Segmented Denture Base with Curable Adjusting Member

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Solution Overview

Problem

Existing methods for producing dentures using reference dentures are inefficient, requiring manual adjustments and grinding, which increases production time and may lead to inappropriate contacts with the mucosa, necessitating further adjustments.

Innovation Solution

A denture production method that includes a reference denture base member and an adjusting member formed from a cured curable denture base material, allowing for efficient adaptation to the oral cavity by separating the adaptation of the mucosal surface into central, anterior, and posterior regions, thereby reducing the need for grinding adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a reference denture is used to reduce manual operation, then productivity is improved, but manufacturing precision deteriorates due to the need for grinding adjustments

Engineering Contradiction:

Improvedenture production efficiencyVSAvoidfitting precision to oral cavity

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The denture base is divided into a reference denture base member (pre-formed standard shape) and an adjusting member (custom-adapted portion). This segmentation allows the majority of the denture to be produced efficiently from the reference component while only the necessary adapting portions require custom fabrication, thereby maintaining high productivity while improving fitting precision.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The reference denture base member is prepared in advance with a standard shape that approximates the target oral cavity form. This preliminary preparation reduces the amount of subsequent adjustment needed, allowing rapid production while maintaining precision through minimal grinding and forming operations.

Inventive Principle:

Principle #10Preliminary action

2Manufacturing precision

If manual grinding adjustments are performed to improve fitting precision, then manufacturing precision is improved, but productivity deteriorates due to increased production time

Engineering Contradiction:

Improvefitting precision to oral cavityVSAvoiddenture production efficiency

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

By separating the denture into a pre-formed reference base member and a separate adjusting member, the invention minimizes the portion requiring manual grinding. The adjusting member is designed to be formed by adapting curable material to the reference base, reducing overall production time while achieving precise fit.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention changes the state of the adjusting member material from uncured (moldable) to cured (fixed shape) after adaptation. This parameter change allows the adjusting member to be easily formed to match the oral cavity without extensive grinding, improving both precision and productivity.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If a single reference denture base member is used, then device complexity is reduced, but adaptability deteriorates due to inability to accommodate individual variations

Engineering Contradiction:

Improvedenture structure simplicityVSAvoidadaptation to individual oral cavity

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The denture base is segmented into a standardized reference portion and a customizable adjusting portion. This allows the majority of the structure to remain simple and standardized while providing localized adaptability through the adjusting member that conforms to individual patient variations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The reference denture base member provides uniform quality and standardization for the majority of the denture structure, while the adjusting member provides localized customization where individual adaptation is needed. This local differentiation maintains overall simplicity while enabling individual adaptability.

Inventive Principle:

Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method enables the production of dentures with higher total efficiency, reducing the occurrence of cases requiring grinding adjustments and maintaining a good fit to the individual patient's oral cavity.

Implementation Method 1

an adjusting member formed of a cured body of a curable denture base material

Methodology Applied

Scientific EffectPolymerization: Photopolymerisation

Data Source

PatentUS12232913B2Denture, reference denture, and denture manufacturing method

Publication Date: 2025.02.25 TOKUYAMA DENTAL CORP

AI summary

A denture including a denture base where artificial teeth are fixed, the denture base includes a reference denture base member to which the artificial teeth are fixed and an adjusting member formed of a cured body of a curable denture base material, the adjusting member being joined to the reference denture base member, the adjusting member includes an anterior adjusting member that is joined to a mucosal surface of a base anterior region to form an anterior region together with the base anterior region, and a posterior adjusting member that is joined to a mucosal surface of a base posterior region to form a posterior region together with the base posterior region, and at least parts of base edge side distal end regions in the anterior region and the posterior region are formed of the anterior adjusting member and the posterior adjusting member, respectively.