Polyurethane rubber arch wire

JP2026084623APending Publication Date: 2026-05-21森淳一郎

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Patent Information

Authority / Receiving Office: JP · JP
Patent Type: Applications
Current Assignee / Owner: 森淳一郎
Filing Date: 2024-11-11
Publication Date: 2026-05-21

AI Technical Summary

Technical Problem

Existing orthodontic arch wires made of stainless steel and nickel-titanium lack the necessary pulling force for effective tooth movement, particularly posterior movement, and pose issues for patients with metal allergies, necessitating additional traction devices and caution in use.

Method used

Development of a polyurethane rubber arch wire that possesses elasticity and tensile force, providing inherent traction, aesthetic inconspicuousness, and compatibility for patients with metal allergies, mimicking shape memory properties.

Benefits of technology

The polyurethane rubber arch wire effectively moves teeth, especially posteriorly, with minimal risk of breakage, and is suitable for patients with metal allergies, offering a visually appealing solution.

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Abstract

We offer archwires that provide traction for tooth movement, especially posterior movement, are suitable for those with metal allergies, are less prone to breakage than wires, are less likely to deform permanently, and are aesthetically inconspicuous as they closely resemble the color of teeth. [Solution] Because the polyurethane rubber archwire itself is elastic, it exerts traction force to move teeth, especially posteriorly. Polyurethane rubber archwires can also be used by patients with metal allergies. The rubber is transparent or close to white in color, making it aesthetically inconspicuous.

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Description

Technical Field

[0001] In the multi-bracket orthodontic treatment method, metal arch wires made of stainless steel, nickel-titanium, etc. have been used so far. Instead of this wire, a polyurethane rubber arch wire is developed.

Background Art

[0002] There have been metal arch wires so far, but there has been no polyurethane rubber arch wire.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

Means for Solving the Problems

Claims

[Claim 1] Until now, multi-bracket orthodontic treatment has used metal archwires made of stainless steel or nickel-titanium. These wires themselves lack elasticity and tensile strength, requiring other traction devices. Polyurethane rubber archwires, however, possess elasticity and tensile strength, allowing them to exert traction force to move teeth, especially posteriorly, without the need for other traction devices. This reduces discomfort in the patient's mouth and simplifies the treatment procedure. Furthermore, considering its use for patients with metal allergies and the fact that the rubber is transparent or nearly white, making it aesthetically inconspicuous, we devised a polyurethane rubber archwire. ▲1▼Shape: A polyurethane rubber arch wire with a circular shape at one end and a straight end at the other. ▲2▼Device and materials used: The rubber wire is made of polyurethane rubber, a material currently used for other purposes in the oral cavity. ▲3▼Method of generating orthodontic force: A polyurethane rubber archwire with a circular tip is hooked onto a tube set on the first or second molar, and the opposite polyurethane rubber archwire with a straight tip is tied to the hook on the opposite tube. The tension and pulling force of the polyurethane rubber archwire are used to generate traction force that moves the teeth, especially backward.