Penetrable-Wall Dental Impression Tray for Implant Precision
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Solution Overview
Problem
Current impression tray techniques, especially the repositioning method, are error-prone and less precise, leading to unsatisfactory results due to imprecise impressions and significant movements in the impression material, increasing time and material costs, and posing health risks from silica dust production.
Innovation Solution
A ready-made, disposable or reusable impression tray with a concave tray body and penetrable walls allows for precise placement and removal of the impression post, reducing material and labor costs, and preventing impression material escape, while enabling precise pick-up technique handling and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a standardised impression tray with cover screw is used, then the procedure can be simplified and time reduced, but the precision of implant position reproduction deteriorates
Solution Approach 1:
The impression tray is divided into a standardised tray body and a separate, customisable cover element. The cover element can be selectively positioned to expose specific implant bodies, allowing the tray to maintain standardisation for time efficiency while enabling precise control over which implants are imprinted, thus resolving the contradiction between procedural simplicity and position reproduction precision.
Solution Approach 2:
Different regions of the impression tray have different functions: the tray body provides standardised support and positioning, while the cover element provides localised control over implant exposure. This local differentiation allows the tray to achieve both time efficiency through standardisation and precision through selective cover placement, addressing the technical contradiction.
2Measurement precision
If an individual impression tray is produced, then the precision of the impression improves, but the time and material costs increase
Solution Approach 1:
The impression tray system is segmented into a universal, pre-fabricated tray body and a customisable cover element. This segmentation allows the majority of the tray (the body) to be produced quickly and standardised, while only the cover element needs to be customised to match the specific implant configuration, significantly reducing overall production time and material costs compared to manufacturing entirely individual trays while maintaining high impression precision.
Solution Approach 2:
The tray body is designed as a universal component that can be used with multiple different implant configurations through the interchangeable cover elements. This multi-functionality allows a single tray body design to serve multiple patients and implant scenarios, reducing the need for completely individual trays and thereby decreasing production time and material expenses while preserving impression precision.
3Ease of operation
If the impression post is buried in the impression material, then the impression can be taken, but the removal of the impression post becomes difficult and time-consuming
Solution Approach 1:
The cover element is designed to be positioned beforehand to expose the implant bodies and impression posts before the impression material is applied. This preliminary exposure action ensures that the impression posts remain accessible and visible throughout the impression process, allowing for quick and easy removal after the material hardens, thus avoiding the time-consuming task of excavating buried posts while maintaining smooth impression taking.
4Ease of manufacture
If silica dust is produced during impression tray production, then the manufacturing process can proceed, but health risks arise for workers and patients
Solution Approach 1:
The impression tray is designed as a disposable or single-use component. This approach eliminates the need for extensive cleaning, sterilisation, and reuse cycles that generate silica dust during manufacturing and processing. By making the tray disposable, the health risks associated with silica dust production are eliminated, while the low cost and simplicity of the disposable design maintain ease of manufacture and patient safety.
Data Source
AI summary
Disclosed is an impression tray (1) with a concave tray body (2) for taking an impression of at least one jaw part, in which at least one implant body (12) is situated, which body has a receiving aperture into which an impression post (11) may be inserted, it being possible to fill the impression tray (1) with a free-flowing hardenable impression material (10) to produce a mold for a model of the jaw part, which when used reduces the time spent in the dentist's chair, increases the precision of an implant model and finally reduces the material and labor costs in that, at least in one portion, the tray body (2) has a wall (6, 6′) which can be penetrated by an impression post (11) inserted into the implant body (12) if the impression tray (1) is placed onto the jaw part.