Digital Partial Prosthesis Production System

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The production of partial prostheses is time-consuming and error-prone due to the complexity of materials and work steps involved in conventional methods, which require multiple models and manual handling, leading to inefficiencies and transfer errors.

Innovation Solution

A digital production system that includes a user interface for designing a prosthesis framework with coupling elements, a production device for automatic production of the framework, base, and teeth using additive and/or subtractive processes, and a positioning system with positive-locking elements for precise assembly, allowing for model-free and efficient production.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional production methods with multiple models and manual handling are used, then customization and precision fitting are achieved, but production time increases and error rates increase

Engineering Contradiction:
Improveprecision fittingVSAvoidproduction time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent uses digital 3D scanning to create accurate virtual copies of the patient's oral anatomy and uses CAD software to design the prosthesis framework digitally, eliminating the need for multiple physical models while maintaining precision

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent replaces manual mechanical modeling and fitting processes with computer-aided design and manufacturing systems, including automated framework production that reduces both time and human error

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of manufacture

If multiple models and manual work steps are used, then comprehensive design control is maintained, but device complexity and error probability increase

Engineering Contradiction:
Improvedesign controlVSAvoidprocess complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent merges multiple separate design and production steps into an integrated digital workflow where scanning, design, and manufacturing are coordinated through software, reducing process complexity while maintaining design control

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The software system automatically performs framework design and production based on scanned data, reducing manual intervention and complexity while maintaining comprehensive design control through digital parameters

Inventive Principle:
Principle #25Self-service

3Adaptability or versatility

If conventional wax modeling and transfer procedures are used, then material flexibility is achieved, but production accuracy decreases due to transfer errors

Engineering Contradiction:
Improvematerial flexibilityVSAvoidproduction accuracy
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent creates a digital copy of the prosthesis framework through CAD design based on 3D scans, eliminating physical model transfer and its associated errors while maintaining design flexibility through software modification

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent transitions from physical material properties (wax) to digital parameters in CAD software, allowing flexible modification of framework geometry without physical model transfer and associated accuracy losses

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20240299142A1Method for digitally producing partial prostheses
Publication Date: 2024.09.12 IVOCLAR VIVADENT AG
  • US20240299142A1 patent drawing
  • US20240299142A1 patent drawing
  • US20240299142A1 patent drawing

AI summary

A production system (100) for producing partial prostheses (101), with a user interface (103) for digitally designing a prosthesis framework (105) with coupling elements (119) to the residual tooth hard tissue, a prosthesis base (107) and prosthesis teeth (109).