Dental Separator Ring Geometry for Anterior Restoration Access

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Solution Overview

Problem

Existing dental instruments and products are designed primarily for posterior teeth restoration and fail to effectively address the unique shapes, sizes, and contours of anterior teeth, leading to excess resin material and inadequate restoration quality, while existing separator rings impede dental access and are difficult to control.

Innovation Solution

Development of specialized dental wedges and matrix bands tailored for both anterior and posterior teeth, along with improved dental separator rings that enhance positioning and visibility during restoration procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If existing dental instruments designed for posterior teeth are used on anterior teeth, then the restoration procedure can be performed, but excess resin material occurs and restoration quality is inadequate

Engineering Contradiction:
Improverestoration qualityVSAvoidinstrument adaptability to different tooth types
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The invention divides the dental instrument market into specialized segments: anterior-specific instruments, posterior-specific instruments, and universal instruments. Each segment is optimized for the specific geometric characteristics (contact point shapes, tooth sizes, contours) of its target tooth type, eliminating the compromise of using generic instruments.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The instruments are designed with local quality adaptations where the wedge shape, matrix band curvature, and separator ring geometry are specifically tailored to match the local anatomical features of anterior or posterior teeth, ensuring optimal resin containment and contact point formation for each tooth region.

Inventive Principle:
Principle #3Local quality

2Ease of operation

If existing separator rings are used, then tooth separation is achieved, but dental access is impeded and control is difficult

Engineering Contradiction:
Improvedental access and controlVSAvoidtooth separation effectiveness
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The separator rings are designed with self-retaining features including engagement hooks that latch onto the tooth structure and memory metal properties that provide automatic spring-back force, allowing the separator to maintain its positioning and separation function without requiring continuous manual control or adjustment by the dentist.

Inventive Principle:
Principle #25Self-service

3Productivity

If posterior-specific wedges and matrix bands are used on anterior teeth, then the procedure can be completed, but finishing time increases due to excess resin material

Engineering Contradiction:
Improverestoration completion speedVSAvoidfinishing time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The anterior-specific wedges and matrix bands are designed with pre-configured geometries that proactively prevent excess resin material from entering the interproximal space during restoration placement. The tapered wedge shape and contoured matrix band create a sealed environment that directs resin flow, eliminating the need for time-consuming removal and finishing of excess material.

Inventive Principle:
Principle #9Preliminary anti-action

Data Source

PatentUS12582503B2Dental wedges, matrix bands, and dental separator rings for use in direct composite restoration techniques
Publication Date: 2026.03.24 BURTON DENTAL INNOVATIONS LLC
  • US12582503B2 patent drawing
  • US12582503B2 patent drawing
  • US12582503B2 patent drawing

AI summary

A dental separator ring for use in a dental restoration procedure in a mouth of a patient. The dental separator ring includes a first arm, a second arm, a central portion coupled to both the first arm and the second arm, a first pad coupled to the first arm, the first pad adapted to be positioned on a lingual side of adjacent teeth in the mouth of the patient, and a second pad coupled to the second arm, the second pad adapted to be positioned on a buccal side of the adjacent teeth in the mouth of the patient. The first pad has a first profile and the second pad has a second profile different from the first profile.