Angled Screw Channel Block for Dental Implant Root Post Flanges
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Solution Overview
Problem
Existing dental implant root post flanges with pre-machined straight channels limit the ability to correct mispositioned implants, requiring cemented crowns to cover the flange, which complicates extraction and necessitates two separate structures, whereas correctly positioned implants allow for direct aesthetic material placement.
Innovation Solution
A block with a blind vertical channel section that allows for the machining of an angled screw channel between 0° and 40°, enabling flexible screw insertion and removal, facilitating direct placement of aesthetic material on the root post flange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a pre-machined straight channel is used for screw insertion, then manufacturing precision is improved, but adaptability deteriorates because the channel cannot be angled to correct mispositioned implants
Solution Approach 1:
The screw channel is divided into two separate segments: a vertical blind channel section (pre-machined for precision) and an angled through-channel section (machined afterward to correct implant mispositioning). This segmentation allows each segment to serve a specific function - the vertical section ensures precise screw head seating while the angled section provides adaptability to correct implant positioning errors.
Solution Approach 2:
The vertical blind channel section is pre-machined in the block before the root post flange is fabricated. This preliminary action establishes the precise location and depth for the screw head seat, ensuring manufacturing precision. The angled through-channel is then machined afterward to connect the aesthetic surface to the pre-positioned vertical channel, allowing correction of implant mispositioning.
2Shape
If a cemented crown is used to cover the root post flange, then aesthetics are improved, but device complexity increases due to requiring two separate structures and complicating extraction
Solution Approach 1:
The root post flange and the aesthetic crown are merged into a single integrated structure. The vertical blind channel section is incorporated directly into the root post flange body, eliminating the need for a separate cemented crown to cover the screw access channel. This unified structure simplifies the overall device while maintaining aesthetic appearance and facilitating easier extraction.
3Ease of operation
If the screw channel hole is placed in an aesthetic area, then functionality is improved for screw access, but aesthetics deteriorate
Solution Approach 1:
The screw access channel is moved from a horizontal/aesthetic dimension to a vertical/dorsal dimension. The vertical blind channel section extends upward from the implant connection through the root post flange body, allowing the screw access hole to be positioned on the dorsal surface (away from aesthetic view) while maintaining ease of screw insertion and removal operations.
Data Source
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AI summary
The invention relates to a block for producing personalised root post flanges for dental implantology and to a method for producing a personalised root post flange for dental implantology, of the type that can be screwed onto a previously osseointegrated implant, normally in an incorrect position, and over which aesthetic material can be directly placed, providing the dental part with shape and colour, without having to apply a dental crown over the root post flange. Said block is characterised in that it has a structure that allows the selection of the mouth angle required for the channel used for the insertion of the screw for fixing to the implant.