Dental Impression Connecting Part for Drilling Template Alignment
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Solution Overview
Problem
Existing methods for producing drilling templates for dental implants are complex and prone to errors due to the limited degree of freedom in conventional CAD/CAM machines, often requiring elaborate laboratory or central production processes.
Innovation Solution
A dental impression made from radiolucent or insulating material with a connecting part that allows for precise placement of a drill guide, enabling the use of conventional machines with limited degrees of freedom for producing drilling templates, and a method for correlating implant sites with 3-D measurement datasets using radiopaque positioning aids visible in X-ray or MRI images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional CAD/CAM machines with limited degrees of freedom are used to produce drilling templates, then manufacturing simplicity is improved, but manufacturing precision deteriorates due to restricted flexibility in creating complex template geometries
Solution Approach 1:
The drilling template is divided into two separate components: a positioning element with connecting part that is produced using conventional CAD/CAM machines, and a drilling guide element that is produced separately. These segments are then connected to form the complete template, allowing each component to be manufactured with appropriate precision using suitable methods while maintaining overall manufacturing simplicity
Solution Approach 2:
The connecting part acts as an intermediary element that bridges the positioning element and drilling guide element. This connecting part with its specific geometry enables precise alignment and connection between components, allowing conventional machines to produce simple positioning elements while achieving complex overall template geometry through the intermediary connecting structure
2Manufacturing precision
If elaborate laboratory or central production processes are used, then drilling template precision is improved, but production time and complexity increase
Solution Approach 1:
The positioning element with its connecting part is prepared in advance using conventional CAD/CAM machines. This preliminary production of the positioning element allows for precise location determination before the actual drilling guide element is attached, enabling rapid assembly and reducing overall production time while maintaining precision
Solution Approach 2:
By segmenting the template into pre-producible positioning elements and drilling guide elements, the invention allows parallel production of components using conventional machines, then rapid assembly, thereby improving productivity without sacrificing the precision achieved through separate specialized manufacturing of each component
Data Source
AI summary
A dental impression that includes an underside and a connecting part. The underside has a negative form of at least one partial area of a jaw and at least one implant site located in the partial area of the jaw. The connecting part is a recess arranged on an upper surface of the dental impression opposite the underside in the area of the negative form of the implant site, and has a longitudinal axis defined along a depth direction of the recess. The recess has a geometry that is rotationally asymmetric about the longitudinal axis, and an external contour of the connecting part is asymmetrical in a plane perpendicular to the longitudinal axis of the connecting part. The connecting part has a lowered base as a depth stop, the lowered base being within the recess and below the upper surface of the dental impression.