Standardized Dental Implant Guide Stent with Radiopaque Marker
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Solution Overview
Problem
Current dental implant surgery planning and guide stent manufacturing processes are time-consuming and prone to errors due to the need for external manufacturing and image distortion, leading to prolonged preparation times and potential misfitting of guide stents during surgery.
Innovation Solution
A standardized guide stent system that includes a preguide device with a radiopaque marker, which is scanned using a CT scanner and matched with a preguide library for precise implant placement planning, allowing for on-site machining of the guide stent using a milling machine, eliminating the need for external manufacturing and reducing preparation time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a guide stent is manufactured by external companies using patient-specific oral images, then the guide stent can be customized to fit the patient's oral structure, but the preparation time for surgery is prolonged (2-3 days)
Solution Approach 1:
The patent applies preliminary action by pre-manufacturing standardized guide stent bodies before patient-specific customization is needed. The standardized guide stent bodies are produced in advance with precise dimensions and materials, then quickly adapted to individual patients using oral scans and 3D printing technology, significantly reducing the preparation time from 2-3 days to a much shorter period while maintaining customization benefits
Solution Approach 2:
The patent segments the guide stent manufacturing process into two parts: a standardized pre-manufactured body and a patient-specific customized portion. The standardized body contains common structural elements that can be mass-produced, while only the patient-specific portions (such as the oral cavity fitting portion) require customization through 3D printing, thereby reducing overall manufacturing time while preserving fit accuracy
2Manufacturing precision
If oral scans are performed to obtain three-dimensional external shape images, then the guide stent can be customized to match the oral structure, but image distortion occurs due to the scanning process inside the oral cavity
Solution Approach 1:
The patent uses an intermediary approach by introducing standardized guide stent bodies as a reference medium between the oral scan process and the final customized guide stent. The standardized bodies provide a stable geometric reference that helps correct and compensate for distortions in the oral scan images, enabling accurate customization without being directly affected by the image distortion issues
Solution Approach 2:
The patent applies parameter changes by transforming the distorted oral scan images into corrected three-dimensional models through computational processing. The system adjusts geometric parameters and spatial relationships in the scanned images to compensate for distortion, then uses these corrected parameters to guide the 3D printing of patient-specific guide stent portions that accurately fit the oral structure
3Loss of time
If 3D printing is used to manufacture the guide stent at the dental clinic, then the preparation time is reduced, but the guide stent is made of soft material requiring additional metal members and mounting errors may occur
Solution Approach 1:
The patent applies composite materials by combining 3D-printed patient-specific portions with standardized guide stent bodies made of more rigid materials. The 3D-printed portions provide customization and fit, while the standardized bodies provide structural stability and mounting precision, creating a composite guide stent that achieves both quick preparation and reliable mounting without requiring additional metal members
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly shortens the preparation time for dental implant surgery by enabling quick and accurate production of a guide stent that fits precisely within the oral cavity, enhancing surgical efficiency and reducing errors.
Implementation Method 1
a preguide device which includes a marker made of a radiopaque material or a radiation semipermeable material
Data Source
AI summary
Disclosed herein is a method of supporting implant surgery in a server, which includes obtaining a subject's oral CT image scanned with a guide model inserted into an oral cavity of the subject, the guide model being manufactured to a certain standard to group human teeth in any range so that the teeth belong to at least one group and to cover a tooth position of a corresponding group, the guide model including a marker made of a radiopaque or radiation semipermeable material, loading a library as information about the standard of the guide model, identifying the marker in the oral CT image, and generating a library matching CT image by matching the oral CT image with the library based on the marker included in the library and the marker identified in the oral CT image, and planning implant surgery of the subject using the library matching CT image.