Strong Adhesives for Effective Orthodontic Care

Introduction

This orthodontic adhesive technology offers a robust solution for securely attaching orthodontic appliances, such as braces and aligners, directly to teeth. Its unique composition enhances bonding strength while maintaining patient comfort, reducing the need for frequent adjustments or appliance failures during treatment. For companies in orthodontics and dental care, this technology provides a valuable opportunity to improve the quality of patient care by ensuring that orthodontic appliances remain firmly in place throughout treatment.

The Challenge: Ensuring Long-Lasting Bonding of Orthodontic Appliances

One of the key challenges in orthodontics is maintaining the bond between orthodontic appliances and the teeth throughout the duration of treatment. Poor adhesion can lead to detachment of appliances like brackets, increasing the risk of treatment delays, patient discomfort, and additional visits to the orthodontist. Furthermore, adhesives that do not provide a strong bond can result in unsatisfactory treatment outcomes. Orthodontic professionals need reliable adhesives that offer both strength and patient comfort, ensuring that appliances remain secure while promoting effective treatment progress.

Advanced Adhesive for Superior Bonding

This orthodontic adhesive is designed to meet these needs by delivering a high-strength bond between orthodontic appliances and teeth. The adhesive’s formulation allows it to adhere securely to the tooth surface, preventing detachment even under the pressures of daily wear and tear. The appliance remains stable, allowing orthodontists to focus on fine-tuning the treatment rather than managing frequent reattachments. The adhesive is also easy to apply, making it a convenient solution for both orthodontists and dental professionals. This advanced adhesive system improves the overall experience for patients by reducing the number of required adjustments and ensuring a smoother treatment process.

Key Benefits for Orthodontists and Patients

For orthodontic practices, this adhesive offers a way to enhance treatment reliability, reducing complications from loose or detached appliances. The stronger bonding properties minimize the need for frequent appointments to fix issues, saving time for both orthodontists and patients. Dental device manufacturers can benefit by integrating this adhesive into their appliances, offering a superior product that enhances both durability and performance. Patients will experience greater comfort and fewer disruptions in their treatment, leading to better outcomes and higher satisfaction.

Investing in Better Orthodontic Care

Licensing this strong orthodontic adhesive technology gives your organization an advantage in providing reliable, effective dental solutions. By ensuring that orthodontic appliances remain securely bonded, this technology supports more efficient treatments and improves patient experiences. It is a smart investment for companies looking to deliver high-performance, patient-focused solutions in orthodontics and dental care.

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Abstract
Claims

Orthodontic adhesives and packaged articles including an orthodontic appliance having a base for bonding the appliance to a tooth are disclosed. In the packaged articles, an adhesive is on the base of the appliance, and a container at least partially surrounds the orthodontic appliance having adhesive on the base thereof.

1. A packaged article comprising:

an orthodontic appliance having a base for bonding the appliance to a tooth;

a container at least partially surrounding the orthodontic appliance having adhesive on the base thereof.

2. The article of claim 1 wherein the adhesive has a static yield stress at 28° C. of at least about 7000 dynes/cm².

3. The article of claim 1 wherein the adhesive has a flow-out value of no greater than about 0.4 millimeters after one week at 40° C.

4. The article of claim 1 further comprising a release substrate comprising a surface in contact with the adhesive.

5. The article of claim 4 wherein the surface of the release substrate comprises a number of pores, and no more than about 50% by weight of the adhesive is within the pores.

6. The article of claim 4 wherein the release substrate comprises a foam.

7. The article of claim 1 wherein the container provides a barrier to the transmission of light and/or water vapor.

8. The article of claim 1 wherein the fluoride-releasing material is a filler.

9. The article of claim 1 wherein the base filler is selected from the group consisting of quartz filler, fluoroaluminosilicate glass, and combinations thereof.

10. The article of claim 9 wherein the base filler is a quartz filler and the quartz filler comprises a silane treated surface.

11. The article of claim 1 wherein the fumed silica comprises a silane treated surface.

12. The article of claim 1 wherein the fumed silica comprises a silicone fluid treated fumed silica.

13. The article of claim 12 wherein the silicone treated fumed silica comprises a poly(dimethylsiloxane) fluid treated fumed silica.

14. The article of claim 1 wherein the fumed silica filler is present at about 0.1% by weight to about 50% by weight, based on the total weight of the adhesive.

15. The article of claim 14 wherein the base filler is present at about 45% by weight to about 85% by weight, based on the total weight of the adhesive, and the fumed silica filler is present at about 0.2% by weight to about 15% by weight, based on the total weight of the adhesive.

16. The article of claim 15 wherein the base filler is present at about 75% by weight to about 83% by weight, based on the total weight of the adhesive, and the fumed silica filler is present at about 0.5% by weight to about 3% by weight, based on the total weight of the adhesive.

17. The article of claim 1 wherein the fumed silica has a surface area of about 70 m²/g to about 1000 m²/g.

18. The article of claim 17 wherein the fumed silica has a surface area of about 90 m²/g to about 500 m²/g.

19. The article of claim 18 wherein the fumed silica has a surface area of about 100 m²/g to about 150 m²/g.

20. The article of claim 1 wherein the fumed silica has an average aggregate length of about 0.01 micron to about 1 micron.

21. The article of claim 1 wherein the acidic component is a (meth)acryloyl substituted carboxyiic acid.

22. A packaged article comprising:

an orthodontic appliance having a base for bonding the appliance to a tooth;

an adhesive on the base of the appliance, the adhesive comprising a polymerizable component, a fluoride-releasing material, a hydrophilic component, a hardener, an acidic component, a base filler, a filler comprising a fumed silica having a surface area of at least about 70 m²/g, and a photobleachable dye, wherein the base filler is present at about 10% by weight to about 87% by weight, based on the total weight of the adhesive, and wherein the adhesive has an initial color prior to exposure to actinic radiation and a final color subsequent to exposure to actinic radiation, the initial color being different than the final color; and

a container at least partially surrounding the orthodontic appliance having adhesive on the base thereof.

23. The article of claim 22 wherein the acidic component is a (meth)acryloyl substituted carboxylic acid.

24. The article of claim 22 wherein the change in color from the initial color to the final color has a ΔE* value greater than about 20.

25. The article of claim 22 wherein the hardener comprises a sensitizing compound, an electron donor, and an iodonium salt.

26. The article of claim 22 wherein the photobleachable dye is selected from the group consisting of Rose Bengal, Methylene Violet, Methylene Blue, Fluorescein, Eosin Yellow, Eosin Y, Ethyl Eosin, Eosin bluish, Eosin B, Erythrosin B, Erythrosin Yellowish Blend, Toluidine Blue, 4′,5′-Dibromofluorescein, and combinations thereof.

27. The article of claim 22 wherein the final color is a tooth-like color or able to transmit the color of an underlying surface.

28. The article of claim 22 wherein the final color has a change in color, after aging for about 2 to about 4 days at about 37° C. under dark conditions, of no greater than about 16ΔE*.

29. A kit comprising:

a packaged article comprising an orthodontic appliance having a base for bonding the appliance to a tooth, an adhesive on the base of the appliance, and a container at least partially surrounding the orthodontic appliance having adhesive on the base thereof, wherein the adhesive comprises a polymerizable component, a fluoride-releasing material, a hydrophilic component, a hardener, an acidic component, a base filler, and a filler comprising fumed silica having a surface area of at least about 70 m²/g wherein the base filler is present at about 10% by weight to about 87% by weight, based on the total weight of the adhesive; and

instructions for using the orthodontic appliance.

30. The kit of claim 29 further comprising an etching composition.

31. A kit comprising:

a packaged article comprising an orthodontic appliance having a base for bonding the appliance to a tooth, an adhesive on the base of the appliance, and a container at least partially surrounding the orthodontic appliance having adhesive on the base thereof, wherein the adhesive comprises a polymerizable component, a fluoride-releasing material, a hydrophilic component, a hardener, an acidic component, a base filler, a filler comprising a fumed silica having a surface area of at least about 70 m²/g, and a photobleachable dye, wherein the base filler is present at about 10% by weight to about 87% by weight, based on the total weight of the adhesive, and wherein the adhesive has an initial color prior to exposure to actinic radiation and a final color subsequent to exposure to actinic radiation, the initial color being different than the final color; and

instructions for using the orthodontic appliance.

32. A method of bonding an orthodontic appliance to a tooth comprising:

providing a packaged article comprising an orthodontic appliance having a base for bonding the appliance to a tooth, an adhesive on the base of the appliance, and a container at least partially surrounding the orthodontic appliance having adhesive on the base thereof, wherein the adhesive comprises a polymerizable component, a fluoride-releasing material, a hydrophilic component, a hardener, an acidic component, a base filler, and a filler comprising fumed silica having a surface area of at least about 70 m²/g, wherein the base filler is present at about 10% by weight to about 87% by weight, based on the total weight of the adhesive;

removing the orthodontic appliance having adhesive on the base thereof from the container;

applying the base of the appliance to the tooth surface; and

exposing the adhesive to actinic radiation.

33. The method of claim 32 further comprising applying an etching composition to the tooth surface before applying the base of the appliance to the tooth surface.

34. The method of claim 32 wherein the appliance bonds to the surface of a moistened tooth with an adhesion of at least about 7 MPa.

35. A method of bonding an orthodontic appliance to a tooth comprising:

providing a packaged article comprising an orthodontic appliance having a base for bonding the appliance to a tooth, an adhesive on the base of the appliance, and a container at least partially surrounding the orthodontic appliance having adhesive on the base thereof, wherein the adhesive comprises a polymerizable component, a fluoride-releasing material, a hydrophilic component, a hardener, an acidic component, a base filler, a filler comprising a fumed silica having a surface area of at least about 70 m²/g, and a photobleachable dye, wherein the base filler is present at about 10% by weight to about 87% by weight, based on the total weight of the adhesive, and wherein the adhesive has an initial color prior to exposure to actinic radiation and a final color subsequent to exposure to actinic radiation, the initial color being different than the final color;

removing the orthodontic appliance having adhesive on the base thereof from the container;

applying the base of the appliance to the tooth surface; and

exposing the adhesive to actinic radiation.

36. A packaged adhesive comprising:

an adhesive comprising a polymerizable component, a fluoride-releasing material, a hydrophilic component, a hardener, an acidic component, a base filler, and a filler comprising a fumed silica having a surface area of at least about 70 m²/g, wherein the base filler is present at about 10% by weight to about 87% by weight, based on the total weight of the adhesive, and wherein the adhesive has a static yield stress at 28° C. of at least about 7000 dynes/cm²and a flow-out value of no greater than about 0.4 millimeters after one week at 40° C.; and

a release substrate comprising a surface in contact with the adhesive.

37. A packaged adhesive comprising:

an adhesive comprising a polymerizable component, a fluoride-releasing material, a hydrophilic component, a hardener, an acidic component, a base filler, a filler comprising a fumed silica having a surface area of at least about 70 m²/g, and a photobleachable dye, wherein the base filler is present at about 10% by weight to about 87% by weight, based on the total weight of the adhesive, and wherein the adhesive has an initial color prior to exposure to actinic radiation and a final color subsequent to exposure to actinic radiation, the initial color being different than the final color, and wherein the adhesive has a static yield stress at 28° C. of at least about 7000 dynes/cm²; and

a release substrate comprising a surface in contact with the adhesive.

Title

Orthodontic adhesives and appliances including an adhesive on the base of the appliance

Inventor(s)

Joan V. Brennan, Sumita B. Mitra, Mark S. Schaberg, Robert D. Kuehn, Joel D. Oxman, Darrell S. James, Sharon M. Rozzi, David K. Cinader

Assignee(s)

3M Innovative Properties Co

Patent #

6960079

Patent Date

November 1, 2005