Patents Assigned to Bisco, Inc.
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Patent number: 11259997Abstract: A dental self-adhesive resin cement is provided comprising a two-component system. A first catalyst component includes one or more acidic monomers. A second base component includes one or more basic fillers. The mixture of the first and second components is polymerizable and has an initial pH that is acidic immediately after mixing and a pH of at least about pH 8 after polymerization.Type: GrantFiled: September 12, 2017Date of Patent: March 1, 2022Assignee: BISCO Inc.Inventors: Liang Chen, Byoung In Suh, Hong Shen, Christine Gleave
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Patent number: 9527931Abstract: A hydrophobic self-etch dental adhesive composition including a hydrophobic, surfactant-type acidic monomer. The composition may further include hydrophilic and hydrophobic monomers, preferably in a ratio of less than 1:1, and may include a solvent that is an azeotrope.Type: GrantFiled: February 16, 2012Date of Patent: December 27, 2016Assignee: Bisco, Inc.Inventors: Byoung I. Suh, Liang Chen
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Patent number: 9237988Abstract: The present application relates to dental adhesive and restoration compositions comprising benzalkonium chloride, having the general structure C6H5CH2N(CH3)2—R—Cl, and salts thereof in a range between approximately 0.01% and approximately 10% by weight in dental primer, dental adhesive, dental resin, and other dental polymeric compositions or in dental solutions. In particular, it has been shown that dental compositions comprising benzalkonium chloride result in the inhibition of the hydrolytic activity of MMP on the dentin adhesive layer, thereby reducing the degradation of bond strength between a resulting dental restoration and the underlying dental tissue.Type: GrantFiled: February 24, 2011Date of Patent: January 19, 2016Assignee: Bisco, Inc.Inventor: Byoung Suh
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Publication number: 20130217800Abstract: A hydrophobic self-etch dental adhesive composition including a hydrophobic, surfactant-type acidic monomer. The composition may further include hydrophilic and hydrophobic monomers, preferably in a ratio of less than 1:1, and may include a solvent that is an azeotrope.Type: ApplicationFiled: February 16, 2012Publication date: August 22, 2013Applicant: Bisco, Inc.Inventors: Byoung I. Suh, Liang Chen
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Patent number: 8106110Abstract: The present application relates to a dental primer adhesive system that is capable of being used as either a one-step or two-step self-etch dental primer and is compatible with self-cure composites and dual-cure composites with reduced permeability.Type: GrantFiled: January 29, 2008Date of Patent: January 31, 2012Assignee: Bisco, Inc.Inventors: Byoung Suh, Rui Yin, Michelle Schiltz-Taing
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Patent number: 8026297Abstract: The present application relates to a polymerizable dental primer/adhesive system comprising a primer component having a relatively hydrophilic monomer component in an amount that renders the system relatively hydrophilic before polymerization of the system and capable of penetrating a prepared dental surface such as etched tooth dentin or enamel, and a multi-functional cross-linking agent in an amount that renders the system relatively hydrophobic after polymerization. A polymerizable hydrophobic monomer component is also included in the primer. The inclusion of said hydrophobic polymerizable monomer and said multi-functional cross-linking agent improves the long term stability or durability of the polymerized primer system to the dental restoration and to the tooth, dentin, enamel and other dental surfaces. An additional hydrophobic resin can also be employed with the primer adhesive system.Type: GrantFiled: January 29, 2008Date of Patent: September 27, 2011Assignee: Bisco, Inc.Inventors: Byoung Suh, Rui Yin, Michelle Schiltz-Taing, Adriana Pigozzo Manso
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Publication number: 20100247738Abstract: The present application relates to a polymerizable dental adhesive system formulated for effective and durable bonding of zirconia based materials and restorations to dental resins and dental surfaces. According to one embodiment, a polymerizable dental adhesive system comprises a first acidic monomer comprising an ethylenically unsaturated polymerizable group or moiety of the general formula CH2?CX—C(O)— wherein X is hydrogen, methyl or a lower alkyl group, and the first polymerizable monomer further comprises a phosphoric or phosphonic acid group of general formula —OP(O)(OH)2, —OP(O)(OH), —C—P(O)(OH)2 and —C—P(O)(OH), and a second polymerizable acidic monomer comprises an ethylenically unsaturated polymerizable group or moiety of the general formula CH2?CX—C(O)— wherein X is hydrogen, methyl or a lower alkyl group, and wherein the second polymerizable acidic monomer further comprises a carboxylic acid group of the general formula —C(O)OH.Type: ApplicationFiled: March 27, 2009Publication date: September 30, 2010Applicant: Bisco, Inc.Inventors: Byoung I. Suh, Liang Chen
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Patent number: 7748980Abstract: The present invention relates to an apparatus for providing specifically metered doses of at least two flowable dental materials in desired ratios to one another. In particular, the present invention allows for controlled metering and dispensing of two or more flowable dental substances which when subsequently mixed form a dental bonding composition, dental adhesive, dental cement, or other dental restorative or preparative materials. Specifically, one embodiment of the present invention utilizes a multi-rack system as well as a drive spring action to provide a substantial mechanical advantage to the user such that a relatively long throw of the dispensing button creates a relatively short, metered distance of movement of the multiple racks and corresponding pistons in the each lumen of a cartridge containing the component of the desired dental composition, allowing for small, metered doses of each flowable dental component to be dispensed from the apparatus in the proper proportions.Type: GrantFiled: September 14, 2006Date of Patent: July 6, 2010Assignee: Bisco, Inc.Inventors: Paul Mulhauser, Karl D. Kirk, III, David Czarnecki, Richard Nagel
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Patent number: 7524889Abstract: Dental compositions and methods of curing the composition utilizing a light emitting diode (LED) curing unit. According to one aspect, a composition comprising a multiacrylate compound, an initiator including camphorquinone and at least one amine, and a colorless anti-yellowing agent produces a scratch free surface having no oxygen inhibited layer when cured with the LED curing unit.Type: GrantFiled: July 6, 2006Date of Patent: April 28, 2009Assignee: Bisco, Inc.Inventors: Li Feng, Byoung I. Suh
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Publication number: 20090105368Abstract: A water soluble polymer or biodegradable polymer operable to act as a release or separator between a prepared and sealed dentin surface and a temporary restoration.Type: ApplicationFiled: October 20, 2008Publication date: April 23, 2009Applicant: Bisco, Inc.Inventors: Byoung I. Suh, Jin Whan Lee
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Publication number: 20080318190Abstract: Dental pulp healing lining or capping compositions and methods of using the composition to treat an exposed, nearly exposed, or breached pulp chamber are disclosed herein. Embodiments include dental pulp healing lining or capping compositions comprising a resin portion having at least one hydrophilic monomer component and at least one hydrophobic monomer component and a calcareous material operable to both provide a biological seal and maintain an alkaline pH for extended periods. Further, light curable compositions are disclosed, allowing for improved curing properties, and allowing permanent restorations to be adhered to the sealed tooth without waiting a significant amount of time for the Portland cement portion to cure.Type: ApplicationFiled: February 20, 2008Publication date: December 25, 2008Applicant: Bisco, Inc.Inventors: Byoung Suh, Rui Yin, Mark Cannon, David E. Martin
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Publication number: 20080182922Abstract: The present application relates to a dental primer adhesive system that is capable of being used as either a one-step or two-step self-etch dental primer and is compatible with self-cure composites and dual-cure composites with reduced permeability.Type: ApplicationFiled: January 29, 2008Publication date: July 31, 2008Applicant: Bisco, Inc.Inventors: Byoung Suh, Rui Yin, Michelle Schiltz-Taing
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Publication number: 20080182921Abstract: The present application relates to a polymerizable dental primer/adhesive system comprising a primer component having a relatively hydrophilic monomer component in an amount that renders the system relatively hydrophilic before polymerization of the system and capable of penetrating a prepared dental surface such as etched tooth dentin or enamel, and a multi-functional cross-linking agent in an amount that renders the system relatively hydrophobic after polymerization. A polymerizable hydrophobic monomer component is also included in the primer. The inclusion of said hydrophobic polymerizable monomer and said multi-functional cross-linking agent improves the long term stability or durability of the polymerized primer system to the dental restoration and to the tooth, dentin, enamel and other dental surfaces. An additional hydrophobic resin can also be employed with the primer adhesive system.Type: ApplicationFiled: January 29, 2008Publication date: July 31, 2008Applicant: Bisco, Inc.Inventors: Byoung Suh, Rui Yin, Michelle Schiltz-Taing, Adriana Pigozzo Manso
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Publication number: 20080070187Abstract: The present invention relates to an apparatus for providing specifically metered doses of at least two flowable dental materials in desired ratios to one another. In particular, the present invention allows for controlled metering and dispensing of two or more flowable dental substances which when subsequently mixed form a dental bonding composition, dental adhesive, dental cement, or other dental restorative or preparative materials. Specifically, one embodiment of the present invention utilizes a multi-rack system as well as a drive spring action to provide a substantial mechanical advantage to the user such that a relatively long throw of the dispensing button creates a relatively short, metered distance of movement of the multiple racks and corresponding pistons in the each lumen of a cartridge containing the component of the desired dental composition, allowing for small, metered doses of each flowable dental component to be dispensed from the apparatus in the proper proportions.Type: ApplicationFiled: September 14, 2006Publication date: March 20, 2008Applicant: Bisco, Inc.Inventors: Paul Mulhauser, Karl D. Kirk, David Czarnecki, Richard Nagel
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Publication number: 20080009557Abstract: Dental compositions and methods of curing the composition utilizing a light emitting diode (LED) curing unit. According to one aspect, a composition comprising a multiacrylate compound, an initiator including camphorquinone and at least one amine, and a colorless anti-yellowing agent produces a scratch free surface having no oxygen inhibited layer when cured with the LED curing unit.Type: ApplicationFiled: July 6, 2006Publication date: January 10, 2008Applicant: Bisco, Inc.Inventors: Li Feng, Byoung I. Suh
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Patent number: 7087103Abstract: Methods for reducing the number and/or size of gas bubbles in a material are disclosed. The disclosed methods involve subjecting materials to pressure for a period of time. The methods have been found to be useful in the preparation of dental composites and dental structures prepared from those composites. Materials produced using the disclosed methods can have enhanced structural and/or aesthetic features.Type: GrantFiled: July 10, 2002Date of Patent: August 8, 2006Assignee: Bisco, Inc.Inventors: Byoung I. Suh, Steven J. Duray
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Patent number: 7081485Abstract: Dental composite formulations containing an initiator and a multiacrylate compound are disclosed. The formulations lack methyl methacrylate, a volatile, irritating, and potentially hazardous material commonly found in dental formulations. The multiacrylate compound has at least three acrylate functionalities per molecule. The formulations cure to form a surface lacking an oxygen inhibition layer. The formulations can be used as dental sealants, dental coatings, and in fingernail/toenail repair applications.Type: GrantFiled: August 21, 2002Date of Patent: July 25, 2006Assignee: Bisco, Inc.Inventors: Byoung I Suh, Li Feng
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Patent number: 6994551Abstract: Stable self-etching copolymerizable primer compositions 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: GrantFiled: February 14, 2003Date of Patent: February 7, 2006Assignee: Bisco, Inc.Inventors: Yantong J. Wang, Byoung I. Suh, Martin Hamer, Louis J. Sharp, Aleksandra Strukowska
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Publication number: 20050154081Abstract: Polymerizable compositions are described containing colored polymerization indicators which confer a visible color on the unpolymerized compositions. Upon polymerization, the compositions exhibit reduced or eliminated color. The compositions can also change their opacity during polymerization. The compositions provide easy visual differentiation between the unpolymerized compositions and substrates on which the compositions are placed. The compositions are useful in clinical and laboratory applications such as those involving teeth, dental implants, orthodontic materials, artificial teeth and bones.Type: ApplicationFiled: January 9, 2004Publication date: July 14, 2005Applicant: BISCO, INC.Inventors: Rui YIN, Byoung SUH, Oanh MAI, Keith HAYES, Louis SHARP
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Patent number: D563549Type: GrantFiled: September 30, 2005Date of Patent: March 4, 2008Assignee: Bisco, Inc.Inventors: Paul Mulhauser, Karl D. Kirk, III, David Czarnecki