Method of attaching a dental article to the surface of the tooth

Patent metadata

Field	Value
Publication number	US-10238476-B2
Application number	US-201715584174-A
Country	US
Kind code	B2
Filing date	May 2, 2017
Priority date	Dec 31, 2013
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A method of attaching a dental article to the surface of a tooth includes providing the dental article and applying a coating including upconversion phosphors to a surface of the dental article. The method also includes applying a dental cement composition to the surface of the tooth and placing the dental article on the surface of the tooth such that the coating is adjacent the dental cement composition. The dental cement composition includes a polymerizable resin and a photoinitiator and is substantially free of upconversion phosphors. The method further includes irradiating the coating with a radiation source that emits radiation at a pre-determined fixed wavelength that causes the upconversion phosphors to emit radiation at an activation wavelength of the dental cement composition photoinitiator such that the dental cement composition cures in a region adjacent the coating and removing remaining uncured dental cement composition outside the dental article from the tooth.

First claim

What is claimed is:

1. A method of attaching a dental article to the surface of a tooth, the method comprising:
providing the dental article to be attached to the surface of the tooth;
applying a coating comprising upconversion phosphors to a surface of the dental article configured to face toward the surface of the tooth;
applying to the surface of the tooth a dental cement composition comprising a polymerizable resin and a photoinitiator, wherein the dental cement composition is substantially free of upconversion phosphors;
placing the dental article on the surface of the tooth such that the coating comprising upconversion phosphors is adjacent the dental cement composition;
irradiating the coating comprising upconversion phosphors with a radiation source that emits radiation at a pre-determined fixed wavelength in a range of the electromagnetic spectrum that causes the upconversion phosphors to emit radiation at an activation wavelength of the dental cement composition photoinitiator such that the dental cement composition cures in a region adjacent the coating; and
removing remaining uncured dental cement composition outside the dental article from the tooth.

2. The method of claim 1 , wherein the dental article is an orthodontic bracket.

3. The method of claim 2 , wherein the surface of the tooth is a labial surface of the tooth.

4. The method of claim 1 , wherein the dental article is a dental prosthetic.

5. The method of claim 4 , wherein the dental prosthetic is a crown.

6. The method of claim 1 , wherein the coating comprising upconversion phosphors further comprises a resin binder.

7. The method of claim 6 , wherein the coating comprising upconversion phosphors is at least 50% by weight upconversion phosphors.

8. The method of claim 1 , wherein the step of applying the coating to the surface of the dental article comprises coating an outer periphery of the surface of the dental article.

9. The method of claim 1 , wherein the step of applying the coating to the surface of the dental article comprises leaving an outer edge of the surface of the dental article uncoated.

10. The method of claim 1 , wherein the coating composition comprises a resin binder and wherein the resin binder of the coating composition is the same as the polymerizable resin of the dental cement.

11. The method of claim 1 , wherein the step of irradiation comprises irradiating the upconversion phosphors with near-infrared radiation having a wavelength in the range of about 780 nm to about 1064 nm.

12. The method of claim 1 , wherein the dental article is metallic, the method further comprising, after the step of removing remaining uncured dental cement composition outside the dental article from the tooth, irradiating the dental article with a blue light to cure any remaining uncured dental cement composition intermediate the labial surface of the tooth and the surface of the dental article.

Assignees

• Dentsply Sirona Inc

Inventors

• Karazivan Naim
• Lu Hui
• Ertl Thomas

Classifications

• A61K6/25

  Compositions for detecting or measuring, e.g. of irregularities on natural or artificial teeth · CPC title

• A61K6/30

  Compositions for temporarily or permanently fixing teeth or palates, e.g. primers for dental adhesives · CPC title

• A61K6/40

  Primers (for dental adhesives A61K6/30) · CPC title

• A61K6/822

  comprising rare earth metal oxides · CPC title

• A61K6/824

  comprising transition metal oxides · CPC title