Openwork Metal Denture with Multi-Layer Ceramic Coating

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Solution Overview

Problem

Current dental prosthetics methods lack improved mechanical and cosmetic characteristics, weight reduction, minimal shrinkage, and post-correction for both single tooth and multiple teeth permanent bridge dentures, with existing methods being inefficient for multiple teeth restorations and compromising aesthetic and structural integrity.

Innovation Solution

A dental prosthetic device featuring a metal or glass-ceramic openwork frame with a multi-layered ceramic coating and an anchor-keyed mechanism, which includes a wax reproduction process to minimize metal shrinkage and enhance ceramic adhesion, resulting in a lightweight, strong, and aesthetically pleasing denture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If conventional metal-ceramic denture methods are used, then structural strength is achieved, but weight reduction is insufficient and shrinkage occurs

Engineering Contradiction:

Improvedenture weightVSAvoidshrinkage control

Core Design Contradiction:

Weight of moving objectVSManufacturing precision

Solution Approach 1:

The patent changes the material parameters by using metal alloys with low shrinkage characteristics and adjusting the ceramic layer thickness and composition to minimize thermal expansion differences, thereby reducing overall denture shrinkage and improving manufacturing precision

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs composite construction combining metal framework with ceramic veneers, where the metal provides structural strength with minimal shrinkage while the ceramic layers provide aesthetic properties, achieving both weight reduction and precision through material composition

Inventive Principle:

Principle #40Composite materials

2Strength

If conventional ceramic coating methods are used, then aesthetic appearance is achieved, but mechanical strength and adhesion are insufficient

Engineering Contradiction:

Improveceramic adhesionVSAvoidcoating process complexity

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The patent applies preliminary surface treatment to the metal framework before ceramic coating, including surface preparation and priming procedures, to ensure strong adhesion of subsequent ceramic layers, thereby improving mechanical strength while maintaining manufacturability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent optimizes coating parameters such as ceramic layer thickness, composition ratios, and firing temperatures to achieve both strong adhesion and aesthetic appearance, balancing mechanical properties with ease of manufacture

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If single-layer ceramic coating is used, then manufacturing simplicity is maintained, but aesthetic effect is reduced

Engineering Contradiction:

Improvecoating process simplicityVSAvoidaesthetic appearance

Core Design Contradiction:

Ease of manufactureVSShape

Solution Approach 1:

The patent divides the ceramic coating into multiple layers with different functions - a base layer for adhesion and intermediate layers for aesthetic effects - allowing complex appearance to be achieved through segmented coating rather than a single complex layer

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent adds the dimension of multiple coating layers, where each layer contributes different aesthetic properties, transforming a single-layer simple coating into a multi-layered structure that provides enhanced visual effects while maintaining manufacturing feasibility

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Strength

If traditional denture designs are used, then structural integrity is maintained, but weight reduction and strength improvement are limited

Engineering Contradiction:

Improvemechanical strengthVSAvoiddenture weight

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The patent uses thin ceramic veneers that conform to the metal framework shape, providing sufficient mechanical strength and aesthetic appearance with minimal material thickness, thereby reducing overall denture weight while maintaining structural integrity

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

The patent combines metal and ceramic materials in a composite structure where the metal provides strength and the ceramic provides aesthetic properties, achieving superior mechanical strength with reduced weight compared to traditional single-material dentures

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS9055990B1Bayramov'S open framework denture and method for manufacturing the same

Publication Date: 2015.06.16 BAYRAMOV MERET

AI summary

A dental prosthetic device and a method for its fabrication are disclosed. The method is applicable for metalloceramics or metalloplastics permanent dentures based on a light metal openwork frame strengthened by multiple layers of ceramic or plastic custom coating.