3D Intraoral Model Mesh Processing for Natural Gingiva-Palate Interfaces

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Solution Overview

Problem

Existing methods for generating three-dimensional intraoral models fail to accurately represent the natural tooth structure, particularly at the gingiva-palate interface, leading to inaccuracies in tooth models used for dental treatments.

Innovation Solution

A method and apparatus that process three-dimensional intraoral models by generating a mesh between the gingiva area and a base border using an auxiliary line, specifically at the palate position, to create a more natural tooth model.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a mesh is generated between the gingiva area and the base border using conventional methods, then the tooth model can be generated, but the representation at the gingiva-palate interface is inaccurate and unnatural

Engineering Contradiction:

Improveaccuracy of tooth model representationVSAvoidnaturalness of gingiva-palate interface

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

An auxiliary line is introduced as an intermediary element at the palate position to mediate the mesh generation process. This auxiliary line serves as a reference that guides the creation of more natural auxiliary points, thereby improving the accuracy and naturalness of the gingiva-palate interface representation without requiring complex manual intervention throughout the entire model.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If manual adjustment is performed to improve the natural tooth structure representation, then the accuracy of the tooth model improves, but the processing time and complexity increase

Engineering Contradiction:

Improveaccuracy of tooth structure representationVSAvoidprocessing time for model generation

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The auxiliary line is pre-generated at the palate position before the main mesh generation process. This preliminary action establishes a reference framework that guides subsequent automatic mesh generation, eliminating the need for time-consuming manual adjustments while ensuring accurate representation of the gingiva-palate interface.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The auxiliary line acts as a mediator that translates the complex requirement for natural tooth structure representation into a simple geometric reference. This intermediary element enables automatic algorithms to generate accurate meshes without requiring manual intervention, thus reducing processing time while maintaining high precision.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250278829A1Method and device for processing three-dimensional oral cavity model

Publication Date: 2025.09.04 MEDIT CORP

AI summary

Provided are a method and apparatus for processing a three-dimensional intraoral model. The method of processing a three-dimensional intraoral model includes obtaining scan data by scanning an object, generating a border of a base based on the scan data, obtaining a gingiva area from the scan data, and obtaining tooth model data by generating a mesh between the gingiva area and the border of the base and connecting the gingiva area and the border of the base by using the mesh, another mesh different from the mesh being generated at a position corresponding to a palate.