Integrated Artificial Tooth Abutment for Accurate Crown Processing

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Solution Overview

Problem

Conventional artificial tooth manufacturing methods require sequential processes that are time-consuming and prone to inaccuracies due to manual coupling of workpiece structures to abutments, leading to prolonged procedure times and reduced positional accuracy.

Innovation Solution

An artificial tooth design integrating an abutment with a prosthesis, allowing direct coupling to a processing device and fixture, utilizing an adapter with the same internal structure as the fixture, enabling precise tooth-shaped crown processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional sequential processes are used to manufacture artificial teeth, then each step can be performed independently, but manufacturing time is prolonged and positional accuracy deteriorates

Engineering Contradiction:

Improvemanufacturing efficiencyVSAvoidcoupling position accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The workpiece structure is merged with the abutment into a single integrated component. The abutment is directly coupled to the fixture while the workpiece structure is simultaneously processed, eliminating the need for separate coupling operations and reducing both manufacturing time and positional errors

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The abutment is pre-coupled to the fixture before the workpiece structure is attached. This preliminary positioning ensures accurate alignment is established early in the process, and subsequent processing maintains this accuracy without requiring manual repositioning

Inventive Principle:

Principle #10Preliminary action

2Ease of operation

If manual coupling is used to attach the workpiece structure to the abutment, then flexibility is maintained, but coupling position accuracy is low and rework is required

Engineering Contradiction:

Improvecoupling operation flexibilityVSAvoidabutment coupling position accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

Manual mechanical coupling operations are replaced with a fixed structural integration where the abutment is permanently attached to the fixture. This eliminates manual positioning errors while maintaining operational simplicity through the standardized integrated design

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If the workpiece structure is processed separately from the abutment, then each component can be optimized independently, but processing time increases

Engineering Contradiction:

Improvecomponent optimization flexibilityVSAvoidmanufacturing procedure time

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The workpiece structure and abutment are combined into a single integrated unit that is processed together. This allows both components to be manufactured in one continuous operation rather than separately, significantly reducing total processing time while maintaining design optimization through integrated modeling

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP4186463B1Artificial tooth and manufacturing method therefor

Publication Date: 2026.04.08 HAAS CO LTD

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AI summary

Proposed is an artificial tooth which includes a prosthesis and an abutment including an insertion part inserted into the prosthesis in one direction and a protruding part protruding from the prosthesis, wherein the insertion part is slantingly formed so that the diameter of the outer peripheral surface of the insertion part increases in the one direction, and the protruding part is slantingly formed so that the diameter of the outer peripheral surface of the protruding part decreases in the one direction, and when the prosthesis is a workpiece structure, one end portion of the protruding part is coupled to an artificial tooth processing device.