Pivoting Dental Extraction Device for Posterior Teeth
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Solution Overview
Problem
Current tooth extraction techniques, such as the Socket Shield method, are challenging for dentists to perform and traumatic for patients due to their complexity and potential for tissue damage, and they often result in bone and gum resorption, especially when used for posterior teeth, where access is limited and root morphology is complicated.
Innovation Solution
A device comprising a lead screw with a threaded point and shaft, a pivoting member, and a platform that allows the screw to pivot relative to the platform, enabling secure engagement and retraction from the tooth root without applying bending moments, thereby reducing trauma and improving access, especially for posterior teeth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the Socket Shield technique is used to preserve buccal bone and gum, then bone preservation is improved, but the procedure becomes more complex and traumatic with increased risk of tissue damage
Solution Approach 1:
The extraction device is divided into separate functional modules: a cutting device for sectioning the root, a retention device for securing the buccal root segment, and an extraction device for removing the apical portion. This segmentation allows each component to perform its specific function independently, reducing overall procedural complexity while maintaining bone preservation benefits.
Solution Approach 2:
The buccal root segment is cut and retained in position before the apical portion is extracted. This preliminary action preserves the buccal bone and gum structure in advance, preventing resorption while simplifying the subsequent extraction process and reducing trauma to the patient.
2Productivity
If traditional extraction devices are used, then extraction is achieved, but bending moments cause screw breakage or root breakage
Solution Approach 1:
A pivoting member is introduced as an intermediary between the extraction device and the tooth root. This pivoting member allows the extraction force to be applied perpendicular to the root axis rather than at angled positions, eliminating bending moments on the screw and preventing root breakage while maintaining extraction efficiency.
Solution Approach 2:
The extraction device incorporates a pivoting mechanism that dynamically adjusts the angle of force application. This dynamic design ensures that extraction forces are always applied optimally perpendicular to the root axis, preventing screw breakage and root fracture while maintaining high extraction efficiency.
3Stability of the object's composition
If the Socket Shield technique is applied to posterior teeth, then bone preservation is achieved, but access and geometry control become more difficult
Solution Approach 1:
The device segments the root extraction process into distinct stages: cutting the buccal root segment, retaining it in position, and then extracting the apical portion. This segmentation provides better access control and geometry management for posterior teeth while maintaining bone preservation benefits.
Solution Approach 2:
The buccal root segment is cut and positioned in advance before attempting to access the apical portion for extraction. This preliminary action establishes a stable reference point and improves access control for the subsequent extraction steps, making the procedure more manageable for posterior teeth.
4Stability of the object's composition
If de-proteinized bovine bone is added to the socket, then resorption is reduced, but the procedure becomes more complex and time-consuming
Solution Approach 1:
The device uses the patient's own tooth root structure, specifically the buccal root segment, as a natural shield to prevent resorption. This self-service approach eliminates the need for additional bone grafting materials and procedures, reducing both procedural complexity and time while maintaining effective resorption prevention.
Solution Approach 2:
Instead of adding external bone grafts to prevent resorption, the technique extracts and removes the apical portion of the root while retaining the buccal root segment as a natural shield. This extraction approach simplifies the procedure by eliminating the need for separate bone grafting steps while achieving the same resorption prevention goal.
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
The device facilitates safer and more efficient tooth root detachment with reduced risk of screw breakage and tissue damage, minimizing alveolar resorption and patient discomfort, and allows for quicker recovery times by providing a stable platform for precise control during the procedure.
Implementation Method 1
a lead screw having a threaded point for screwing into the tooth root
Implementation Method 2
a pivoting member including a bore through which the lead screw passes, the lead screw being retractable through the bore by rotational engagement of a threaded member with the threaded shaft of the lead screw
Data Source
AI summary
A device for detaching a tooth root. The device comprises: a lead screw having a threaded point for screwing into the tooth root, and a threaded shaft; a pivoting member including a bore through which the lead screw passes, the lead screw being retractable through the bore by rotational engagement of a threaded member with the threaded shaft of the lead screw; and a platform for supporting the pivoting member such that the lead screw is able to pivot relative to the platform, The lead screw includes a locking surface for preventing rotation of the lead screw during rotational engagement of the threaded member with the threaded shaft.