Orthodontic Bracket with Triangular Cross Section

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Solution Overview

Problem

Conventional orthodontic brackets with rectangular cross sections protrude too far above the tooth, causing irritation to the inner lip surfaces, leading to reduced wearing comfort and discomfort during talking and food intake.

Innovation Solution

Designing orthodontic brackets with a semi-circular or shallow triangular cross section to minimize irritation, featuring a base body with a recess for the archwire and a snap-on nose for secure locking, made from tooth-colored synthetic materials to reduce friction and discomfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If orthodontic brackets have a rectangular cross section, then they provide structural strength and ease of manufacture, but they protrude too far above the tooth surface causing irritation to the inner lip surfaces

Engineering Contradiction:
Improvemucous membrane irritationVSAvoidbracket structural strength
Core Design Contradiction:
Object-affected harmful factorsVSStrength

Solution Approach 1:

The bracket cross-section is changed from a rectangular shape with sharp edges to a semi-circular or shallow triangular shape with curved surfaces. This curvature eliminates the protruding edges that cause irritation to the inner lip and mucous membrane, while maintaining sufficient structural strength through the optimized curved geometry.

Inventive Principle:
Principle #14Spheroidality (Curvature)

2Ease of operation

If orthodontic brackets have a rectangular cross section, then they are easy to manufacture, but they cause reduced wearing comfort and discomfort during talking and food intake

Engineering Contradiction:
Improvewearing comfortVSAvoidbracket manufacturing complexity
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The bracket is designed with a semi-circular or shallow triangular cross-section that follows the natural curvature of the tooth surface. This curved geometry significantly improves wearing comfort by eliminating sharp edges that interfere with talking and food intake, while remaining manufacturable through standard molding or machining processes.

Inventive Principle:
Principle #14Spheroidality (Curvature)

3Object-affected harmful factors

If orthodontic brackets have a reduced profile, then they minimize irritation and improve comfort, but they may reduce the space available for archwire engagement

Engineering Contradiction:
Improveinner lip irritationVSAvoidarchwire engagement capability
Core Design Contradiction:
Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The bracket design implements local quality by having a reduced overall profile height to minimize irritation, while concentrating the functional engagement features (recesses, slots, or openings for archwire attachment) at specific locations where they are most effective. This allows the bracket to maintain adequate archwire engagement capability despite the reduced overall size.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS8807995B2Tooth top part
Publication Date: 2014.08.19 WORLD CLASS TECHNOLOGY CORP
  • US8807995B2 patent drawing
  • US8807995B2 patent drawing
  • US8807995B2 patent drawing

AI summary

The invention relates to a tooth top part for a tooth correction means (1), with a base body (2) at which a tooth support surface (5, 25, 45) is formed for being fixed at a tooth surface (3) by bonding, and which is provided with a guide recess (12, 32, 52) which is formed for receiving a connecting means (4, 24, 44) for coupling neighboring tooth top parts (2, 22, 42) and which passes through the base body (2) in spaced relationship to the tooth support surface (5) along a guiding axis (17). According to the invention, the base body (2) comprises a substantially triangular or circular section shaped cross section (11, 11a, 31, 51) in a cross sectional plane (10) normal to the guiding axis (17).