IP Library Granted Patent US 9,554,971
Granted Patent B2
US 9,554,971 · App. 14/377,313 · Granted Jan 31, 2017

Nanostructured antibacterial and remineralizing dental bonding agents and dental bonding systems

Inventors: Huakun Xu (Frederick, MD); Michael Weir (Silver Spring, MD)
Assignee: UNIVERSITY OF MARYLAND, BALTIMORE
A61K6/0067A61K6/0023A61K6/02A61K6/024A61K6/0235
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Quick Facts
Patent No.
US 9,554,971
App. No.
14/377,313
Granted
Jan 31, 2017
Kind
B2
Abstract

The present invention provides dental bonding agents and dental bonding systems comprising the dental bonding agents. The dental bonding agents of the invention are characterized by having antibacterial properties, and in some aspects of the invention, remineralizing properties.

Claims (14)

1. A dental bonding system comprising (i) a dental primer and (ii) a dental adhesive, wherein the dental primer comprises a primer and one or more antibacterial agents and wherein the dental adhesive comprises an adhesive and one or more antibacterial agents, wherein one or more of the antibacterial agents of the dental primer and/or the dental adhesive is an antibacterial monomer selected from the group consisting of dimethylamino hexyl methacrylate (DMAHM), dimethylamino heptyl methacrylate (DMAHPM), dimethylamino octyl methacrylate (DMAOM), dimethylamino nonyl methacrylate (DMANM), dimethylamino decyl methacrylate (DMADM), dimethylamino undecyl methacrylate (DMAUDM), dimethylamino dodecyl methacrylate (DMADDM), dimethylamino tridecyl methacrylate (DMATDM), dimethylamino tetradecyl methacrylate (DMATTDM), dimethylamino pentadecyl methacrylate (DMAPDM), dimethylamino hexadecyl methacrylate (DMAHDM), dimethylamino heptadecyl methacrylate (DMAHPDM), dimethylamino octadecyl methacrylate (DMAODM), dimethylamino nonadecyl methacrylate (DMANDM), dimethylamino icosyl methacrylate (DMAIOM), dimethylamino henicosyl methacrylate (DMAHOM), and dimethylamino docosyl methacrylate (DMADOM).

2. The dental bonding system of claim 1 , wherein the primer comprises one or more primers selected from the group consisting of bisphenol A diglycidyl methacrylate (Bis-GMA), glycerol dimethacrylate (GDMA), 2-hydroxyethyl methacrylate (HEMA), mono-2-methacryloyloxyethyl phthalate (MMEP), methacrylic acid (MA), methyl methacrylate (MMA), 4-acryloyloxyethyl trimellitate anhydride (4-AETA), N-phenylglycine glycidyl methacrylate (NPG-GMA), N-tolylglycine glycidyl methacrylate or N-(2-hydroxy-3-((2-methyl-1-oxo-2-propenyl)oxy)propyl)-N-tolyl glycine (NTG-GMA), pyromellitic diethylmethacrylate or 2,5-dimethacryloyloxyethyloxycarbonyl-1,4-benzenedicarboxylic acid (PMDM), pyromellitic glycerol dimethacrylate or 2,5-bis(1,3-dimethacryloyloxyprop-2-yloxycarbonyl)benzene-1,4-dicarboxylic acid (PMGDM), and triethylene glycol dimethacrylate (TEGDMA).

3. The dental bonding system of claim 1 , wherein the primer comprises (a) 35-45% 2-hydroxyethylmethacrylate (HEMA), 10-20% copolymer of acrylic and itaconic acids, 40-50% water, or the primer comprises (b) PMGDM/HEMA at 3.3/1 ratio+1% BAPO+50% acetone.

4. The dental bonding system of claim 1 , wherein the adhesive comprises one or more adhesives selected from the group consisting of ethoxylated bisphenol A glycol dimethacrylate (Bis-EMA), bisphenol A diglycidyl methacrylate (Bis-GMA), 2-hydroxyethyl methacrylate (HEMA), triethylene glycol dimethacrylate (TEGDMA), urethane dimethacrylate (UDMA), 4-methacryloyloxyethyl trimellitate anhydride (4-META), methacrylic acid (MA), methyl methacrylate (MMA), 4-acryloyloxyethyl trimellitate anhydride (4-AETA), ethyleneglycol dimethacrylate (EGDMA), glycerol dimethacrylate (GDMA), glycerol phosphate dimethacrylate (GPDM), pyromellitic glycerol dimethacrylate or 2,5-bis(1,3-dimethacryloyloxyprop-2-yloxycarbonyl)benzene-1,4-dicarboxylic acid (PMGDM).

5. The dental bonding system of claim 1 , wherein the adhesive comprises (a) 60-70% BisGMA and 30-40% HEMA, or the adhesive comprises (b) BisGMA/TEGMA at 7/3 ratio+1% BAPO.

6. The dental bonding system of claim 1 , wherein a further antibacterial agent present in the dental primer is selected from the group consisting of, silver-containing nanoparticles (NAg), quaternary ammonium salts (QAS), chlorhexidine particles, TiO2 particles and ZnO particles, and wherein a further antibacterial agent present in the dental adhesive is selected from the group consisting of, silver-containing nanoparticles (NAg), quaternary ammonium salts (QAS), chlorhexidine particles, TiO2 particles and ZnO particles.

7. The dental bonding system of claim 1 , wherein when the antibacterial monomers are selected from the group consisting of DMADDM, DMATDM, DMATTDM, DMAPDM and DMAHDM.

8. The dental bonding system of claim 1 , wherein the combined amount of antibacterial monomers present in the dental primer or the dental adhesive ranges from about 2.5% to about 12.5% of the mass of the dental primer or the dental adhesive.

9. The dental bonding system of claim 6 , wherein when the one or more antibacterial agents include NAg, NAg is present in the dental primer or the dental adhesive in an amount ranging from about 0.05% to about 1% of the mass of the dental primer or the dental adhesive.

10. The dental bonding system of claim 6 , wherein when the one or more antibacterial agents include QAS, QAS is present in the dental primer or the dental adhesive in an amount ranging from about 3% to about 15% of the mass of the dental primer or the dental adhesive.

11. The dental bonding system of claim 1 , wherein the dental primer or the dental adhesive, or both, further comprises a remineralizing agent.

12. The dental bonding system of claim 11 , wherein the remineralizing agent is nanoparticles of amorphous calcium phosphate (NACP) present in the dental primer or the dental adhesive in an amount ranging from about 5% to about 45% of the dental primer or the dental adhesive.

13. The dental bonding system of claim 1 , wherein the dental bonding system is a two-component dental bonding system, a three-step dental bonding system, a two-step dental bonding system or a one-step self-adhesive bonding system.

14. The dental bonding system of claim 7 , wherein the combined amount of antibacterial monomers present in the dental primer or the dental adhesive ranges from about 2.5% to about 12.5% of the mass of the dental primer or the dental adhesive.

Assignments (2)
CONFIRMATORY LICENSE Recorded Sep 18, 2014
From: THE UNIVERSITY OF MARYLAND, BALTIMORE
To: NATIONAL INSTITUTES OF HEALTH (NIH), U.S. DEPT. OF HEALTH AND HUMAN SERVICES (DHHS), U.S. GOVERNMENT
Reel/Frame 033763/0987 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 7, 2014
From: XU, HUAKUN; WEIR, MICHAEL
To: UNIVERSITY OF MARYLAND, BALTIMORE
Reel/Frame 033487/0141 →
Continuity (3)
Provisional Application 61597345 · Feb 10, 2012
Provisional Application 61714520 · Oct 16, 2012
Related Publication 20160058675A1 · Mar 3, 2016