Surgical Template for Jaw Bone Defect Adaptation
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Solution Overview
Problem
Current methods fail to ensure precise placement and fixation of bone superstructures and dental prostheses in jaw bone defects, leading to inaccuracies in implant positioning and bone adaptation for optimal prosthetic placement.
Innovation Solution
A template with a positioning member and guide surface is created using digital models of the jaw, allowing for accurate placement of bone superstructures and drilling of implant sites, and enabling controlled removal of bone parts to achieve a desired shape for prosthetic support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used for placing implants and mounting dental prostheses, then multiple separate steps are required, but the number of steps cannot be minimized and placement accuracy is insufficient
Solution Approach 1:
The patent combines multiple separate steps (implant placement, bone superstructure placement, and prosthesis mounting) into a single integrated template-guided procedure. The template simultaneously guides implant insertion, ensures accurate bone superstructure positioning, and pre-establishes prosthesis alignment, thereby minimizing the number of steps while maintaining high placement accuracy through unified planning and execution.
2Manufacturing precision
If a template is used for drilling bore holes in planned positions, then implant placement accuracy is improved, but the template cannot ensure accurate placement of bone superstructures with connection elements
Solution Approach 1:
The patent applies preliminary action by pre-planning the positions of both implants and bone superstructures with connection elements in the digital model before surgery. The template is manufactured with pre-defined guide surfaces and positioning features that correspond to these pre-planned locations, ensuring that when the template is applied during surgery, both implants and bone superstructures are placed in their predetermined accurate positions in a single procedure.
3Ease of manufacture
If digital three-dimensional imaging and CADCAM methods are used, then bone superstructure manufacturing is improved, but accurate placement and fixation in the jaw remains impossible
Solution Approach 1:
The patent introduces the template as an intermediary device that bridges the digital planning stage and the physical surgical execution. The template translates the virtual bone superstructure design and implant placement plan into physical guidance during surgery, providing mechanical constraints and positioning features that ensure the actual placement matches the digital model, thereby achieving high placement precision for both implants and bone superstructures.
Data Source
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AI summary
The invention concerns a method for manufacturing a template (6), whereby a digital or physical model of the shape of at least a part of the jaw (1) is generated. A desired shape for the jaw bone (2) for positioning a bone superstructure (25) is compared to said model and a bone part (5) of the jaw bone (2) is identified, which bone part (5) is to be removed in order to approach said desired shape. A guide surface (8) is provided on the template (6) to guide a milling element (10) in order to remove the identified bone part (5). The invention also concerns a bone superstructure (25).