Browse Prior Art Database

In Office Orthodontic Custom Wire Bending with 3D Printed Dies

IP.com Disclosure Number: IPCOM000243825D
Publication Date: 2015-Oct-19
Document File: 3 page(s) / 267K

Publishing Venue

The IP.com Prior Art Database

Abstract

As 3D printers and intraoral scanners are gaining popularity and affordability there is a high probability that they will become common equipment in an orthodontist office to make intraoral models and custom appliances This publication describes the use of digital information to create dies in the office with 3D printing techniques for bending appliance wires to the desired shapes This approach is applicable for both labial and lingual wires where the orthodontist scans the current position of teeth and adjusts or forecasts movement in a software application Shapes of the wire are determined to enable movement of the teeth to various positions Then 3D printed dies based upon the determination crimp the wire and bend it to the desired shape

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 50% of the total text.

Page 01 of 3

In-Office Orthodontic Custom Wire Bending with 3D Printed Dies Abstract

As 3D printers and intraoral scanners are gaining popularity and affordability, there is a high probability that they will become common equipment in an orthodontist office to make intraoral models and custom appliances. This publication describes the use of digital information to create dies in the office with 3D printing techniques for bending appliance wires to the desired shapes. This approach is applicable for both labial and lingual wires where the orthodontist scans the current position of teeth and adjusts or forecasts movement in a software application. Shapes of the wire are determined to enable movement of the teeth to various positions. Then, 3D printed dies, based upon the determination, crimp the wire and bend it to the desired shape.

Introduction

Currently, many orthodontists manually place and bond brackets onto the teeth but the placement may not be accurate for the final desired outcome. During the course of the treatment, an orthodontist may have to de-bond the bracket and reposition the appliance with new brackets. Since this could be time consuming for adhesive cleanup and re- bonding, some orthodontists resort to bending the wire to move the teeth to the desired position. Generally, an orthodontist uses a crimping tool to bend the wire based on their past experience along with some guess work. It is a trial and error process and the result is seen only in the next appointment. Repeated attempts to bend the wire prolongs the treatment time. Moreover a novice orthodontist may not be comfortable in bending wires.

To remove estimated guesswork, some companies [1] offer services where scanned patient information and the final desired teeth position are received from an orthodontist. This information is then input into an automatic system that robotically bends the wire. The completed wire is then delivered to the orthodontist. Usually, there is a significant fee associated with this service and orthodontists have to wait to obtain the wire.

Implementation

This publication describes an approach to custom 3D print die inserts in an orthodontist office environment that may be used in a simple pressing apparatus to bend the wire to achieve a desired shape. The steps include and are represented in Figure 1:

Figure 1: Generate Custom 3D Printed Die Inserts Workflow

An orthodontist uses an intraoral scanner to determine the current position of the teeth, placement of the appliance (i.e., brackets), and the bracket geometry.

Scan(s) of the current placement and geometry of the teeth and appliances are uploaded into modeling software made available to the orthodontist. The orthodontist moves the teeth to the final position through the software interface. A smart algorithm built into the software may guide the orthodontist to the final teeth position permitting finer adjustments.

The orthodontist submits a final desired teeth position and a wire shape...