Systems and methods for thermoforming dental aligners

Patent metadata

Field	Value
Publication number	US-11358323-B2
Application number	US-202016907760-A
Country	US
Kind code	B2
Filing date	Jun 22, 2020
Priority date	Nov 13, 2018
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

A system includes a plurality of assemblies each configured to support a dental mold and a material, a heating system configured to heat the material, a forming system configured to form a chamber encompassing the dental mold and at least a portion of the heated material, and to cause the heated material to form over the dental mold, and a conveyor system configured to move the plurality of assemblies from a loading area to the heating system, from the heating system to the forming system, and from the forming system to an unloading area.

First claim

What is claimed is:

1. A system comprising:
a heating system configured to heat a material of a dental assembly prior to the dental assembly being received by a forming system; and
the forming system configured to:
receive the dental assembly including a dental mold positioned on a support surface of the dental assembly and the material that has been heated;
form a chamber encompassing the dental mold and a first portion of the material by interfacing an upper component of the forming system with a second portion of the material that is pressed against the support surface of the dental assembly; and
cause at least part of the first portion of the material to form over the dental mold.

2. The system of claim 1 , wherein the chamber is airtight or substantially airtight.

3. The system of claim 1 , wherein the chamber is formed by contacting the second portion of the material between the upper component of the forming system and a component of the dental assembly.

4. The system of claim 1 , wherein the forming system comprises an actuator configured to cause the dental mold and the material to engage with one another.

5. The system of claim 4 , wherein the actuator is configured to cause the dental mold and the material to engage by at least one of moving the dental mold towards the material, moving the material towards the dental mold, or applying a vacuum to the chamber.

6. The system of claim 1 , further comprising:
a controller configured to control the heating system to heat the material above a temperature threshold or within a temperature range and to cause movement of the dental assembly from the heating system to the forming system.

7. A system comprising:
a dental assembly including a dental mold positioned on a support surface of the dental assembly and a material that has been heated, the dental assembly configured to support the material;
a heating system configured to heat the material of the dental assembly prior to the dental assembly being received by a forming system; and
the forming system configured to receive the dental assembly, to form a chamber encompassing the dental mold and a first portion of the material by interfacing with a second portion of the material, and to cause at least a dental aligner portion of the first portion of the material to form over the dental mold in the shape of a dental aligner, wherein the second portion of the material is a non-dental aligner portion of the material, and wherein the chamber is formed by contacting the second portion of the material between an upper component of the forming system and the support surface such that the second portion of the material is pressed against the support surface.

8. The system of claim 7 , wherein the chamber is airtight or substantially airtight.

9. The system of claim 7 , wherein the forming system is configured to apply vacuum suction to the chamber to cause the material to form over the dental mold.

10. The system of claim 7 , wherein the forming system is configured to apply pressure to the chamber to cause the heated material to compress onto the dental mold.

11. The system of claim 7 , wherein the forming system includes an actuator configured to cause the dental mold and the material to engage.

12. The system of claim 11 , wherein the actuator is configured to cause the dental mold and the material to engage by at least one of moving the dental mold towards the material, moving the material towards the dental mold, or applying a vacuum to the chamber.

13. The system of claim 7 , further comprising:
a conveyor system configured to move the dental assembly from the heating system to the forming system.

14. The system of claim 13 , further comprising:
a controller configured to control the heating system to heat the material above a temperature threshold or within a temperature range and to cause movement of the dental assembly from the heating system to the forming system.

15. A system for manufacturing dental aligners, the system comprising:
a heating system configured to heat a material of a dental assembly prior to the dental assembly being received by a forming system; and
the forming system comprising:
an upper component; and
an actuator configured to cause formation of a chamber encompassing a dental mold positioned on a support surface of the dental assembly and a first portion of the material that has been heated by the heating system by causing a second portion of the material to be pressed against the support surface and the upper component, wherein the actuator is configured to cause formation of the chamber by moving the dental mold and the material toward the upper component to press the second portion of the material onto the upper component and against the support surface, wherein the second portion of the material is a non-dental aligner portion of the material.

16. The system of claim 15 , wherein the actuator is configured to cause formation of the chamber by at least one of moving the dental mold towards the material, moving the material towards the dental mold, or applying a vacuum to the chamber.

17. The system of claim 15 , further comprising:
a vacuum system configured to apply vacuum suction to the chamber to cause the material to form over the dental mold.

18. The system of claim 15 , wherein the material is a polymeric material.

Assignees

• Sdc Us Smilepay Spv

Inventors

• Culp Clete
• Yancey Christopher
• Dargis John
• French Mark
• Pfeffer Daniel
• Cicurel Steve

Classifications

• B29C51/20

  having movable moulds or mould parts · CPC title

• A61C13/0027 Primary

  Base for holding castings · CPC title

• B29K2023/10

  Polymers of propylene · CPC title

• B29C51/02

  Combined thermoforming and manufacture of the preform · CPC title

• B29C51/24 Primary

  mounted on movable endless supports · CPC title