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Removable dental appliance with gingival ridges

A dental appliance and removal technology, used in dentistry, dental prostheses, instruments, etc., to solve problems such as insufficient tooth movement

Active Publication Date: 2021-06-22
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, orthodontic treatment may require some tooth movements that are difficult to achieve with CTA, such as root movement and rotation of canines and bicuspids
In these cases, the forces and moments that the CTA is able to apply directly to the tooth surface may not be sufficient to achieve the desired tooth movement

Method used

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  • Removable dental appliance with gingival ridges
  • Removable dental appliance with gingival ridges
  • Removable dental appliance with gingival ridges

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0115] Trials were performed to evaluate the effectiveness of the ridge and compare performance to dental attachments. Figure 8A and Figure 8B An experimental setup 900 is shown for measuring the force applied by a removable dental appliance to the root of a model first bicuspid tooth. A removable dental appliance 902 is formed that includes a gingival ridge formed in the appliance body at the housing of the left first bicuspid and a ridge for receiving bonded to the right first bicuspid. Dimples for tooth attachments. The removable dental appliance 902 is thermoformed from 0.75 mm thick Duran PET-G thermoplastic material. Three-dimensional models of the right first bicuspid 904A (including attachments) and the left first bicuspid 904B (collectively referred to as the tooth models 904 ) were 3D printed and placed into respective housings of the removable dental appliance 902 . The removable dental appliance 902 is clamped to the corner brackets at the corresponding later...

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Abstract

The present invention discloses an example removable dental appliance which includes an appliance body configured to at least partially surround a plurality of teeth of a dental arch of a patient. The appliance body includes a shell shaped to engage a tooth in an initial position and a gingival ridge extending from a mesial interproximal region along a gingival edge of the shell to a distal interproximal region. The gingival ridge is configured to engage a lingual or labial surface of the tooth below a height of contour of the tooth to enable the appliance body to apply a force vector at a contact point on the tooth to cause movement of the tooth toward a desired position of the tooth when the removable dental appliance is worn by the patient.

Description

technical field [0001] The present disclosure relates to polymer-based removable dental appliances such as appliances. Background technique [0002] The field of orthodontics involves repositioning a patient's teeth for improved function and aesthetic appearance. Orthodontic devices and treatment methods generally involve applying force to move teeth into a proper occlusal configuration or bite. As one example, orthodontic treatment may involve the use of slotted appliances called brackets, which are secured to a patient's front teeth, canines, and bicuspids. An archwire can be placed in the slot of each bracket and used as a track to guide the movement of the teeth into the desired orientation. The ends of the archwire are received in fixtures called buccal tubes that are secured to the patient's molars. Such dental appliances remain in the patient's mouth and are periodically adjusted by the orthodontist until proper alignment is achieved. [0003] Orthodontic treatmen...

Claims

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Application Information

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IPC IPC(8): A61C7/08
CPCA61C7/00A61C7/08A61C7/002A61C9/0046B33Y80/00G16H10/60G16H30/00G16H50/50A61C2007/004
Inventor 迈克尔·K·多姆罗伊塞小戴维·K·齐纳德理查德·E·拉比詹姆士·D·哈森
Owner 3M INNOVATIVE PROPERTIES CO