3D Oral Cavity Model Margin Line Extraction

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Solution Overview

Problem

Existing methods for fabricating prostheses based on plaster models are inaccurate and time-consuming, and lack precise information about boundary surfaces between teeth and prostheses, leading to inefficiencies in the dental treatment process.

Innovation Solution

A method and device for processing three-dimensional oral cavity models to accurately represent margin line information by changing data attributes, allowing for the identification and management of margin lines across different software environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If plaster models are used for prosthesis fabrication, then traditional methods can be applied, but accuracy varies and the process takes long time with high costs

Engineering Contradiction:

Improveprosthesis fabrication accuracyVSAvoidtime from impression to prosthesis

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent replaces the mechanical plaster model fabrication process with an optical scanning system. An intraoral scanner captures three-dimensional images of the oral cavity, which are then processed computationally to generate digital models and margin line information, eliminating the need for physical impressions and plaster casts.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent creates a digital copy of the oral cavity through scanning, producing a three-dimensional digital model that replicates the physical oral structures. This digital copy includes margin line information that can be extracted and used for prosthesis design, replacing the need for physical plaster models.

Inventive Principle:

Principle #26Copying

2Productivity

If intraoral scanners are used to acquire oral cavity models, then cost and time decrease, but exact margin line information is insufficient for exquisite prosthesis fabrication

Engineering Contradiction:

Improvetreatment efficiencyVSAvoidmargin line information accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent extracts margin line information from the three-dimensional oral cavity model obtained through scanning. By processing the scanned data to specifically identify and extract margin line characteristics, the system provides the precise boundary information needed for prosthesis fabrication while maintaining the efficiency benefits of digital scanning.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent performs preliminary processing of the scanned oral cavity model to generate margin line information before prosthesis design begins. This advance preparation of boundary information ensures that exact margin details are available when needed for prosthesis fabrication, combining efficiency with precision.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If different programs are used for oral cavity modeling, then various treatment options can be explored, but margin line identification and management becomes difficult

Engineering Contradiction:

Improvesoftware compatibilityVSAvoidmargin line management

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent generates a standardized three-dimensional model with embedded margin line information that can be used across different software programs. By creating a universal data format that preserves margin line characteristics regardless of the scanning or design software used, the system enables seamless workflow integration while maintaining ease of margin line identification.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20240289955A1Method for providing margin line information about oral cavity, and electronic device for performing same

Publication Date: 2024.08.29 MEDIT CORP

AI summary

A method of processing a three-dimensional oral cavity model may include: obtaining a first three-dimensional oral cavity model generated by scanning an object; obtaining a margin line of the first three-dimensional oral cavity model; and obtaining a second three-dimensional oral cavity model in which the margin line is represented by changing an attribute of data corresponding to a position of the margin line obtained in the first three-dimensional oral cavity model.