By Filling, Bonding Or Cementing Patents (Class 433/226)
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Patent number: 6783810Abstract: A photopolymerizable material is exposed to light to effect curing. A portion of the material is exposed to light in a conventional manner, while at least one other portion of the material is masked from direct exposure to the light by use of a mask (10) having at least one mask segment (11) which either completely or at least partially blocks the light. In this manner, the polymerization stress associated with the cured materials is limited or minimized due to extended molecular relaxation promoted by this controlled or hybrid curing technique. Also according to the invention, different segments (30, 31) of a material to be cured (22) are exposed to different wavelengths of light energy (21) or one such segment (30, 31) is exposed to light energy while another such segment is not.Type: GrantFiled: March 15, 2001Date of Patent: August 31, 2004Assignee: Dentsply Research & Development Corp.Inventors: Xiaoming Jin, Paul D. Hammesfahr
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Patent number: 6783366Abstract: A method of finishing resin-based dental restorations by contouring and smoothing the surface of the dental restoration in a single step, using steel burs operating at low speed, high-torque.Type: GrantFiled: November 29, 2001Date of Patent: August 31, 2004Assignee: Mo R&D, Inc.Inventor: K. William Mopper
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Patent number: 6773261Abstract: 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: GrantFiled: June 28, 2002Date of Patent: August 10, 2004Assignee: 3M Innovative Properties CompanyInventors: Bradley D. Craig, Rajdeep S. Kalgutkar, Joel D. Oxman
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Publication number: 20040146838Abstract: A method, with requisite tools, for producing a boat-shaped adhesive crust, contoured for dental composite filling, including steps of:Type: ApplicationFiled: January 29, 2003Publication date: July 29, 2004Inventor: Martin Nugiel
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Patent number: 6756417Abstract: Dental bonding compositions and methods for promoting adhesion of an amalgam-based restorative material to a dental substrate. The inventive compositions include one or more polymerizable resins that are able to adhere to a dental substrate when at least partially polymerized, one or more polymerization photoinitiators in an amount so as to result in partial polymerization of the resin when the compositions are irradiated with radiant energy, and one or more chemical initiators (e.g., benzoyl peroxide) that cause further polymerization of the resin when the composition is contacted with an amalgam restorative. A bonding composition applied to a dental substrate and irradiated with radiant energy is more polymerized in a region adjacent to the dental substrate, while a less polymerized inhibition layer forms in the region of the surface. Packing an uncured amalgam into the dental preparation mechanically disrupts the inhibition layer so as to form peaks, troughs and other irregularities.Type: GrantFiled: March 13, 2002Date of Patent: June 29, 2004Assignee: Ultradent Products, Inc.Inventors: Peter M. Allred, Neil T. Jessop, Dan E. Fischer
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Publication number: 20040091839Abstract: A kit includes a group of predetermined components for enabling a dental hygienist or technician to perform non-invasive dental renewal procedures. The kit includes one or more abrasive devices, one or more restorative compositions, and one or more delivery tips for applying the restorative compositions. The abrasive device comprises one or more of a low-speed dental bur, a prophylaxis cup, brush, paste or jet. The kit may also include a delivery device, e.g., a syringe, or a storage device for storing the restorative composition.Type: ApplicationFiled: November 7, 2002Publication date: May 13, 2004Inventor: Dan E. Fischer
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Publication number: 20040086830Abstract: Temporary dental cements used to temporarily affix a dental prosthesis or appliance to a tooth or other dental substrate includes one or more soothing agent to prevent or reduce tooth sensitivity. The temporary dental cement includes a mixture of an ion leaching agent, polycarboxylic acid, a soothing agent and water. The soothing agent (e.g., 2-ethoxybenzoic acid and 2-methoxy-4-methylphenol) is added in an amount so as to reduce or eliminate tooth sensitivity associated with the reaction between the polycarboxylic and the ion leaching agent (base). The temporary cement composition is sufficiently hydrophilic that it can be readily removed from the tooth when it is desired to permanently restore the tooth.Type: ApplicationFiled: November 6, 2002Publication date: May 6, 2004Inventor: Peter M. Allred
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Patent number: 6729879Abstract: Dental bonding compositions and methods for promoting adhesion of an amalgam-based restorative material to a dental substrate. The inventive compositions include one or more polymerizable resins that are able to adhere to a dental substrate when at least partially polymerized, one or more polymerization photoinitiators in an amount so as to result in partial polymerization of the resin when the compositions are irradiated with radiant energy, and one or more chemical initiators (e.g., benzoyl peroxide) that cause further polymerization of the resin when the composition is contacted with an amalgam restorative. A bonding composition applied to a dental substrate and irradiated with radiant energy is more polymerized in a region adjacent to the dental substrate, while a less polymerized inhibition layer forms in the region of the surface. Packing an uncured amalgam into the dental preparation mechanically disrupts the inhibition layer so as to form peaks, troughs and other irregularities.Type: GrantFiled: March 13, 2002Date of Patent: May 4, 2004Assignee: Ultradent Products, Inc.Inventors: Peter M. Allred, Neil T. Jessop, Dan E. Fischer
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Patent number: 6719834Abstract: The invention relates to a single-component or multiple-component polyelectrolyte cement containing at least two reaction partners: (a) at least one metal-cation-releasing compound and (b) one or more polyelectrolytes capable of being converted into a solid state, wherein at least one of the polyelectrolytes is at least partially water soluble, and wherein at least a part of the reaction partner (a) and/or (b) is coated with an organic surface-coating agent. In one preferred embodiment, at least one part of the formulation constituents of the cement is present in granulated form, wherein at least a part of the reaction partner (b) serves as an essential granulation agent. The polyelectrolyte cement is particularly stable in storage and can be easily mixed.Type: GrantFiled: September 28, 2001Date of Patent: April 13, 2004Assignee: 3M ESPE AGInventors: Peter Braun, Jürgen Glaser, Hermann Nirschl, Klaus-Peter Stefan
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Publication number: 20040038178Abstract: A preparation (10, 11,12,13) to be fixed to a natural tooth part or tooth, in particular for the replacement of a load-bearing tooth part, is for example a filling for a drilled-out tooth (1), a crown, bridge or prosthesis to be placed on a tooth stub, or a tooth pin to be fixed in a tooth root for fastening an artificial tooth, a bridge or a prosthesis. The preparation has surface regions which consist of a material with thermoplastic properties. The preparation (10, 11, 12,13) is designed in a manner such that it has oscillation properties with such low damping losses that for a liquefaction of the material with thermoplastic properties by way of oscillations there are local stress concentrations required, and in a manner such that such stress concentrations only occur in the region of the preparation surface.Type: ApplicationFiled: April 17, 2003Publication date: February 26, 2004Applicant: WOODWELDING AGInventors: Jorg Mayer, Marcel Aeschlimann, Laurent Torriani
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Patent number: 6695617Abstract: There are disclosed amphoteric nano-sized metal oxide particles functionalized with silyl esters of a phosphonate and composites thereof with an acrylate-based monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Also disclosed are the method making such functionalized particular by reacting a metal oxide with a silyl ester of a phosphonate in the presence of a non-aqueous solvent and in an inert atmosphere and the method of making the composites wherein the functionalized particles are admixed with an acrylate-based matrix monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Further disclosed is the method of dental repair wherein the composites are applied to a tooth and photopolymerized.Type: GrantFiled: October 18, 2000Date of Patent: February 24, 2004Assignee: Southwest Research InstituteInventors: Stephen T. Wellinghoff, Hong Dixon, Henry R. Rawls, Barry K. Norling
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Publication number: 20040005524Abstract: Processes for forming dental materials that include applying a first hardenable dental composition (e.g., a dental adhesive) to a surface followed by applying a second hardenable dental composition (e.g., a dental composite) to the first hardenable dental composition on the surface. The first and second hardenable dental compositions are hardened such that the second hardenable composition is substantially completely hardened prior to complete hardening of the first hardenable composition.Type: ApplicationFiled: June 28, 2002Publication date: January 8, 2004Inventors: Joel D. Oxman, Bradley D. Craig, Rajdeep S. Kalgutkar, Marc Peuker, Peter Bissinger
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Patent number: 6652281Abstract: Dental materials containing monomers and/or prepolymers can be subjected to a polymer-forming reaction. The dental materials comprise at least one initiating system and optionally comprise fillers, colorants, flow modifiers, stabilizers, ion-releasing substances as well as compounds which increase X-ray capacity or other modifiers. The dental materials are characterized in that the initiating system is proportioned such that the dental materials are sufficiently capable of flowing for at least 10 seconds after exposure to oxygen, whereupon they subsequently harden into a solid material.Type: GrantFiled: February 5, 2002Date of Patent: November 25, 2003Assignee: 3M ESPE AGInventors: Gunther Eckhardt, Thomas Luchterhandt, Thomas Klettke
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Patent number: 6641398Abstract: Dental material containing a polymerizable component and a component applied superficially to the polymerizable component, which can be removed after the curing of the polymerizable material with accompanying formation of a rough surface.Type: GrantFiled: August 20, 2001Date of Patent: November 4, 2003Assignee: Ivoclar Vivadent AGInventors: Konrad Hagenbuch, Gerhard Zanghellini
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Publication number: 20030203339Abstract: A temporary crown, and variants thereof, including temporary bite caps and temporary facings, comprised of a shaped provisional (crown forms, onlays, veneers and variants thereof) and a resin filler; and a kit of provisionals, resin and auxiliary materials. The provisional has at least a partial bite layer that is integral with two opposing neighbour walls, a lingual wall and a buccal wall which, together, define a cavity to accept a tooth stub, the resin filler and optionally, a temporary adhesive. The resin filler is initially plastic and fills a void between the provisional and the tooth stub. The provisional and resin filler are selected for compatibility and cooperative curability such that following a suitable curing step, the inner layer of the provisional and the resin filler are substantially bound to and integral with one another. The provisional may have apertures through the bite layer and slits through the neighbour walls.Type: ApplicationFiled: July 9, 2002Publication date: October 30, 2003Inventor: Richard H. Chilibeck
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Patent number: 6635691Abstract: The invention relates to dental materials which contain filler and a polymerizable matrix and are characterized in that they additionally have a component which contracts during thermal treatment.Type: GrantFiled: August 20, 2001Date of Patent: October 21, 2003Assignee: Ivoclar Vivadent AGInventors: Gerhard Zanghellini, Konrad Hagenbuch
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Publication number: 20030186196Abstract: Self-etching copolymerizable primer compositions including are provided including compounds having a polymerizable ethylenically unsaturated groups and acidic groups, and optionally comonomers and suitable solvents. Such compositions are used in conjunction with dental adhesives to provide one or multi-component dental systems capable of etching or decalcifying tooth dentin and enamel without the need for a separate rinse step. Methods of use of such compositions according to the present invention include application for priming and imparting enhanced adhesion between the primers, adhesives, and the tooth substrates such as dentin or cut or uncut enamel, and subsequently applied dental composites, restoratives or other dental components.Type: ApplicationFiled: February 14, 2002Publication date: October 2, 2003Inventors: Yantong J. Wang, Byoung I. Suh, Martin Hamer, Louis J. Sharp, Aleksandra Strukowska
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Publication number: 20030186197Abstract: Dental bonding compositions and methods for promoting adhesion of an amalgam-based restorative material to a dental substrate. The inventive compositions include one or more polymerizable resins that are able to adhere to a dental substrate when at least partially polymerized, one or more polymerization photoinitiators in an amount so as to result in partial polymerization of the resin when the compositions are irradiated with radiant energy, and one or more chemical initiators (e.g., benzoyl peroxide) that cause further polymerization of the resin when the composition is contacted with an amalgam restorative. A bonding composition applied to a dental substrate and irradiated with radiant energy is more polymerized in a region adjacent to the dental substrate, while a less polymerized inhibition layer forms in the region of the surface. Packing an uncured amalgam into the dental preparation mechanically disrupts the inhibition layer so as to form peaks, troughs and other irregularities.Type: ApplicationFiled: March 13, 2002Publication date: October 2, 2003Applicant: Ultradent Products, Inc.Inventors: Peter M. Allred, Neil T. Jessop, Dan E. Fischer
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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: 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: 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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Publication number: 20030170593Abstract: Chair-side, modifiable, dental inlay preforms of highly durable material are bonded within mainly posterior teeth following removal of decay. These inlay preforms offer increased strength and resilience over direct composites while being faster, less costly and easier to place than indirect inlays. A kit of preforms containing multiple bins of various geometrical shapes and sizes are available to repair mainly molars and premolars in the upper and lower arches. The inlay preforms can be modified with standard acrylic and/or porcelain burs and inserted with standard dental bonding material. A removable grip eases the try-in process.Type: ApplicationFiled: March 11, 2002Publication date: September 11, 2003Inventor: Jeffrey Dorfman
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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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Publication number: 20030152891Abstract: A method and system for selectively staining dental composite materials includes an applicator (104) and a disclosing agent (102). In one embodiment, the applicator (104) provides the disclosing agent (102) to a tooth surface and a composite filling of the tooth. The composite filling is selectively stained to reveal the presence and location of the composite filling. In another embodiment, the tooth surface is selectively stained to reveal the presence and location of the composite filling.Type: ApplicationFiled: February 19, 2003Publication date: August 14, 2003Inventors: Paul C. Chiu, Catherine Hoffmann
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Patent number: 6602516Abstract: The ability to incorporate iodoform, tetracycline and a combination of iodoform/tetracycline into root canal gutta percha points is described. The iodoform, tetracycline and iodoform/tetracycline combination are bound within the gutta percha points. They act as a reservoir of antimicrobial that is capable of diffusing onto the surface of the gutta percha thereby inhibiting the colonization of bacteria on the gutta percha points and within the root canal system. Tetracycline is capable of coalescing within the dentinal tubules to inhibit long term microbial growth. These medicated gutta percha points are site specific, surface acting antimicrobial gutta percha points. A method of the usage and delivery of amorphous form iodoform gutta percha, iodoform/tetracycline gutta percha, or tetracycline gutta percha within a heated compule with a pressure plunger by delivering the thermo-softened heat labile amorphous form via a pressure extrusion system through a cannula into the prepared root canal system.Type: GrantFiled: November 2, 2000Date of Patent: August 5, 2003Inventor: Howard Martin
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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: 6593395Abstract: The present invention provides a dental composite which has the high strength required for load-bearing restorations, yet maintains a glossy appearance, even after substantial wear. Through the use of particles having a mean particle size between about 0.05 &mgr;m and about 0.50 &mgr;m, the composite is useful in stress bearing restorations and in cosmetic restorations. The structural filler used is typically ground to a mean particle size of less than 0.5 &mgr;m and also includes a nanofiller having discrete particles of a mean particle size less than 100 nm to improve handling and mechanical characteristics. The preferred dental composites maintain their surface finish even after substantial use and also have the strength properties of hybrid composite resins.Type: GrantFiled: May 16, 2001Date of Patent: July 15, 2003Assignee: Kerr CorporationInventors: Christos Angeletakis, Minh-Dang Son Nguyen
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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: 6579096Abstract: A method and system for selectively staining dental composite materials includes an applicator (104) and a disclosing agent (102). In one embodiment, the applicator (104) provides the disclosing agent (102) to a tooth surface and a composite filling of the tooth. The composite filling is selectively stained to reveal the presence and location of the composite filling. In another embodiment, the tooth surface is selectively stained to reveal the presence and location of the composite filling.Type: GrantFiled: August 7, 2001Date of Patent: June 17, 2003Inventors: Paul C. Chiu, Catherine Hoffmann
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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: 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: 6566418Abstract: A calcium hydroxide-based root canal filling material having superior bioaffinity is provided, which is a temporary root canal filling material to be used in the root canal treatment of teeth, having such roles that, when filled temporarily in the root canal, it stays in an affected part during a predetermined period of time, thereby a root canal being prevented from staining by pathogenic bacteria or exudates, has corrosion resistance, and promotes the remedy of an apical abscess by wound of the root apex portion. The calcium hydroxide-based root canal filling material is comprised of 3 to 20% by weight of polyvinylpyrrolidone and/or polyvinyl methyl ether, 30 to 60% by weight of calcium hydroxide, and 35 to 60% by weight of water. Further, there is an embodiment in which from 5 to 20 parts by weight of at least one X-ray opacity medium selected from barium sulfate, zirconium oxide, bismuth subnitrate, bismuth trioxide, and bismuth carbonate and/or 0.Type: GrantFiled: January 25, 2001Date of Patent: May 20, 2003Assignee: GC CorporationInventors: Yohji Imai, Masao Abiru
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Patent number: 6547566Abstract: A method of restoring a tooth using a dental construct of the type wherein the construct is placed onto the tooth using a dental cement to bond the construct to the tooth. After placement of the construct onto the tooth, excess cement is removed with a soft, pointed brush. The dental margins are then brushed with a photocurable dental resin cement which is the same as or different from the dental cement used to bond the construct to the tooth. The resin cement is then light cured.Type: GrantFiled: February 8, 2001Date of Patent: April 15, 2003Assignee: Dentsply Research & Development Corp.Inventors: Cornelis Pameijer, Daniel Fortin, Steven R. Jefferies
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Patent number: 6503084Abstract: A method of venting during sealing the cartridge. The cartridge body has an external wall, a generally cylindrical internal chamber wall having an internal chamber wall diameter and enclosing a cartridge chamber, and at least one channel wall forming a channel (or groove) in the chamber wall. The piston has a generally cylindrical plug wall positioned adjacent to the generally cylindrical internal chamber wall. The cylindrical plug wall has a diameter substantially equal to the diameter of the cylindrical internal chamber wall. Dental material is conveyed into the cartridge chamber. The piston is pressed into the cartridge chamber while venting gas from the cartridge chamber through the channel prior to forming a hermetic seal around the dental material in the cartridge chamber.Type: GrantFiled: August 2, 2001Date of Patent: January 7, 2003Assignee: Dentsply DeTrey G.m.b.H.Inventors: Markus Evers, Uwe Walz, Andreas E. Grützner, Joachim E. Klee
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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: 6461159Abstract: A dental mixing pad whose mixing surface side is constituted by a color having a low reflectance of a light having a wavelength of 470 nm±80 nm, is disclosed. It is preferred that the color having a low reflectance of a light having a wavelength of 470 nm±80 nm, which constitutes the mixing surface side of the dental mixing pad, is satisfied with at least one of the following requirements: that is, in a standard illuminant D65, L* is 80 or less, and C* is less than 20; L* is 80 or less, and h is 50°±80°; and L* is 30 or less, when expressed by an L*C*h color space.Type: GrantFiled: February 8, 2000Date of Patent: October 8, 2002Assignee: GC CorporationInventors: Akiyoshi Kotaka, Takeo Sasaki, Makoto Michiaki
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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: 6450717Abstract: An applicator kit, for dental purposes. has an application element with a grip area for handling, and also has a shaft, on a tip of which is disposed an application member, preferably in the form of a micro-brush that is provided with a reaction substance. A cup shaped sealing mechanism surrounds the shaft and the application member. The cup shaped sealing mechanism is slidably received within a housing which also receives a low velocity fluid initially spaced away from the cup-shaped sealing mechanism. The reaction substance on the application member is activated by pressing the sealing mechanism and application member into the fluid within the housing which causes the fluid to wet the application member.Type: GrantFiled: October 24, 2000Date of Patent: September 17, 2002Assignee: Ivoclar AG.Inventors: Ulrich Salz, Andre Rumphorst, Alexandros Gianasmidis, Frank Muller, Volker Rheinberger
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Publication number: 20020119424Abstract: The present invention relates to a method for preparing provisional veneers for human teeth. An impression matrix of the teeth-receiving provisional veneers is created and the teeth prepared by removal of the enamel to an appropriate depth. The impression matrix is then trimmed to expose the cervical portion of the prepared teeth. The shells of the impression matrix corresponding to each of the prepared teeth are filled with a flowable composite resin and the filled impression matrix is seated over the prepared teeth. The excess flowable composite resin is removed from the cervical portion of the prepared teeth and the remaining flowable composite resin is cured to form the incisal portion of the provisional veneers. The cervical portion of the provisional veneers is then free-form sculpted by applying a sculptable composite resin to the prepared teeth, then curing the sculptable composite resin. The provisional veneers are then fine-finished and polished.Type: ApplicationFiled: February 23, 2001Publication date: August 29, 2002Inventors: Robert C. Margeas, Robert L. Nixon
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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: 6409508Abstract: This invention concerns the use of ozone in the treatment of dental caries.Type: GrantFiled: November 8, 2000Date of Patent: June 25, 2002Assignee: Natural WhiteInventor: Edward Lynch
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Publication number: 20020068259Abstract: A method and system for selectively staining dental composite materials includes an applicator (104) and a disclosing agent (102). In one embodiment, the applicator (104) provides the disclosing agent (102) to a tooth surface and a composite filling of the tooth. The composite filling is selectively stained to reveal the presence and location of the composite filling. In another embodiment, the tooth surface is selectively stained to reveal the presence and location of the composite filling.Type: ApplicationFiled: August 7, 2001Publication date: June 6, 2002Inventors: Paul C. Chiu, Katherine Hoffman
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Patent number: 6376742Abstract: The present invention relates generally to the utilization of in situ polymers or copolymers to form a porous microcellular scaffold for the delivery, attachment, housing, protection, multiplication and growth of encapsulated cells. More particularly, the present invention relates to cells delivered using such a scaffold to augment, repair or replace in vivo diseased, damaged or otherwise compromised tissues or organs of a living body.Type: GrantFiled: February 17, 2000Date of Patent: April 23, 2002Inventors: Richard J. Zdrahala, Ivanka J. Zdrahala
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Patent number: 6375894Abstract: A metallic composite solid, containing alloys and/or intermetallics, is formed by compacting at moderate pressure a mixture of powder particles, foils or sheets at a temperature close to room temperature, well below the melting temperature of the constituent components and without the addition of low melting metals such as mercury, indium or gallium acting as a sintering agent. This low temperature consolidation of the powder mixture is enhanced by having the surface oxide of the powder particles removed, prior to consolidation, and/or by coating the particles with an oxide-replacing metal such as silver or gold. The coating process may be replacement reactions, autocatalytic reduction or electrolytic reduction. The composite formation is assisted by the addition of a liquid acid such as fluoroboric acid, sulfuric acid, fluoric acid, adipic acid, ascorbic acid, or nitric acid.Type: GrantFiled: May 9, 1995Date of Patent: April 23, 2002Assignees: The United States of America as represented by the Secretary of Commerce, American Dental Association Health FoundationInventors: David S. Lashmore, Moshe P. Dariel, Christian E. Johnson, Menahem B. Ratzker, Anthony A. Guiseppetti, Frederick C. Eichmiller, Glenn L. Beane, David R. Kelley
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Publication number: 20020031746Abstract: A Dental Prosthesis comprising a metal structure and a tooth-like outer layer whereby the entire Dental Prosthesis is completed in just one dental visit. A refractory model is provided and a formable metal of a higher melting temperature is shaped on the refractory model to the general shape of the metal structure. The formable metal is joined by applying metal of a lower melting temperature, flux and heat to melt the metal of a lower melting temperature, and to fill and cover the formable metal to form the metal structure which is then made ready to receive the tooth like outer layer. The tooth like outer layer is formed on the metal structure and finished to form the Dental Prosthesis.Type: ApplicationFiled: August 30, 2001Publication date: March 14, 2002Inventor: Oral Fatih Sekendur
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Patent number: 6355585Abstract: A glass powder for glass ionomer cement is disclosed, containing a glass powder for glass ionomer cement having a shape in which a major axis length is from 3 to 1,000 times a minor axis length, in a glass powder for glass ionomer cement. The glass powder for glass ionomer cement having a shape in which a major axis length is from 3 to 1,000 times a minor axis length is a fibrous glass having a minor axis length of from 0.1 to 100 &mgr;m and a major axis length of 500 &mgr;m or less, and its content is within a range of from 0.1 to 80% by weight, being enable to provide a glass ionomer cement set material having a high mechanical strength, particularly bending strength and tensile strength.Type: GrantFiled: February 29, 2000Date of Patent: March 12, 2002Assignee: GC CorporationInventors: Yoshimasa Suzuki, Masaaki Kaneko, Kaori Okada, Kazuo Hirota
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Patent number: 6338751Abstract: A novel silica based bioactive glass composition that can be used in conjunction with a delivery agent such as a toothpaste, gel saliva, etc. having a particle size range <90 &mgr;m which will form a rapid and continuous reaction with body fluids due to the immediate and long term ionic release of Ca and P from the core silica particles, to produce a stable crystalline hydroxy carbonate apatite layer deposited onto and into the dentin tubules for the immediate and long term reduction of dentin hypersensitivity.Type: GrantFiled: March 31, 1998Date of Patent: January 15, 2002Assignees: USBiomaterials Corp, University of Maryland, BaltimoreInventors: Leonard J. Litkowski, Gary D. Hack, David C. Greenspan
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Patent number: 6320162Abstract: The present invention is a method for enhancing the cure of photocurable dental restorative composite(s) containing unreactive monomer(s) and filler upon exposure to light radiation comprising the steps of preheating the photocurable dental restorative composite(s) to an elevated temperature above ambient prior to said exposure to light radiation during clinical usage. The heating assembly of the present invention may be used to preheat any dental material(s) stored in one or more compules to an elevated temperature above ambient prior to clinical usage.Type: GrantFiled: August 25, 2000Date of Patent: November 20, 2001Inventor: Joshua Friedman
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Patent number: 6315567Abstract: 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: GrantFiled: May 18, 1999Date of Patent: November 13, 2001Assignee: Abco Research, LLCInventor: Robert W. Hasel
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Patent number: 6315566Abstract: Dental materials are provided comprising Component i), which is a hydrogen bondable compound that is a polymer having a molecular weight greater than about 10,000, and Component ii), which is a hydrogen bondable bridging compound. One of Components i) and ii) contains 2 or more hydrogen-bond donor sites per compound, and the other of Components i) or ii) contains 2 or more hydrogen-bond acceptor sites per compound, which hydrogen-bond acceptor sites are not capable of also acting as hydrogen-bond donor sites. Components i) and ii) are present in an amount sufficient to exhibit at least 10% higher Relative Viscosity, and optionally at least one of i) or ii) is polymerizable. If the material contains any compounds having only one hydrogen-bond donor site or hydrogen-bond acceptor site per compound, the ratio of hydrogen-bond donor sites on compounds having only one hydrogen-bond donor site to hydrogen-bond donor sites on compounds having 2 or more hydrogen-bond donor sites per compound is less than 0.Type: GrantFiled: May 18, 1999Date of Patent: November 13, 2001Assignee: 3M Innovative Properties CompanyInventors: Byron Ciping Shen, Sumita B. Mitra, Xiaodong Zhang, Robert D. Kuehn