Surgical Template with End-Stroke Guide for Palatal Implants
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Solution Overview
Problem
Current computer-aided surgical implantology methods for dental and orthodontic implants are prone to inaccuracies, require multiple patient sessions for imaging, and do not adequately consider the palatal vault's varying bone thickness, leading to potential anatomical structure violations and reliance on surgeon skill for implant placement.
Innovation Solution
A surgical template with a palatal portion replicating the patient's palate, featuring cylindrical guides with axial passages and end-stroke means for precise angular and depth control, along with optically transparent materials for enhanced visibility and easy removal, ensures accurate implant positioning and minimizes invasiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional scanning and tomography methods are used for implant site design, then imaging data can be acquired, but the procedure requires multiple patient sessions and is subject to acquisition errors
Solution Approach 1:
The patent combines multiple imaging functions into a single intraoral scanner that captures both soft tissue surface geometry and bone structure in one scanning session, eliminating the need for separate CT scans and multiple patient appointments while maintaining measurement precision
Solution Approach 2:
The system creates a digital 3D copy of the patient's oral cavity including bone structure through intraoral scanning, replacing the need for physical casts and multiple imaging sessions, allowing virtual implant planning to be performed on the digital model
2Ease of operation
If conventional templates are used for implant placement, then implant positioning can be guided, but the maximum depth stroke cannot be predefined and relies on surgeon skill
Solution Approach 1:
The guide template is pre-designed with guide holes that have predetermined maximum depth strokes based on the patient's specific bone anatomy measured during scanning, so the depth limitation is built into the template before the surgical procedure, eliminating reliance on surgeon skill for depth control
Solution Approach 2:
Each guide hole in the template has a customized depth stroke tailored to the local bone thickness at that specific implant site, allowing different depth limitations for different locations based on individual patient anatomy rather than using a uniform depth for all implants
3Device complexity
If implant design is based only on template computer models, then the design process can be simplified, but the varying bone thickness of the palatal vault is not adequately considered
Solution Approach 1:
The system performs preliminary scanning of the patient's palatal vault bone structure and creates a digital 3D model with accurate bone thickness information before implant design, allowing the implant positions and depths to be planned based on actual anatomical data rather than generic templates
Solution Approach 2:
The guide template is customized with specific implant hole positions and depths that match the local bone thickness variations in the patient's palatal vault, ensuring each implant site is optimized for the specific anatomical conditions at that location
4Ease of manufacture
If complex design steps are used to create guide holes, then the template can be manufactured, but the process is laborious and susceptible to errors
Solution Approach 1:
The guide hole positions, diameters, and depth strokes are all predetermined in the digital 3D model of the patient's oral cavity before template manufacturing, allowing the physical template to be directly fabricated using additive manufacturing without requiring complex post-processing or manual modification steps
Solution Approach 2:
The patent replaces complex mechanical design and manual fabrication processes with computer-aided design and additive manufacturing (3D printing), which can directly manufacture the customized guide template with precise guide holes based on digital models, significantly reducing design time and eliminating manual modification errors
Data Source
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AI summary
A surgical template (1) for dental and/or orthodontic implants, in particular palatal implants, manufactured according to a method as claimed in one or more of the preceding claims, comprising a palate portion (2) reproducing the shape of the palate of a patient, at least one substantially cylindrical guide (5) provided in said palate portion (2) and having an axial passage (6) with an inlet section (7) and an outlet section (8) for the insertion of a corresponding implant in the palate of the patient with predetermined inclination and deepness, wherein said at least one guide (5) has end-stroke means (11) adapted to define an axial abutment for the implant (9) at the insertion thereof into said passage (6) for adjusting the insertion deepness.