Dental Guide Jig for Precise Implant Cavity Formation
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Solution Overview
Problem
Current methods for forming implant cavities in dental implantation are either inaccurate without stents, require costly equipment with stents, or are time-consuming due to difficulties in visual inspection and depth adjustment, especially when proximity to nerves or sinuses is a concern.
Innovation Solution
A guide jig with a pole section and guide section that allows for visual adjustment of the cutting burr's position and depth, eliminating the need for stents and sophisticated equipment by providing a stable and accurate means to form implant cavities without deepening beyond the target depth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a stent is created on a patient's tooth form model to position the implant cavity, then the position accuracy is improved, but the surgical time is extended and the patient's burden is increased due to the need for depth adjustment and fine tuning
Solution Approach 1:
The guide jig is pre-formed with an integrated stopper at a predetermined distance from the guide hole, establishing the cutting depth limit before the surgical procedure begins. This preliminary setup eliminates the need for intraoperative depth adjustment and fine-tuning, directly reducing surgical time while maintaining position accuracy.
Solution Approach 2:
The guide jig automatically regulates cutting depth through its built-in stopper mechanism that contacts the handpiece when the predetermined depth is reached. This self-regulating feature eliminates the need for manual depth adjustment by the surgeon, reducing surgical time and complexity while ensuring consistent positioning accuracy.
2Manufacturing precision
If a stent is used with guide holes formed using CT scan images, then the position, direction and depth accuracy are improved, but the installation cost is increased due to the requirement of CT imaging equipment
Solution Approach 1:
The guide jig is designed as a simple, disposable plastic instrument that can be manufactured at low cost without requiring expensive CT imaging equipment. The guide jig achieves sufficient positioning accuracy through its mechanically precise guide hole and stopper, eliminating the need for costly digital imaging systems while maintaining adequate manufacturing precision for implant cavity formation.
Solution Approach 2:
The guide jig replicates the essential positioning function of complex stent systems by using a simple rigid structure with a precisely formed guide hole and stopper. This simplified copy achieves the necessary accuracy for implant cavity formation without requiring the sophisticated CT imaging and digital planning infrastructure.
3Ease of manufacture
If no stent is used and cutting is done based on visual check, then the cost is reduced, but the implant cavity may not be formed appropriately because bleeding or the like may make it difficult to visually inspect whether the tip of the cutting burr contacts an appropriate position
Solution Approach 1:
The guide jig serves as an intermediary tool that provides a fixed reference frame with a precisely formed guide hole, directing the cutting burr along a predetermined path. This mechanical guide ensures accurate positioning without relying on visual inspection, eliminating the problem of bleeding obscuring the surgeon's view while keeping the procedure simple and low-cost.
Solution Approach 2:
The guide jig replaces visual inspection-based positioning with a mechanical guidance system. The rigid guide hole and stopper provide physical constraints that automatically ensure accurate cavity formation, substituting the unreliable visual method with a dependable mechanical system that maintains precision without increasing cost.
4Manufacturing precision
If the depth of the implant cavity is adjusted by mounting a stopper on the cutting burr with the stent removed, then the depth precision is improved, but the surgical time is extended due to the labor and time required for adjustment
Solution Approach 1:
The stopper is pre-mounted on the guide jig at the correct depth position before the surgical procedure begins. This preliminary preparation of the depth reference eliminates the need for intraoperative stopper mounting and depth adjustment, maintaining depth precision while significantly reducing the time required for depth setting during surgery.
Data Source
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Figure 3A~3C
Figure 4A~4D
AI summary
It is an object of the present invention to appropriately form an implant cavity without forming any stent and shorten a surgical time at a low cost. A guide jig (1) for guiding a cutting bar attached to a handpiece when forming an implant cavity at an implantation position of an implant is configured to include a handle section (11) formed of an elongated fashion, a pole section (12) that supports an end side of the handle section (11) and a guide section (13) that guides the cutting bar on the end side of the handle section (11). The pole section (12) is configured to protrude from the end side of the handle section (11) in a direction opposite to a direction of cutting by the cutting bar.