Granted Patent B2

US 12,465,458 · App. 18/049,532 · Granted Nov 11, 2025

Inventors: James Sylvester Wratten, Jr. (Waterville, NY); Seyed Mehdi Roein Peikar (Carrollton, TX); Yuchen Xu (Dallas, TX); Muhammad Fawwad (Carrollton, TX)

Assignee: Brius Technologies, Inc.

A61C7/002A61C2007/004A61C7/145

Abstract

Claims (33)

1 . A method for manufacturing a shape forming fixture for setting a shape of an orthodontic appliance, the orthodontic appliance being configured to be secured to a plurality of brackets on a patient's teeth, the method comprising:

obtaining a treatment planning digital model characterizing the patient's teeth and the brackets on the patient's teeth in planned positions;

obtaining a current tooth arrangement digital model characterizing the patient's teeth and the brackets on the patient's teeth in actual positions after the brackets have been bonded to the patient's teeth;

for each bracket, determining a difference between a respective actual position of the bracket and a respective planned position of the bracket;

based on the determined difference, creating a shape forming fixture digital model, the shape forming fixture digital model comprising a plurality of securing portions positioned relative to one another to reflect the actual positions of the brackets; and

forming a physical shape forming fixture based on the shape forming fixture digital model.

2 . The method of claim 1 , wherein determining the difference comprises registering one of the patient's teeth from the treatment planning digital model to a respective one of the patient's teeth from the current tooth arrangement digital model.

3 . The method of claim 2 , wherein determining the difference comprises registering a crown of the one of the patient's teeth from the treatment planning digital model to a crown of the respective one of the patient's teeth from the current tooth arrangement digital model.

4 . The method of claim 1 , wherein the treatment planning digital model characterizes the patient's teeth in an original tooth arrangement.

5 . The method of claim 1 , wherein the treatment planning digital model characterizes the patient's teeth in a planned final tooth arrangement.

6 . The method of claim 1 , wherein the difference comprises a 4×4 transformation matrix.

7 . The method of claim 1 , wherein forming the shape forming fixture comprises investment casting the shape forming fixture.

8 . The method of claim 1 , wherein forming the shape forming fixture comprises forming the shape forming fixture by additive manufacturing.

9 . A method for manufacturing a shape forming fixture for setting a shape of an orthodontic appliance, the orthodontic appliance being configured to be secured to a plurality of brackets on a patient's teeth, the method comprising:

obtaining first data characterizing planned positions of the brackets relative to the patient's teeth;

obtaining second data characterizing actual positions of the brackets relative to the patient's teeth;

for each bracket, determining a difference between a respective actual position of the bracket and a respective planned position of the bracket; and

based on the determined difference, forming a shape forming fixture for setting a shape of the orthodontic appliance, the shape forming fixture comprising securing portions configured to retain a plurality of attachment portions of the orthodontic appliance, wherein the securing portions are positioned relative to one another based on the actual positions of the brackets.

10 . The method of claim 9 , further comprising obtaining third data characterizing a difference between each of the actual positions of the brackets and a corresponding one of the planned positions of the brackets.

11 . The method of claim 9 , wherein the first data characterizes the planned positions of the brackets relative to the patient's teeth in an original arrangement.

12 . The method of claim 9 , wherein the wherein the first data characterizes the planned positions of the brackets relative to the patient's teeth in a final arrangement.

13 . A method for manufacturing a shape forming fixture for setting a shape of an orthodontic appliance, the orthodontic appliance comprising a plurality of attachment portions configured to be secured to a plurality of brackets on a patient's teeth, the method comprising:

obtaining a final tooth arrangement (FTA) digital model characterizing the patient's teeth in a final arrangement with each of the brackets located at an intended position relative to a corresponding one of the patient's teeth;

creating a shape forming fixture digital model characterizing a shape forming fixture for setting a shape of the orthodontic appliance based on the FTA digital model, the shape forming fixture comprising securing portions configured to retain the attachment portions of the appliance at the intended positions of the brackets with the patient's teeth in the final arrangement;

obtaining an actual tooth arrangement (ATA) digital model characterizing the patient's teeth in an actual arrangement with each of the brackets located at an actual position relative to the corresponding one of the patient's teeth;

for each bracket, determining a difference between a respective actual position of the bracket and a recti ve planned position of the bracket;

modifying the securing portions of the shape forming fixture digital model based on the determined difference so that the securing portions are configured to maintain the attachment portions of the appliance at the actual positions of the brackets with the patient's teeth in the final arrangement; and

forming a physical shape forming fixture based on the shape forming fixture digital model with the modified securing portions.

14 . The method of claim 13 , wherein modifying the securing portions of the shape forming fixture digital model further comprises determining a difference between each of the actual positions of the brackets and each of the intended positions of the brackets.

15 . The method of claim 14 , wherein modifying the securing portions comprises moving the securing portions according to the differences between the actual positions of the brackets and the intended positions of the brackets.

16 . The method of claim 13 , further comprising obtaining an original tooth arrangement (OTA) digital model characterizing the patient's teeth in an original arrangement with each of the brackets located at the intended position relative to the corresponding one of the patient's teeth.

17 . The method of claim 13 , wherein the shape forming fixture further comprises a gingiva portion characterizing the patient's gingiva.

18 . The method of claim 17 , wherein the gingiva portion characterizes the patient's gingiva when the patient's teeth are in the OTA.

Assignments (1)

Continuity (3)

References Cited (400)