Intraoral Scanning Using Scan Posts for Implant Positioning

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Solution Overview

Problem

Intraoral scanning data obtained by existing scanners is limited by cumulative errors, leading to inaccurate determination of scan post positions and poor scanning implantation accuracy.

Innovation Solution

A method and system for intraoral scanning that includes obtaining a positioning mode of scan posts, scanning the oral cavity to obtain target data, and processing this data to determine precise positioning information using auxiliary feature points and three-dimensional reconstruction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If multi-data stitching solution is used to expand scanning range, then scanning coverage is improved, but measurement precision deteriorates due to cumulative errors

Engineering Contradiction:

Improvescanning coverageVSAvoidscan post positioning accuracy

Core Design Contradiction:

Area of stationary objectVSMeasurement precision

Solution Approach 1:

The patent introduces scan posts as intermediary reference objects with known precise positions and identifiable feature points. These scan posts serve as mediators between the scanner and the oral cavity, providing stable reference markers that enable accurate multi-view data stitching without cumulative errors affecting scan post positioning.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the parameter of reference identification by using distinct visual feature points on scan posts instead of relying on continuous surface scanning. This parameter change from surface geometry to discrete feature point recognition eliminates cumulative errors in determining scan post positions during the stitching process.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If conventional intraoral scanning is used, then scanning speed is maintained, but manufacturing precision deteriorates due to inaccurate implant position determination

Engineering Contradiction:

Improvescanning speedVSAvoidimplant position accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent applies preliminary action by pre-positioning scan posts with known coordinates before scanning the oral cavity. This preliminary setup establishes accurate reference points that guide the scanning process, ensuring both high scanning speed and precise implant position determination without requiring post-processing corrections.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12433725B2Method and system for processing intraoral scanning, electronic device, and medium

Publication Date: 2025.10.07 SHINING 3D TECH CO LTD

AI summary

Embodiments of the present disclosure relate to a method and system for processing intraoral scanning, an electronic device, and a medium. The method includes: obtaining a positioning mode of a scan post in response to a request for scanning an oral cavity including scan posts, scanning the oral cavity to obtain target scanning data, and performing processing based on the positioning mode of the scan post and the target scanning data to determine positioning information of the scan posts.