Dental Prosthetic Connection Compensation Using 3D Scan Feedback

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Solution Overview

Problem

In dental technology, manufacturing inaccuracies during the production of dental prosthetic assemblies can lead to deviations in the mechanical connection between components, resulting in issues such as blocking, misalignment, or loose fits, which compromise the assembly's precision and functionality.

Innovation Solution

A method involving the use of 3D digital models and scan data to determine deviations in the mechanical connection between dental prosthetic assembly components. This method includes acquiring scan data of manufactured physical copies, creating 3D digital scan models, and modifying the original templates to compensate for deviations, ensuring a precise mechanical connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If rapid prototyping techniques are used to manufacture dental prosthetic assemblies, then manufacturing efficiency is improved, but manufacturing precision deteriorates due to manufacturing inaccuracies causing deviations in mechanical connections

Engineering Contradiction:

Improvemanufacturing efficiencyVSAvoidprecision of mechanical connection

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent performs preliminary actions by acquiring scan data of manufactured components, creating digital scan models, and determining deviations before final assembly. This allows deviations to be identified and compensated in advance by modifying digital templates, preventing connection issues before they occur during assembly.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback by using scan data from manufactured components to determine actual deviations, then using this information to modify digital templates for compensation. This closed-loop approach ensures that manufacturing inaccuracies are detected and corrected based on actual measured deviations.

Inventive Principle:

Principle #23Feedback

2Productivity

If deviations in mechanical connection are not compensated, then manufacturing process is simpler and faster, but fitting criteria are violated resulting in blocking, misalignment, or loose fits

Engineering Contradiction:

Improvemanufacturing speedVSAvoidfitting criteria satisfaction

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent replaces mechanical trial-and-error fitting with a digital compensation system. Instead of physically adjusting components to achieve proper fit, the system uses digital scan models to determine deviations and automatically modifies digital templates to compensate, substituting mechanical adjustment with computational correction.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes geometric parameters of digital templates based on determined deviations. By modifying template parameters to compensate for manufacturing inaccuracies, the system ensures that components meet fitting criteria without requiring physical rework or assembly adjustments.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12285305B2Compensating deviations using a full manufacturing result

Publication Date: 2025.04.29 EXOCAD

AI summary

The invention relates to a method for manufacturing a dental prosthetic assembly. The dental prosthetic assembly comprises a first and a second element. The first element comprises a first connection portion with a reception configured to establish a mechanical connection between the first and the second element by receiving a protrusion of a second connection portion comprised by the second element.