Dental compositions containing upconversion phosphors and methods of use
AssigneeDENTSPLY SIRONA Inc.
InventorsNaim Karazivan, Hui Lu, Thomas Ertl
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Abstract
A luminescent coating is disclosed that is used to dimensionally control the curing of a photocurable agent placed in close contact with the coating. The coating is applied at the interface of structures, such as brackets and prosthetics, or may be applied directly on a curable material for use in 3D printing, at the location where bonding material is needed to be cured. The luminescent coating irradiates from its structure the curing radiations necessary to photopolymerize the resin in response to a first radiation irradiated on its structure of a different wavelength.
Claims20
A luminescent coating composition comprising:
- a binder;
- and
- upconversion phosphors;
- wherein the upconversion phosphors emit radiation at a predetermined wavelength in a range of about 360 nm to 520 nm when the upconversion phosphors are irradiated with radiation having a wavelength of at least 780 nm;
- and
- wherein the binder comprises a (meth)acrylate resin binder selected from the group consisting of 2,2-bis[4-(2-hydroxy-3-methacryloyl oxypropoxy)phenyl] propane (Bis-GMA), 1,6-bis(2-methacryloxyethoxycarbonylamino)-2,4,4-trim ethyl hexane (UDMA), 2,2-bis[4-(methacryloyloxy-ethoxy)phenyl] propane (or ethoxylated bisphenol A-dimethacrylate) (EBPADMA), isopropyl methacrylate, triethyleneglycol dimethacrylate (TEGDMA), diethyleneglycol dimethacrylate, tetraethyleneglycol dimethacrylate, 3-(acryloyloxy)-2-hydroxypropyl methacrylate, 1,3-propanediol dimethacrylate, 1,6-hexanediol dimethacrylate (HDDMA), pentaerythritol triacrylate, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, and combinations thereof.
The luminescent coating composition of 7, wherein the trivalent rare earth ions are selected from the group consisting of ytterbium (Yb3+), lutetium (Lu3+), thulium (Tm3+), terbium (Tb3+), erbium (Er3+), praseodymium (Pr3+), and combinations thereof.
A method of attaching a dental article to the surface of a tooth comprising:
- providing the dental article to be attached to the surface of the tooth;
- applying a luminescent coating to a surface of the dental article configured to face toward the surface of the tooth, the luminescent coating having a luminescent coating composition comprising:
- a binder;
- and
- upconversion phosphors;
- wherein the upconversion phosphors emit radiation at an activation wavelength in a range of about 360 nm to 520 nm when the upconversion phosphors are irradiated with radiation having a wavelength of at least 780 nm;
- and
- wherein the binder comprises a (meth)acrylate resin binder selected from the group consisting of 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)phenyl] propane (Bis-GMA), 1,6-bis(2-methacryloxyethoxycarbonylamino)-2,4,4-trimethylhexane (UDMA), 2,2-bis[4-(methacryloyloxy-ethoxy)phenyl] propane (or ethoxylated bisphenol A-dimethacrylate) (EBPADMA), isopropyl methacrylate, triethyleneglycol dimethacrylate (TEGDMA), diethyleneglycol dimethacrylate, tetraethyleneglycol dimethacrylate, 3-(acryloyloxy)-2-hydroxypropyl methacrylate, 1,3-propanediol dimethacrylate, 1,6-hexanediol dimethacrylate (HDDMA), pentaerythritol triacrylate, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, and combinations thereof;
- applying to the surface of the tooth a dental cement composition comprising a polymerizable resin and a photoinitiator, the dental cement composition being substantially free of upconversion phosphors;
- placing the dental article on the surface of the tooth such that the luminescent coating comprising upconversion phosphors is adjacent the dental cement composition;
- irradiating the luminescent coating comprising upconversion phosphors with a radiation source that emits radiation at a predetermined fixed wavelength in a range of the electromagnetic spectrum that causes the upconversion phosphors to emit radiation at the activation wavelength of the photoinitiator such that the dental cement composition cures in a region adjacent the luminescent coating;
- and
- removing remaining uncured dental cement composition outside the dental article from the tooth.
Dependencies are inferred from the claim text.