December 14, 2000Date of Patent: December 31, 2002Assignee: Ultradent Products, Inc.Inventors: Steven D. Jensen, Dan E. Fischer
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Patent number: 6500407Abstract: A method of forming a solution of oxalic acid potassium salt dihydrate, useful for desensitizing dentin, comprising the steps of admixing an effective amount of oxalic acid potassium salt dihydrate in water having a pH of 2.0-4.0, heating the solution at a temperature range from 85° F. to 100° F. until a suspension is formed, ultrasonically vibrating this suspension for an effective amount of time and frequency to reduce the oxalic acid potassium salt dihydrate to a particle size of 1 to 10 microns.Type: GrantFiled: April 29, 2002Date of Patent: December 31, 2002Inventor: Charles F. Cox
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Patent number: 6494716Abstract: An acid dental etch having improved taste, which comprises an acid in an amount effective to etch a surface of a tooth; a flavoring formulation that improves the flavor of the dental etch and is stable in the acid, in an amount that is effective in improving the flavor of the dental etch; and preferably, sufficient gelling agent to form a gel.Type: GrantFiled: November 27, 2000Date of Patent: December 17, 2002Inventors: Alma Dorn, Michelle Verhave, Joel Ross
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Publication number: 20020176826Abstract: A composition from 0° C. to 40° C. and from 0 percent to 100 percent humidity, comprising from 0.2 to 5 percent by weight of at least a peroxide which decomposes by at most fifty percent by weight of the peroxide within 10 hours at a temperature of at least 75° C., from 0.2 to 3 percent by weight of a metal containing material, from 0.1 to 3 percent by weight of a protected reducing agent. The protected reducing agent is adapted to form an active reducing agent, from 0 to 1 percent by weight of an amine. The composition is formed from peroxide stored at from 0° C. to 40° C. and from 0 percent to 100 percent humidity for at least 24 hours.Type: ApplicationFiled: October 18, 1999Publication date: November 28, 2002Inventors: DR. JOACHIM E. KLEE, UWE WALZ
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Patent number: 6472454Abstract: A two part composition for sealing and/or filling root canals. One or more elastomeric (meth)acrylate oligomers are mixed with one or more diluent comonomers, one or more radiopaque fillers and one or more polymerization initiator systems. One or more antimicrobial agents may also be included in the composition. The components are mixed, undergo a setting reaction and are subsequently cured. In use, the composition is easily removed from the tooth structure if rework is needed, yet provides a tight and effective seal in the root canal. The composition also has a desirable flowable consistency and exhibits good adhesiveness with a tooth substrate.Type: GrantFiled: September 8, 2000Date of Patent: October 29, 2002Assignee: Kerr CorporationInventor: Xuejun Qian
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Patent number: 6465541Abstract: Polymerizable composition that include: (a) a cationically active functional group; (b) an initiation system capable of initiating cationic polymerization of the cationically active functional group; and (c) a filler composition that includes various radiopacifying fillers in an amount sufficient to render the polymerizable composition radiopaque. Components (a), (b), and (c) are selected such that the polymerizable composition polymerizes to form a polymerized composition having a Barcol hardness, measured using a GYZJ-935 meter, of at least 10 within 30 minutes following initiation of the cationically active functional group are a reaction temperature of 25° C.Type: GrantFiled: July 3, 2001Date of Patent: October 15, 2002Assignee: 3M Innovative Properties CompanyInventors: Kathyrn R. Bretscher, Richard P. Rusin, Sumita B. Mitra, Janis R. Gust, Cheryl A. Hayne, Dwight W. Jacobs, David A. Kaisaki
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Patent number: 6458865Abstract: Photopolymerizable compositions are provided which are the reaction products of a vinyl ether, a photoinitiator system comprising an iodonium salt, a visible light sensitizer, and an electron donor compound. These monomeric/oligomeric compositions may also include epoxides, polyols, spiroorthocarbonates. One embodiment of the present invention is a polymerizable composition comprised of a vinyl ether, a spiroorthocarbonate, and a photoinitiator system. Another embodiment of the present invention is a polymerizable composition comprised of a vinyl ether, an epoxide, a polyol, and a photoinitiator system. Still another embodiment of the present invention is a polymerizable composition comprised of a vinyl ether, an epoxide, a polyol, a spiroorthocarbonate, and a photoinitiator system. Still further, another embodiment of the present invention is certain novel spiroorthocarbonate compounds. Each of these novel spiroorthocarbonate compounds include at least one epoxy group as a substituent.Type: GrantFiled: January 15, 1999Date of Patent: October 1, 2002Assignees: Curators of the University of Missouri, 3M Innovative Properties CompanyInventors: Cecil C. Chappelow, Charles S. Pinzino, J. David Eick, Joel D. Oxman
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Patent number: 6455608Abstract: Curable compositions comprising degradable macromonomers having one or more terminal acrylate or methacrylate functionality, a curing composition, and optionally one or more polymerizable acrylate or methacrylate comonomers. Degradable macromonomers are manufactured from cyclic monomers with compounds having acrylate or methacrylate functionality. Depending on their use, the degradable macromonomer compositions further comprise one or more organic or inorganic fillers, including a calcium-based compound and/or a radiopacity-imparting agent. The compositions are particularly suitable for root canal sealants, implants, and pulp capping materials.Type: GrantFiled: August 11, 2000Date of Patent: September 24, 2002Assignee: Jeneric/Pentron IncorporatedInventors: Weitao Jia, Shuhua Jin, Samuel Jien-shek Huang
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Patent number: 6455609Abstract: A fluoride-releasing dental amalgam composition for a tooth restoration comprising a dental amalgam alloy material and an fluoride-containing, the glass particulate powder component of a fluoride-leachable acid-etchable glass ionomer cement. The invention further provides a method for using the composition to prevent or reduce secondary caries in an existing tooth restoration, which is classified as a dental amalgam in nature.Type: GrantFiled: May 18, 2000Date of Patent: September 24, 2002Assignee: MCG Research Institute Medical College of GeorgiaInventors: Fred Rueggeberg, Gary Whitford, Don Mettenburg
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Patent number: 6451292Abstract: The present invention provides a method of utilizing a non-metallic composition to adhere one or more dental or orthodontic fixtures to hard dental tissue, wherein the non-metallic compositions harden in the mouth to form substantially permanent fixtures. The compositions comprise an amount of an essential oil effective to alter the sensory properties, i.e., the taste or smell, of the composition, and that desirably imparts a pleasant taste and/or odor. The essential oil further advantageously provides the composition, once hardened in the mouth, with a surface more hydrophobic than a corresponding composition, thereby inhibiting the deposition or formation of bacterial plaque.Type: GrantFiled: August 31, 2001Date of Patent: September 17, 2002Assignee: Dakota Dental Development, Inc.Inventors: John H. Warford, III, Edward C. Combe, John H. Warford, II
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Patent number: 6440398Abstract: A fluoride-releasing dental amalgam composition for a tooth restoration comprising a dental amalgam alloy material and an fluoride-containing, the glass particulate powder component of a fluoride-leachable acid-etchable glass ionomer cement. The invention further provides a method for using the composition to prevent or reduce secondary caries in an existing tooth restoration, which is classified as a dental amalgam in nature.Type: GrantFiled: August 13, 2001Date of Patent: August 27, 2002Assignee: MCG Research Institute, Medical College of GeorgiaInventors: Fred Rueggeberg, Gary Whitford, Don Mettenburg
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Publication number: 20020115042Abstract: A method of restoring a tooth is provided. method comprises the steps of dispensing a curable composition from an applicator and curing the curable composition. The applicator has a needle with a lumen The composition is injected into a hollow on the tooth to achieve a desired shape. The composition includes curable liquid resin portion and an inorganic filler portion. The curable liquid resin portion has a polymerizable binder resin.Type: ApplicationFiled: August 13, 2001Publication date: August 22, 2002Inventor: Robert W. Hasel
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Patent number: 6426373Abstract: Among other things, a photopolymerizing one-component dental material is prepared, containing: 1) 80-10 weight-% of at least one polyfunctional urethane methacrylate and/or at least one polyfunctional urethane acrylate, 2) 10-30 weight-% of at least one polyfunctional acrylate resin, 3) 10-30 weight-% of at least one reactive thinner, 4) 0-20 weight-% of bis-GMA and/or at least one ethoxylated bisphenol-A-dimethacrylate, 5) 0-10 weight-% of at least one filler, 6) 0-1 weight-% of at least one photoinitiator, and. 7) 0-1 weight-% of at least one color pigment.Type: GrantFiled: August 12, 1999Date of Patent: July 30, 2002Assignee: Heraeus Kulzer GmbH & Co. KGInventors: Frank Stange, Albert Erdrich, Novica Savic, Teresa Puchalska
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Patent number: 6410612Abstract: A denture rebase is provided, which includes: (a) an acrylic resin; (b) a fluoro(meth)acrylate having the formula (I): CH2═C(R1)COO—R2—Rf (I) wherein R1 represents a hydrogen atom or a methyl group; R2 represents an alkylene group; Rf represents a perfluoro alkyl group; R2+Rf has 4 to 10 carbon atoms in total, and wherein at least 50% of all atoms bonded to said carbon atoms constituting R2+Rf are fluorine atoms; (c) a polyfinctional (meth)acrylate; and (d) a polymerization initiator. The denture rebase is free from the serious problems associated with conventional denture rebases. The denture rebase resists discoloration and staining, and it is resistant to the absorption of odorous substances and water. It has good contamination resistance, and its cured product is tough.Type: GrantFiled: March 3, 2000Date of Patent: June 25, 2002Assignee: Kuraray Co., Ltd.Inventor: Kenji Hatanaka
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Patent number: 6406529Abstract: A method of reducing dentin sensitivity comprising: applying an effective amount of an acid to a dentin surface to form a treated surface; and administering an effective amount of an acidic oxalate to the treated surface so as to occlude dentinal tubules beneath the dentin surface. The method may optionally comprise the subsequent application of a suitable bonding agent. The invention further provides a kit for the treatment of dentin sensitivity, comprising a first container of an acid treatment composition, and a second container of an acidic oxalate composition.Type: GrantFiled: April 13, 1998Date of Patent: June 18, 2002Assignee: MCG Research InstituteInventors: David H. Pashley, Ricardo M. Carvalho, Jose C. Pereira
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Patent number: 6407148Abstract: A metal free dental filling system is provided which prevents the transmission of destructive forces from the shrinking filling material to the sealed dental hard tissue. The system prevents the transmission of destructive forces by making the bond of the cured adhesive sealant to the dental hard tissue, i.e., the enamel, dentin, and root cement, substantially stronger than the bond of the cured adhesive sealant to the filling material. An intermediate layer material may be arranged between the dental filling material and the cured adhesive sealant. If an intermediate layer is used, the bond between the dental hard tissue and the cured adhesive sealant is much stronger than the bond between the cured adhesive sealant and the intermediate layer in order to ensure that substantially no destructive forces are transmitted from the shrinking filing material to the cured adhesive material on the dental hard tissue. The intermediate layer may be removed prior to application of the filling material.Type: GrantFiled: May 15, 2000Date of Patent: June 18, 2002Assignee: 3M Espe AGInventors: Daniela Krejci, Ivo Krejci, Felix Lutz
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Patent number: 6403671Abstract: The invention relates to a polymerizable, cross-linkable composition which contains: (A) 1-99.99 wt.-% of at least one conversion product of OH-functional (meth)acrylates with (i) oligomers from unsaturated rings or heterocyclic rings and maleic anhydride and/or with (ii) at least one ring-shaped polycarboxylic acid with at least 4 ring-carbon atoms and/or the anhydrides thereof with a saturated ring system, at least 4 carboxyl groups, and 0 or 1 heterocyclic ring atoms from the group N, O, S, whereby at least one carboxyl group and/or anhydride group of the above described substance groups is reacted with unsaturated polymerizable groups; (B) 0 to 98.99 wt.-% of one or more polymerizable, unsaturated organic compounds with at least one CH2═C(R10)—COO-group, whereby R10 represents H or methyl; (C) 0.01 to 5 wt.-% initiators and optional activators; (D) 0 to 90 wt.-% common solvents; (E) 10 to 90 wt.Type: GrantFiled: March 6, 2000Date of Patent: June 11, 2002Assignee: ESPE Dental AGInventors: Robert May, Markus Mikulla, Peter Bissinger
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Patent number: 6403212Abstract: A moldable dental material composition comprising high-fusing temperature metal particles, a volatile binder, preferably in a concentration of above at least twenty percent (20%) of the material composition, and finely divided carbonaceous particles, preferably of activated carbon. The high-fusing temperature metal particles should have an irregular, nonspherical geometry and a thin cross-sectional average thickness. The moldable dental composition may also contain low-fusing temperature metal particles for enhanced wetting of the high-fusing metal particles during heat treatment at a heat-treatment temperature which will melt the binder and substantially melt the low-fusing metal particles, if present. Heat treatment forms a porous metal structure having a capillary network of voids and a high void volume.Type: GrantFiled: July 25, 1994Date of Patent: June 11, 2002Inventors: Itzhak Shoher, Aharon Eliyahu Whiteman