Portable Robotic Intraoral Abutment Preparation Device
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Solution Overview
Problem
Current dental procedures for preparing abutment teeth for prosthetic restorations are hindered by the subjective factors of dentist skill and experience, leading to inaccuracies, excessive grinding, and prolonged processes due to the need for imprinting and multiple laboratory visits, resulting in suboptimal results and material failures.
Innovation Solution
A portable robotic device with a turbine head and stepper motors for precise intraoral preparation, using a milling guide with a movable bur controlled by software for virtual designs, and featuring emergency stops and cooling irrigation, eliminates the need for imprinting and reduces human error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional manual preparation methods are used, then the dentist can adapt to various clinical situations, but the skill and experience of the dentist introduce subjectivity and inaccuracies
Solution Approach 1:
The patent replaces the manual mechanical operation system with an automated robotic system. The robotic device uses a turbine head mounted on a movable carriage that travels along a rail attached to a splint, eliminating manual skill dependency while maintaining precision through computer-controlled movement and guidance.
Solution Approach 2:
The patent creates a digital copy of the oral cavity through intraoral scanning, producing a 3D model that serves as a template for the robotic preparation. This digital model guides the entire preparation process, ensuring accuracy without relying on the dentist's manual measurement and judgment skills.
2Productivity
If traditional imprinting methods are used, then the process can be performed with simple equipment, but it requires multiple laboratory visits and prolonged processing time
Solution Approach 1:
The patent performs all necessary measurements, imaging, and virtual planning actions before the actual preparation begins. The intraoral scan creates a digital model that is used to design the entire preparation protocol in advance, allowing the robotic device to execute the pre-planned path without requiring multiple visits for adjustments or additional imaging.
Solution Approach 2:
The patent combines multiple functions into a single integrated system: the splint serves as both a guiding structure for the robotic carriage and a mounting platform for the turbine head. The digital model integrates imaging, measurement, and surgical planning functions, eliminating the need for separate imprinting procedures and multiple laboratory visits.
3Manufacturing precision
If manual preparation is performed, then the dentist can make real-time adjustments, but this leads to excessive grinding and suboptimal results
Solution Approach 1:
The patent incorporates real-time feedback through the movable carriage system that travels along a rail guided by the splint. The carriage position is continuously monitored and controlled by the computer system, which adjusts the turbine head movement based on pre-programmed paths derived from the digital model, preventing excessive material removal while maintaining precision.
Solution Approach 2:
The patent uses a dynamic positioning system where the turbine head is mounted on a movable carriage that can be precisely positioned and controlled during the procedure. The carriage moves along a rail that is itself positioned on the splint, creating a multi-level dynamic system that adapts to the specific tooth geometry while maintaining consistent precision and controlling material removal.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances accuracy and efficiency by minimizing subjective factors, reducing the number of visits, and ensuring precise abutment preparation, thereby improving the quality and longevity of prosthetic works by eliminating irregularities and material issues.
Implementation Method 1
a burr (F) mounted in the turbine head (3)
Implementation Method 2
feeding means (12) with sterile physiological serum, with cooling role, arranged in the turbine head (3)
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention relates to a portable device for robotic intraoral preparation of abutment teeth. The device, according to invention, comprises a handle (11) provided at the top with a stepper motor (7, 9, 14) for each of the X, Y and Z axes, so that it is possible moving a turbine head (3) along guide rails (5, 6, 10) on each of the X, Y and Z axes, wherein the device comprises a fixing rail (2) mounted at one of the ends in the handle (11) of the device, and at the free end provided with a rectangular frame (4), the fixing rail (2) extending to the lower part and parallel to the arm of the turbine head (3), so that the bur (F) mounted in the turbine head (3) is movably controlled inside the frame (4) of the fixing rail (2), and in which the frame (4) is mounted by means of fixing screws (16) in threaded bushes (15), in correspondence with an opening (L) of a milling guide (G), which is fixed in advance on the teeth by retentivity and intraosseous by means of pins (17).