Interchangeable Orthodontic Bracket Covers for Friction Reduction

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Solution Overview

Problem

Current orthodontic bracket systems using steel or elastomeric ligatures face issues such as frictional forces that increase treatment time, patient discomfort, and hygiene problems due to trapped food debris, and require frequent adjustments and replacements, leading to extended treatment durations and increased costs.

Innovation Solution

A customizable orthodontic bracket assembly comprising a bracket base and interchangeable bracket covers of varying widths, inner wall angles, and optional projections to adjust archwire flexibility and pressure, eliminating the need for ligatures and allowing for efficient tooth alignment without friction, easy cleaning, and reduced treatment time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If steel or elastomeric ligatures are used to secure archwire in bracket slots, then the archwire is retained in position, but frictional forces increase during tooth movement

Engineering Contradiction:
Improvearchwire retentionVSAvoidfrictional force
Core Design Contradiction:
ReliabilityVSForce

Solution Approach 1:

The bracket is divided into two functional parts: a base member that remains attached to the tooth and provides structural support, and a removable cover member that secures the archwire. This segmentation allows the cover to be optimized for low-friction archwire retention while the base provides stable attachment, resolving the contradiction between reliable retention and minimal friction.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The cover member is designed to be removable and replaceable, allowing dynamic adjustment of the archwire securing mechanism. This enables clinicians to change covers based on treatment stage requirements, optimizing the balance between archwire retention and friction reduction at different phases of orthodontic treatment.

Inventive Principle:
Principle #15Dynamics

2Reliability

If ligatures are used to hold archwire in bracket slots, then archwire position is maintained, but treatment time is extended due to friction

Engineering Contradiction:
Improvearchwire positioningVSAvoidtreatment duration
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

By separating the bracket into a permanent base and a removable cover, the system eliminates the need for traditional ligatures that create friction. The cover's design allows archwire positioning without the resistive forces of elastic or steel ligatures, thereby reducing treatment time while maintaining reliable archwire positioning.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention extracts and eliminates the ligature component entirely, replacing it with a integrated cover mechanism that secures the archwire through its structural design rather than through friction-based ligatures. This removal of the friction-causing element directly addresses the treatment time extension problem.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If elastic ligatures are used to secure archwire, then archwire is retained, but hygiene is compromised due to trapped food debris

Engineering Contradiction:
Improvearchwire retentionVSAvoidfood debris accumulation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The removable cover design creates a more open bracket structure compared to traditional ligatures. The cover can be easily removed for cleaning, allowing thorough access to the bracket slot and surrounding areas to eliminate food debris accumulation, while still providing reliable archwire retention when in place.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

By removing the elastic ligature material that creates crevices and trapped spaces, the invention eliminates the primary site for food debris accumulation. The cover-based retention system provides a cleaner, more hygienic bracket structure that is easier to maintain.

Inventive Principle:
Principle #2Taking out (Extraction)

4Loss of time

If self-ligating mechanisms are used in brackets, then ligature replacement is eliminated, but device complexity and cost increase

Engineering Contradiction:
Improveligature replacement timeVSAvoidbracket mechanism complexity
Core Design Contradiction:
Loss of timeVSDevice complexity

Solution Approach 1:

The bracket is segmented into a simple base member and a removable cover member, avoiding complex self-ligating mechanisms while achieving similar benefits. The cover can be quickly removed and replaced without requiring complex mechanical components, thus reducing device complexity while still eliminating the need for frequent ligature replacements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention extracts and eliminates complex self-ligating mechanisms, gates, and springs found in traditional self-ligating brackets. Instead, it uses a simpler removable cover design that achieves the goal of reducing replacement frequency without the added complexity and cost of sophisticated self-ligating systems.

Inventive Principle:
Principle #2Taking out (Extraction)

5Manufacturing precision

If custom bracket widths and angles are used for different treatment stages, then treatment precision is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvebracket customization precisionVSAvoidbracket production complexity
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The bracket system is segmented into a standardized base member and interchangeable cover members with varying widths and angles. This allows customization of the cover while keeping the base production simple and standardized, thus improving treatment precision without significantly increasing overall manufacturing complexity. The modular approach enables efficient production through standardization of common components.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A single standardized base member design serves multiple treatment stages by combining with different cover members. This universal base design simplifies manufacturing while the interchangeable covers provide the necessary customization for different treatment requirements, effectively separating the standardized and customized aspects of bracket production.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11744680B2Dalman orthodontic bracket
Publication Date: 2023.09.05 EL BOKLE DALIA
  • US11744680B2 patent drawing
  • US11744680B2 patent drawing
  • US11744680B2 patent drawing

AI summary

An orthodontic bracket assembly treatment system comprising a bracket base and at least two rigid selectable bracket covers slidably engageable with the bracket base wherein the selectable at least two rigid selectable bracket covers are removably slidably couplable to said bracket base by slidably engaging the upper lip with the upper retention element and the lower lip with the lower retention element and wherein the width of the face of a first one of the at least two rigid selectable bracket covers is wider than the width of the face of a second one of the at least two rigid bracket covers and can be selectively releasably attached to the base during a treatment such that the treatment utilizes either the first bracket cover or the second bracket cover depending on a patient's treatment needs at a stage of the treatment.